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Financial market crises prediction by
   multifractal and wavelet analysis.


          Russian Plekhanov Academy of Economics


   Romanov V.P., Bachinin Y.G., Moskovoy I.N., Badrina M.V.

             Tel.: +79036169431, 8(495)9582410, Fax: (495)9982395;
Address: 36 Stremyanny lane, Moscow, 117997;
e-mail: Romanov.vp@rea.ru, victorromanov1@gmail.com
The aim of the research
   It is well known, that financial markets are essentially non-
    linear systems and financial time series are fractals.
   That’s why prediction of crash situations at finance market
    is a very difficult task. It doesn’t allow us to use effectively
    such well-known methods as ARIMA or MACD in view of
    their sluggishness.
    Multifractal and wavelets analysis methods are providing
    more deep insight into the nature of phenomena.
    Multiagent simulation makes it possible to explicate
    dynamic properties of the system.
   The main aim is to find out the predictors or some kind of predicting
    signals which may warn as about forthcoming crisis
a) Changing of ruble/dollar exchange   b) American Index Dow Jones
rate at period 01.08.1997-01.11.1999   Industrial at “Black Monday” 1987
(Default in Russia)                    at period 17.10.1986-31.12.1987
с) Dow Jones Industrial                                              d) RTSI
         Index                                               07.10.1999 -06.10.2008
 07.10.1999 -06.10.2008




                          e) Nasdaq 07.10.1999 -06.10.2008
Indexes DJI, RTS.RS, NASDAQ,
                     S&P 500 falling at crisis period




               1 month                              3 months                               6 months
 September 15,2008 – October 17, 2008    July 17,2008 – October 17, 2008       April 17,2008 – October 17, 2008

The collapse in the stock markets       Investors fear that the attempt to    When Asian stock indices
the analysts linked to the negative     improve the situation by pouring      collapsed to a minimum for
external background. U.S. indexes       in amount of $ 700 billion, which     more     than    three    years.
have completed a week 29.09 -           involves buying from banks            The negative news had left the
6.10 falling, despite the fact that     illiquid assets will not be able to   Russian market no choice – its
the U.S. Congress approved a plan       improve the situation in credit       began to decline rapidly.
to rescue the economy.                  markets and prevent a decline in
                                        the economy.
   Efficient Market Hypothesis (EMH) asserts, that financial markets are
    "informationally efficient", or that prices on traded assets, e.g., stocks, bonds,
    or property, already reflect all known information. The efficient-market
    hypothesis states that it is impossible to consistently outperform the market by
    using any information that the market already knows, except through luck.
    Information or news in the EMH is defined as anything that may affect prices
    that is unknowable in the present and thus appears randomly in the future.

   Capital Asset Pricing Model (CAPM) is used to determine a theoretically
    appropriate required rate of return of an asset, if that asset is to be added to
    an already well-diversified portfolio, given that asset's non-diversifiable risk.
    The model takes into account the asset's sensitivity to non-diversifiable risk
    (also known as systemic risk or market risk), often represented by the quantity
    beta (β) in the financial industry, as well as the expected return of the market
    and the expected return of a theoretical risk-free asset.

   Arbitrage pricing theory (APT), in finance, is a general theory of asset
    pricing, that has become influential in the pricing of stocks. APT holds that the
    expected return of a financial asset can be modeled as a linear function of
    various macro-economic factors or theoretical market indices, where
    sensitivity to changes in each factor is represented by a factor-specific beta
    coefficient.
Efficient Market Hypothesis
         versus Fractal Market Hypothesis
    Efficient market hypothesys               Fractral market hypothesys
                (EMH)                                   (FMH)

   Assumption of normal                 Prices shows leptoexcess effect for
    distribution of prices                prices probability distribution(“fat
    increments                            tails”)
   The weak form EMH from a             The prices plot looks similary for
    purely random distribution of         the period of time in the day, week,
    prices has been criticized            month (fractal pattern)
   Semi-strong form of EMH, in          Reducing the reliability of
    which all available information       predictions with the increase of its
    is reflected in the prices used       period
    by professionals                     Prices shows short-term and long-
   Changing prices in the long           term correlation and trends (the
    run does not show the                 effect of feedback)
    presence of «memory»
                                         Chaotic activity of the market
Fractal definition
 Fractals          –The term fractal was coined in 1975 by Benoît
Mandelbrot, from the Latin fractus, meaning "broken" or "fractured".
(colloquial) a shape that is recursively constructed or self-
similar, that is, a shape that appears similar at all scales of
magnification.
(mathematics) a geometric object that has a Hausdorff dimension
greater than its topological dimension.

 The second feature that characterizes fractals is the fractional
dimension.


The word fractal came from fractional values – partial
values, which may take the fractal dimension of objects

Fractals may cause the application of Iterative Functions System

 The image, which is the only fixed point of IFS is called attractor
Chaos and dynamics of fractal market

                      Market prices tend to level the
                       natural balance within the price
                       range
                      These levels or ranges can be
                       described as «attractors»
                      However, the data within those
                       ranges remain casual
Attractors types
Point attractors
   •     The simplest form of the attractor. In theory, compatible
         with the balance of supply and demand in the economy
         or the market equilibrium.


Limit cycle attractors
       • Represent market volatility on balance, or "market noise"




Strange or fractal attractors

       • Displays Multiple varying the amplitude fluctuation, which
       are contained within the set limit cycle attractor, called
       «phase space».
Serpinsky Triangle
Fractals examples
Another fractals examples
Fractal attractors and
  financial markets
              Stocks and futures - classic
               examples of securities. Profit
               from buying and selling
               comparable with fluctuations in
               the pendulum
              Each bearer security or futures
               contract are located in its own
               phase space
              Long-term forecasting is
               heavily dependent on accurate
               measurement of initial
               conditions of the market
Fractals on capital market
               Financial markets describes a
                nonlinear function of active
                traders
               Traditional methods of technical
                analysis based on linear
                equations and Euclidean
                geometry are inadequate
               Market jumps growth and
                recession are nonlinear
               Technical analysis methods are
                poor indicators of the relationship
                trend and trading decisions
               Fractals can describe the
                phenomena that are not
                described in Euclidean geometry
Multifractal

Stochastic process {x(t)} is called Multifractal, if it has fixed increments and
satisfies the condition

                                                          τ(q) 1
          E(| xt+ Δt xt | ) = c(q)( Δt )
                                ,
                                 q


when c(q) – predictor, E- operator of mathematical
expectation, q Q , t B – intervals on the real axis.

Scaling function (q) taking into account the impact of time on points q.
Definiting the Fractal Dimension Index
   Fractal dimension indedx (FDI):                      ln( N A (1 / n))
                                                d    lim
                                                     n       ln(n)
  NS(1/2n)–the number of blocks with a length of hand
1/2n, which necessary, to cover S – Serpinsky triangle.
                              ln(3n )   ln(3)
                     ds   lim                 1,58
                          n   ln(2n )   ln(2)

   Где NA (1/n) – the number of blocks with length of hand, equal
    1/n, which necessary to cover variety А.
    Фрактальное
    Множество
    А
Fractal Dimension Index

   Defines the persistence or antipersistence of
    market. Persistent market weakly fluctuated
    around the market trend
   antipersistent market shows considerable volatility
    on the trend
   antipersistent market is more rugged pricing
    schedule and more frequently show a change
    trends
Crisis prediction technique

   Because our goal is the prediction of crises, we
    are trying to first find out the best indicator, using
    methodology Multifractal and wavelet analysis.



   Then we test various types of pre-processing the
    original time series to find the best indicator.
Hurst exponent
xt        ln z t   1       ln z t , t     1,..., T
                                                        Depending on the value of Heurst
              t                                         exponent the properties of the
                                          1             process are distinguished as follows:
x(t , )             xu      x , x                   x
             u 1                              t 1       When H = 0.5, there is a process of
                                                        random walks, which confirms the
                                                        hypothesis EMH.
R( )        max x(t , ) min x(t , )
              t 1                   t 1
                                                        When H > 0.5, the process has long-
                                                        term memory and is persistent, that
                       1                            2   is it has a positive correlation for
S( )                              xu       x            different time scales.
                           u 1
                                                        When H < 0.5, time-series is anti-
                                                        persistent with average switching
                    log R ( )                           from time to time.
                                        S( )
H                             log
Time series partitioning
   Time series: {xt}; t   [0, T].

   Compute: Z={zt}, zt= lnxt+1-lnxt; t   [0,T];

   Divide interval [0, T] into N subintervals, 1 ≤ N ≤ Nmax.

   Each subinterval contains int (T/N)=A values Z;

   For each subinterval K; 1 ≤ K ≤ N current reading number lK;1 ≤ lK ≤ A;
    t = (K-1) А+ lK

   As soon as we are looking for the best indicator of a coming default, we
    will use several variants of a preliminary processing.
Time series preprocessing
   1. The original time series itself: Z={zt};

   2. Preprocessed time series Z1={ Z K }, K=1,2,…N,
                             A
                         1
                 ZK                   z0l
        where            Al       1
                                            K
                              K
                                                                           
                                                         Z0 K   1 A lK
                                                                           ZK
   3. Preprocessed time series                     Z2
                                                                 SK
                  1 A                          2
    where S K            Z 0l K        ZK
                  A lK 1

                                                                         
   4. Preprocessed time series Z3={ Z0 K 1 A l                   K
                                                                         Z K}
Partition functions
For each preprocessed time series compute partition function for
                  different N and q values :
                                  N
              0
                  N   ( Z , q)          | Z 0 ( KA ) (T ) Z 0 ( K   1) A
                                                                         |q
                                  K 1


                                   N                
               1
                   N ( Z , q)             | Z K (T ) Z K      1 |q
                                  K 1

                                   N
              2
                   N ( Z , q)             | Z 2 ( KA ) Z 2( K       1) A   |q
                                  K 1

                                      N
              3
                   N   ( Z , q)           | Z 3 ( KA )   Z 3(K      1) A   |q
                                   K 1
Scaling functions
                 0
           log       N   ( Z , q) log A log N
 0
 N
     (q)
                                log A

                 1
           log       N   ( Z , q) log A log N
 1
 N
     (q)
                               log A

                 2
           log       N   ( Z , q) log A log N
 2
 N
     (q)
                               log A


                 3
           log       N   ( Z , q) log A log N
 3
 N
     (q)
                               log A
Fractal dimension spectrum
                 estimation
1. Lipshitz – Hoelder exponent estimation:
:
     d i                              i
i            ( i (q) i (q 1)) / q            (q)/ q
     dq
                                                      when, i = 1, 2, 3, 4.


2. Fractal dimension spectrum estimation by Legendre
     transform
    fI ( )    arg min [q            i   (q)]      (arg min [q   i   (q)   i   (q)])
                     q                                   q
Fractal dimension spectrum
        width as crash indicator
        Multifractal may be composed of two or infinite
    number of monofractals with continuous varying α
    values. Width of α spectrum may be estimated as
    difference between maximum and minimum values of α:
                       Δ = max - min ,

       By carrying out Legendre transform we are trying
    using our program by estimating Δ to find differences in
    its values before and after crash.

   Roughly speaking f( ) gives us number of time
    moments, for which degree of polynomial, needed for
    approximation f( ) equals (according to Lipshitz
    condition).
Scaling functions




Changes in currency for the   Non-linear scaling function
  Russian default of 1998      (q) (Multifractal process)
Screenshots assessment of
Multifractal spectrum of singularity




Assesment of multifractal    Assesment of multifractal
spectrum of singularity at   spectrum of singularity at
 period 09.07.96-21.07.98     period 18.11.96-30.11.98
Scaling functions




Dow Jones Industrial Index, pre-   Non-linear scaling-function (q)
       crisis situation              (multifractal process)
    19.12.2006-06.10.2008
Scaling functions




     RTSI index,        Non-linear scaling-function (q)
 pre-crisis situation
                          (multifractal process)
19.12.2006-06.10.2008
Scaling functions




 linear scaling-function (q)     Assesment of multifractal
(monofractal process)          spectrum of singularity RTSI at
                                period 16.05.2000 -30.05.2002
Screenshots assesment of
 Multifractal spectrum of singularity




  Assesment of multifractal        Assesment of multifractal
spectrum of singularity DJI at   spectrum of singularity RTSI at
period 19.12.2006-08.10.2008      period 16.12.2003-10.01.2006
"Needles" that determine the expansion of Multifractal
   spectrum on an hourly schedule 5.2008-11.2008
Experimental results



                               American Dow Jones at the «Black
                                Monday» 1987 period 17.10.1986-
                                         31.12.1987




Schedule assessment of the width of the               Schedule assessment of the width of the
spectrum of fractal singularity (Δ(t)=αmax-αmin)      spectrum of fractal singularity (Δ(t)=αmax-αmin)
for different periods of time                         at the «Black Monday»
Graph of Multifractal spectrum singularity width assessment
                   (Δ(t)=αmax-αmin) at russian index RTSI at period
                                 07.10.1999-07.11.2008
       interval          Qmin Qma   N      ∆
                               x
        1-512
07.10.1999 –18.10.2001
                          -2   6    47    0,964
       151-662
16.05.2000 -30.05.2002
                          -2   6    103   0,495
       301-812
15.12.2000 -31.12.2002
                          -2   6    129   1,62
       451-962
25.07.2001 -11.08.2003
                          -2   5    31    0,81
       601-1112
28.02.2002 -17.03.2004
                          -2   6    170   1,77
       751-1262
03.10.2002 -19.10.2004
                          -2   6    129   2,17
      901- 1412
15.05.2003 -02.06.2005
                          -2   6    129   1,927
      1051-1562
16.12.2003 -10.01.2006
                          -2   5    43    0,952
      1201-1712
26.07.2004 -15.08.2006
                          -2   5    21    0,868
      1351-1862
04.03.2005 -26.03.2007
                          -2   5    22    0,89
      1501-2012
06.10.2005 -25.10.2007
                          -2   5    23    0,848
      1651-2162
19.05.2006 -07.06.2008
                          -2   5    40    0,927
      1801-2246
19.12.2006 -06.10.2008
                          -2   7    145   2,133
      1765-2277
25.09.2006 -07.11.2008
                          -2   7    161   2,177
Experimental results(RTSI)
                                    Over 4 years outstanding mortgage loans in Russia rose more
                                   than 16 times - from 3.6 billion rubles. in 2002 to 58.0 billion
                                rubles. in 2005. In quantitative terms - from 9,000 loans in 2002 to
                                                           78,603 in 2005.

                                                   Pre-crisis situation:
                                      July 2008 - the beginning of september 2008

                                 Graph of Multifractal spectrum singularity width
                                 assessment (Δ(t)=αmax-αmin) at russian index RTSI at
                                 period 07.10.1999-07.11.2008



Why mortgage evolving so rapidly? Many factors. This increase in real
incomes and the decline of distrust towards mortgage, as from potential
buyers, and from the sellers, and a general reduction in the average interest
rate for mortgage loans from 14 to 11% per annum, and the advent of
Moscow banks in the regions, and intensifying in the market of small and
medium-sized banks.
Graph of Multifractal spectrum singularity width assessment
            (Δ(t)=αmax-αmin) at Russian index RTSI at period
                          07.10.1999-09.12.2008

2.5




 2




1.5




 1




0.5




 0
      1   2   3   4   5   6   7   8   9   10   11   12   13   14   15   16
Graph of Multifractal spectrum singularity width assessment
      (Δ(t)=αmax-αmin) at american index Dow Jones Industrial at period
                            07.10.1999-07.11.2008
       interval          Qmin   Qmax   N      ∆
        1-512
07.10.1999 –18.10.2001
                          -2     5     164   1,84
       151-662
16.05.2000 -30.05.2002
                          -2     4      5    0,717
       301-812
15.12.2000 -31.12.2002
                          -2     5     134   1,77
       451-962
25.07.2001 -11.08.2003
                          -2     5     65    1,01
       601-1112
28.02.2002 -17.03.2004
                          -2     5     74    1,108
       751-1262
03.10.2002 -19.10.2004
                          -2     4     11    0,791
      901- 1412
15.05.2003 -02.06.2005
                          -2     4     38    0,803
      1051-1562
16.12.2003 -10.01.2006
                          -2     4     50    0,815
      1201-1712
26.07.2004 -15.08.2006
                          -2     4     53    0,884
      1351-1862
04.03.2005 -26.03.2007
                          -2     4     57    0,973
      1501-2012
06.10.2005 -25.10.2007
                          -2     4     29    0,864
      1651-2162
19.05.2006 -07.06.2008
                          -2     4     11    0,836
      1801-2263
19.12.2006 -06.10.2008
                          -2     5     151   2,324
      1765-2284
25.09.2006 -07.11.2008
                          -2     5     174   1,984
Experimental results(DJI)
                                         Graph of Multifractal spectrum singularity
                                         width assessment (Δ(t)=αmax-αmin) at american
                                         index Dow Jones Industrial at period
                                         07.10.1999-07.11.2008


                                         3 May, 1999, the index reached a value of
                                         11014.70. Its maximum - mark 11722.98 -
                                                     Dow-Jones index
                                               reached at 14 January 2000.

  There was a sharp drop in the index and 9 october 2002 DJIA reached an interim
  minimum with a value of 7286,27.
                   Pre-crisis situation:
      July 2008 - the beginning of september 2008

Dow Jones Industrial index of 15 september 2008, fell to 4.42 per cent to 10,917
points - is the largest of its fall in a single day since 9 october 2002, reported France
Presse. World stock markets experienced a sharp decline in major indexes in
connection with the bankruptcy Investbank Lehman Brothers.
Graph of Multifractal spectrum singularity width assessment
      (Δ(t)=αmax-αmin) at american index Dow Jones Industrial at period
                            07.10.1999-09.12.2008
 3




2.5




 2




1.5




 1




0.5




 0
Graph of Multifractal spectrum singularity width assessment
      (Δ(t)=αmax-αmin) at american index NASDAQ Composite at period
                            07.10.1999-07.11.2008
       interval          Qmi   Qmax   N      ∆
                          n
        1-512
07.10.1999 –18.10.2001
                         -2     6     47    0,91
       151-662
16.05.2000 -30.05.2002
                         -2     6     57    0,935
       301-812
15.12.2000 -31.12.2002
                         -2     6     86    1,092
       451-962
25.07.2001 -11.08.2003
                         -2     5     25    0,74
       601-1112
28.02.2002 -17.03.2004
                         -2     5     31    0,821
       751-1262
03.10.2002 -19.10.2004
                         -2     5     129   1,385
      901- 1412
15.05.2003 -02.06.2005
                         -2     4     9     0,726
      1051-1562
16.12.2003 -10.01.2006
                         -2     4     13    0,765
      1201-1712
26.07.2004 -15.08.2006
                         -2     4     19    0,78
      1351-1862
04.03.2005 -26.03.2007
                         -2     4     19    0,792
      1501-2012
06.10.2005 -25.10.2007
                         -2     4     15    0,778
      1651-2162
19.05.2006 -07.06.2008
                         -2     4     5     0,772
      1801-2263
19.12.2006 -06.10.2008
                         -2     5     77    1,185
      1765-2284
25.09.2006 -07.11.2008
                         -2     6     207   1,067
Experimental results(NASDAQ)
                                               Graph of Multifractal spectrum singularity
                                               width assessment (Δ(t)=αmax-αmin) at american
                                               index NASDAQ Composite at period
                                               07.10.1999-07.11.2008


                                                  The index of technology companies
                                                NASDAQ Composite reached its peak in
                                                             March 2000.


After that happened result in a vast dropIn 2000, he reached even five thousandth mark, but
after the general collapse of the market of computer and information technology is now in an
area of up to two thousand points.

     In August 2002 the first NASDAQ closes its branch in Japan, as well as
     closing branches in Europe, and now it was turn European office, where
     for two years, the number of companies whose shares are traded on the
     exchange fell from 60 to 38.
                   Pre-crisis situation:
      July 2008 - the beginning of september 2008
Graph of Multifractal spectrum singularity width assessment
      (Δ(t)=αmax-αmin) at american index NASDAQ Composite at period
                            07.10.1999-09.12.2008
2.5




 2




1.5




 1




0.5




 0
Default’s 1998 indicator.
Part Multifractal spectrum of data
related to graph b)

 Данные       min         max

   11.08.98    2,837      3,337     0,5
                                                       a)
   12.08.98    2,837      3,335   0,498

   13.08.98    2,838      3,325   0,487

   14.08.98    2,839      3,344   0,505

   17.08.98         1,8    3,36    1,56

   18.08.98     1,97        3,3    1,33

   19.08.98    1,355       3,26   1,905

   20.08.98    1,499      3,264   1,765

   21.08.98    1,499        3,4   1,901

   24.08.98         1,5   3,249   1,749



The red line shows that the width                      b)
multifraktalnogo spectrum begins
to grow at the same time as
changing the exchange rate, but
more clearly.
Wavelet-analysis


                    W( , )        x(t )   ,       (t )dt,

   где   ,   (t)– where(t)– function with zero mean centered
                             ,
    around zero with time scale and time horizon .
   Family of wavelet vectors is created from mother function
    by displacement and scaling
                                  1               t
                           (t )               (             )
Time series f(t) representation as linear
    combination of wavelet functions

           f (t )             j0      j0 , k (t )            j ,k   j , k (t ),
                       k                            j j0 k


              j0 , k       f (t )   j0 , k (t )dt



               j,k         f (t )    j , k (t )dt


where jo – a constant, representing the highest level of
 resolution for which the most acute details are extracted
 .
WA crisis detection
               experiment - 1
   In our study we used Daubechies wavelet functions
    decomposition (db-4 и db-12).

   The goal was the detection of the signal, which could
    predict the sudden changes. Data on exchange rates
    (USD) to the ruble were taken from the site www.rts.ru
    for the period 1.09.1995 - 12.02.1999

   The total number of numbered in the order several times
    in the interim for the period 1.09.1995 - 12.02.1999 was
    862 value.
0
                   5
                       10
                            15
                                 20
                                      25
 01.09.1995 
 04.11.1995 
 22.01.1996 
 27.03.1996 
 04.06.1996 
 09.08.1996 
 14.10.1996 
 18.12.1996 
 25.02.1997 
 05.05.1997 
 10.07.1997 
 12.09.1997 
 18.11.1997 
 27.01.1998 
                                                    1.09.1995 – 12.02.1999




 02.04.1998 
 10.06.1998 
 14.08.1998 
 19.10.1998 
 24.12.1998 
                                           Graph of changing RTS indexes at period
The division time series on the ranges

   To achieve the goal of this time series was divided into 7
    overlapping intervals located unevenly, so that the
    interval 4 (242-753) immediately preceding the time of
    default and subsequent intervals captured the moment of
    default.

   Each interval consisted of 512 values: 1-512, 101-
    612, 201-712, 242-753, 251-762, 301-812, 351-862.
Predicting the crisis with the help of wavelet analysis
#   Interval      Maximum for      Difference maximum
                                                        12
                   all levels              ratios
                                                        10

                                                        8
1   1-512         0,068796      -
                                                        6

2   101-612       0,140859      0,072062                4

                                                        2

3   201-712       0,150173      0,009314                0
                                                                  13.02.1998       10.07.1998      07.09.1998     18.09.1998     30.11.1998      12.02.1999 
                                                        -2
4   242-753       11,234599     11,084426               -4

                                                        -6
5   251-762       11,850877     0,616278
6   301-812       7,944381      -3,906496                    The schedule changes difference ratios of maximum ratios
                                                             of decomposition of Dobeshi-12 for the period 19.09.1997-
7   351-862       9,802439      1,858058                     12.02.1999 (dates are taken on the right border, ie 512
                                                             value)


                                                         1,8
#      interval          Average          Difference     1,6

                          value           averages       1,4

                                                         1,2
1      1-512           5,249121       -                      1

                                                         0,8
2      101-612         5,518002       0,268881           0,6

                                                         0,4
3      201-712         5,759273       0,241271           0,2


4      242-753         5,926961       0,167688               0
                                                                    13.02.1998      10.07.1998     07.09.1998     18.09.1998     30.11.1998     12.02.1999 


5      251-762         6,077492       0,150531
                                                             The schedule change ratios of difference from the average value
6      301-812         7,124922       1,047431               of currencies this intervala to the value of the previous intervala
                                                             for the period 19.09.1997-12.02.1999 (dates are taken on the
7      351-862         8,672407       1,547484               right border, ie 512 value).
The difference coefficients
                     of Daubechies -12
№ interval    Maximum for     Difference      20000
              all levels      maximum
                                              15000
                                ratios
                                              10000
1   1-128     13083,070     --------------
2   64-192    223,834       -12859,235         5000

3   96-224    262,039       38,204                0

4   106-234   258,122       -3,916




                                                                  7



                                                                  7



                                                                  7



                                                                  7



                                                                  7



                                                                  7



                                                                  7



                                                                  7



                                                                  7
                                                                98



                                                                98



                                                                98



                                                                98



                                                                98



                                                                98



                                                                98



                                                                98



                                                                98
                                               -5000




                                                             .1



                                                             .1



                                                             .1



                                                             .1



                                                             .1



                                                             .1



                                                             .1



                                                             .1



                                                             .1
                                                           04



                                                           07



                                                           09



                                                           09



                                                           09



                                                           10



                                                           10



                                                           10



                                                           12
                                                         1.



                                                         2.



                                                         4.



                                                         1.



                                                         8.



                                                         1.



                                                         5.



                                                         9.



                                                         1.
5   111-239   262,371       3,917




                                                       -2



                                                       -2



                                                       -0



                                                       -2



                                                       -2



                                                       -0



                                                       -1



                                                       -1



                                                       -3
                                                     86



                                                     87



                                                     87



                                                     87



                                                     87



                                                     87



                                                     87



                                                     87



                                                     87
                                              -10000




                                                   19



                                                   19



                                                   19



                                                   19



                                                   19



                                                   19



                                                   19



                                                   19



                                                   19
                                                 0.



                                                 1.



                                                 3.



                                                 3.



                                                 3.



                                                 3.



                                                 4.



                                                 4.



                                                 6.
6   114-242   14785,540     14523,169

                                               .1



                                               .0



                                               .0



                                               .0



                                               .0



                                               .0



                                               .0



                                               .0



                                               .0
                                             17



                                             19



                                             05



                                             19



                                             26



                                             31



                                             14



                                             16



                                             30
                                              -15000
7   124-252   789,933       -13995,607
                                              -20000
8   126-254   1298,050      508,117
9   177-305   475,376       -822,673

                                             The schedule changes difference maximum
                                             coefficients of expansion in the Dobeshi-12
                                             (17.10.1986-31.12.1987).
«Black Monday» Detector
   At the previous slide we can see the positive
    peak earlier 01.10.87 and negative peak before
    15.10.87.
   This is more than 4 days before the «Black
    Monday».
   Sharp line connects the two peaks.
    Obviously, this information can serve as a
    detector impending crisis.
42 days prior to the default
   Of the figure shows that the start of trading, the corresponding spike in the
    dollar may be adopted point 742 (21.08.1998), a peak corresponds to 754
    points (07.09.1998).

    As we can see from the previous slide in the event of data processing by
    the Russian default by default, if we use the average of the indicator is the
    intervals difference, then we can find that the sharp increase occurring
    18.09.1998, ie delayed by at least 11 days. At the same time schedule for
    the coefficients of wavelet functions shows us that the beginning of dramatic
    changes difference wavelet coefficients of expansions is a point 712
    (10.07.1998).

    We can, apparently, to predict the onset of default at least 42 days
    (10.07.1998 - 21.08.1998). At the same time increase the maximum value
    (Fig. 4) of this indicator in the starting time was 74.5 times (initial value =
    0.15; following value = 11.23)
WA crisis detection
               experiment - 2
   In our experiment, number 2, we used Daubechies
    wavelet functions decomposition (db-4).


   The goal was the detecting the signal, which could
    predict the sudden changes in the index DJI (Dow Jones
    Index - Dow Jones). Data on DJI were taken from the
    site http://finance.yahoo.com for the period 7.10.1999 -
    24.11.2008

   The total number of numbered in the order several times
    in the interim for the period 7.10.1999 - 24.11.2008 at
    2299 values.
7000
                    8000
                           9000
                                  10000
                                          11000
                                                  12000
                                                          13000
                                                                  14000
                                                                          15000
07.10.1999

07.04.2000

07.10.2000

07.04.2001

07.10.2001

07.04.2002

07.10.2002

07.04.2003

07.10.2003

07.04.2004

07.10.2004

07.04.2005

07.10.2005

07.04.2006

07.10.2006

07.04.2007

07.10.2007

07.04.2008

07.10.2008
                                                                                  Graph DJI change 7.10.1999-8.11.2008
Change the values of Hurst exponent said that the market in anticipation
 0,65
                       of becoming antipersistent crisis: H <0,5
  0,6

 0,55

  0,5

 0,45

  0,4

 0,35

  0,3

 0,25

  0,2
          Changing detailing factors wavelet decomposition of db-4 show
                        conversion market (antipersistent)
15000                                                                              3500

14000                                                                              3000

13000                                                                              2500

12000                                                                              2000

                                                                                   1500
11000
                                                                                   1000
10000
                                                                                   500
 9000
                                                                                   0
 8000

 7000
07 9

07 0

07 0

07 1

07 1

07 2

07 2

07 3

07 3

07 4

07 4

07 5

07 5

07 6

07 6

07 7

07 7

07 8

      08
      9

      0

      0

      0

      0

      0

      0

      0

      0

      0

      0

      0

      0

      0

      0

      0

      0

      0
    0.

    4.

    0.

    4.

    0.

    4.

    0.

    4.

    0.

    4.

    0.

    4.

    0.

    4.

    0.

    4.

    0.

    4.

    0.
  .1

  .0

  .1

  .0

  .1

  .0

  .1

  .0

  .1

  .0

  .1

  .0

  .1

  .0

  .1

  .0

  .1

  .0

  .1
07
Changing detailing factors wavelet decomposition of
     db-4 suggest crossing a market for the period
                07.07.2005 - 24.11.2008
15000                                                   3500


14000                                                   3000

13000
                                                        2500

12000
                                                        2000
11000
                                                        1500
10000
                                                        1000
 9000

                                                        500
 8000

 7000                                                   0
        07.07.05
        07.09.05
                   07.11.05
                   07.01.06
                   07.03.06
                   07.05.06
                   07.07.06
                              07.09.06
                              07.11.06
                              07.01.07
                              07.03.07
                              07.05.07
                                         07.07.07
                                         07.09.07
                                         07.11.07
                                         07.01.08
                                         07.03.08
                                         07.05.08
                                         07.07.08
                                         07.09.08
                                         07.11.08
Fundamental analysis
   Fundamental analysis is based on an assessment of market
    conditions in general and assessing the future development
    of a single issuer.


   Fundamental analysis is a fairly laborious and a special
    funding agencies.


   Fundamental analysis depends on the news of factors. By
    random and unexpected news include political and
    natural, as well as war.


   How to conduct a fundamental analysis can be divided into
    four separate units, correlating with each other.
Fundamental analysis
                   technology
The first unit - is a macroeconomic analysis of the economy as a whole.

The second unit - is an industrial analysis of a particular industry.

A third unit - a financial analysis of a particular enterprise.

A fourth unit - analyzing the qualities of investment securities issuer.




      Fundamental analysis technology includes an
       analysis of news published in the media, and
       comparing them with the securities markets.
Analysis Method
Keyword extraction, characterizing the market: boost
  or cut, the increase / decrease.

Automatic analysis using the terminology the
  ontology.

Processing time series (filtering, providing trends, the
  seasonal components).

Using neural networks to classify the flow of news and
  processing time series.
News analysis target
•Examine what news articles relevant to the company, Yahoo uses
profiling to establish consistency between articles and companies.



•For each trend formed a temporary window to explore how art
relates to the trend.



•It is believed that there is a match, if the article appeared a few
hours before the trend.
The intensity of the flow of news data
       The joint processing of digital and text data


                          Time series                  Flow intensity:
Digital data
               The movement of financial instruments
                        (price / volume)               5Mb/day, on the
                                                            tool



                            Text flows
                          Various types:               Flow intensity:
 Text data
                 News, financial reports, company
                brochures, government documents          20Mb/day
Idea of system
Past articles
 with news

                  Building
                               Model
                   model

 Past data
                                         Prediction   System
  pricing
                                          results      exit
 securities
  market                        New
                             arcticles
                             with news
Real system architecture
                         Reuters News
                             Feed

    Up
                       SYSTEM QUIRK


   Down


                        Time Series of           1.2




                        Up and Down               1



                                                 0.8



                                         Ratio   0.6



                                                 0.4



                                                 0.2




                                                                                                                                                              Generate Signal
                                                  0
                                                       1       2       5   6   7   8    9    12 13 14 15 16 19 20 21 22 23 26 27 28 29 30


Financial instrument                                                                                     Date



(Reuters) e.g. FTSE                                                                    Good words                        FTSE100                                 (Buy / Sell)
        100                                            1.
                                                        2



      INDEX                                            0
                                                        1



                                                        8
                                                        .


                                         Rati o        06
                                                        .


                                                       04
                                                        .



                                                       02
                                                        .



                                                           0

                                                                   1   2   5   6   7    8    9   12 13   14 15   16 19   20 21   22 23   26 27   28 29   30



                                                                                                          Date


                                                                                            Good wor ds                          FT SE 100
Comparsion time and stocks by time
Text analysis should apply:
Recognition of the named entity. The discovery of those
  (people), organizations, currencies.

Extracting key information related to organizations, persons, facts, evidence from
   documents.

The establishment of relations between the patterns.

Creating a template to scripting events, organizations, regions.

The formation of coherence - to collect information on sovstrechaemosti
   expressions. The result of the system is the text as a set of the following
   components:

<AGENT> <CONCERN> <GOAL> <AGENT>
 <CONCERN, THE IMPORTANCE> <GOAL, the value>

Between formed in such a description of news and current prices of assets in the
   securities market established statistical connection to predict price changes
   depending on the nature of news.
Fundamental analysis ontology
News, alter securities course
Fundamental analysis results with
 Automatic 3-side
   integration
                              ontology using                     Concentrated
                                                               content, organised
                                                                 with semantic
                                                                   categories




                                                                     Relevant
                                                                   content, not
                                                                expressed evidently
                                                                     (semantic
                                                                   associations)




    Competetive                                                Automatic content
researches, discover                                       integration from sources
  ed automatically                                            and other providers
Price graphs and charts

Pricing models
calls figures or creatings, which appers on price
graphs
These figures, or education (chart
pattern), divided into some groups and can be
used to predict the market dynamics
Thank you!


            Tel.: +79036169431, 8(495)9582410,
Fax: (495)9982395;
Address: 36 Stremyanny lane, Moscow, 117997;
e-mail: Romanov.vp@rea.ru, victorromanov1@gmail.com

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Financial market crises predictor

  • 1. Financial market crises prediction by multifractal and wavelet analysis. Russian Plekhanov Academy of Economics Romanov V.P., Bachinin Y.G., Moskovoy I.N., Badrina M.V. Tel.: +79036169431, 8(495)9582410, Fax: (495)9982395; Address: 36 Stremyanny lane, Moscow, 117997; e-mail: Romanov.vp@rea.ru, victorromanov1@gmail.com
  • 2. The aim of the research  It is well known, that financial markets are essentially non- linear systems and financial time series are fractals.  That’s why prediction of crash situations at finance market is a very difficult task. It doesn’t allow us to use effectively such well-known methods as ARIMA or MACD in view of their sluggishness.  Multifractal and wavelets analysis methods are providing more deep insight into the nature of phenomena. Multiagent simulation makes it possible to explicate dynamic properties of the system.  The main aim is to find out the predictors or some kind of predicting signals which may warn as about forthcoming crisis
  • 3. a) Changing of ruble/dollar exchange b) American Index Dow Jones rate at period 01.08.1997-01.11.1999 Industrial at “Black Monday” 1987 (Default in Russia) at period 17.10.1986-31.12.1987
  • 4. с) Dow Jones Industrial d) RTSI Index 07.10.1999 -06.10.2008 07.10.1999 -06.10.2008 e) Nasdaq 07.10.1999 -06.10.2008
  • 5. Indexes DJI, RTS.RS, NASDAQ, S&P 500 falling at crisis period 1 month 3 months 6 months September 15,2008 – October 17, 2008 July 17,2008 – October 17, 2008 April 17,2008 – October 17, 2008 The collapse in the stock markets Investors fear that the attempt to When Asian stock indices the analysts linked to the negative improve the situation by pouring collapsed to a minimum for external background. U.S. indexes in amount of $ 700 billion, which more than three years. have completed a week 29.09 - involves buying from banks The negative news had left the 6.10 falling, despite the fact that illiquid assets will not be able to Russian market no choice – its the U.S. Congress approved a plan improve the situation in credit began to decline rapidly. to rescue the economy. markets and prevent a decline in the economy.
  • 6. Efficient Market Hypothesis (EMH) asserts, that financial markets are "informationally efficient", or that prices on traded assets, e.g., stocks, bonds, or property, already reflect all known information. The efficient-market hypothesis states that it is impossible to consistently outperform the market by using any information that the market already knows, except through luck. Information or news in the EMH is defined as anything that may affect prices that is unknowable in the present and thus appears randomly in the future.  Capital Asset Pricing Model (CAPM) is used to determine a theoretically appropriate required rate of return of an asset, if that asset is to be added to an already well-diversified portfolio, given that asset's non-diversifiable risk. The model takes into account the asset's sensitivity to non-diversifiable risk (also known as systemic risk or market risk), often represented by the quantity beta (β) in the financial industry, as well as the expected return of the market and the expected return of a theoretical risk-free asset.  Arbitrage pricing theory (APT), in finance, is a general theory of asset pricing, that has become influential in the pricing of stocks. APT holds that the expected return of a financial asset can be modeled as a linear function of various macro-economic factors or theoretical market indices, where sensitivity to changes in each factor is represented by a factor-specific beta coefficient.
  • 7. Efficient Market Hypothesis versus Fractal Market Hypothesis Efficient market hypothesys Fractral market hypothesys (EMH) (FMH)  Assumption of normal  Prices shows leptoexcess effect for distribution of prices prices probability distribution(“fat increments tails”)  The weak form EMH from a  The prices plot looks similary for purely random distribution of the period of time in the day, week, prices has been criticized month (fractal pattern)  Semi-strong form of EMH, in  Reducing the reliability of which all available information predictions with the increase of its is reflected in the prices used period by professionals  Prices shows short-term and long-  Changing prices in the long term correlation and trends (the run does not show the effect of feedback) presence of «memory»  Chaotic activity of the market
  • 8. Fractal definition Fractals –The term fractal was coined in 1975 by Benoît Mandelbrot, from the Latin fractus, meaning "broken" or "fractured". (colloquial) a shape that is recursively constructed or self- similar, that is, a shape that appears similar at all scales of magnification. (mathematics) a geometric object that has a Hausdorff dimension greater than its topological dimension.  The second feature that characterizes fractals is the fractional dimension. The word fractal came from fractional values – partial values, which may take the fractal dimension of objects Fractals may cause the application of Iterative Functions System  The image, which is the only fixed point of IFS is called attractor
  • 9. Chaos and dynamics of fractal market  Market prices tend to level the natural balance within the price range  These levels or ranges can be described as «attractors»  However, the data within those ranges remain casual
  • 10. Attractors types Point attractors • The simplest form of the attractor. In theory, compatible with the balance of supply and demand in the economy or the market equilibrium. Limit cycle attractors • Represent market volatility on balance, or "market noise" Strange or fractal attractors • Displays Multiple varying the amplitude fluctuation, which are contained within the set limit cycle attractor, called «phase space».
  • 14. Fractal attractors and financial markets  Stocks and futures - classic examples of securities. Profit from buying and selling comparable with fluctuations in the pendulum  Each bearer security or futures contract are located in its own phase space  Long-term forecasting is heavily dependent on accurate measurement of initial conditions of the market
  • 15. Fractals on capital market  Financial markets describes a nonlinear function of active traders  Traditional methods of technical analysis based on linear equations and Euclidean geometry are inadequate  Market jumps growth and recession are nonlinear  Technical analysis methods are poor indicators of the relationship trend and trading decisions  Fractals can describe the phenomena that are not described in Euclidean geometry
  • 16. Multifractal Stochastic process {x(t)} is called Multifractal, if it has fixed increments and satisfies the condition τ(q) 1 E(| xt+ Δt xt | ) = c(q)( Δt ) , q when c(q) – predictor, E- operator of mathematical expectation, q Q , t B – intervals on the real axis. Scaling function (q) taking into account the impact of time on points q.
  • 17. Definiting the Fractal Dimension Index  Fractal dimension indedx (FDI): ln( N A (1 / n)) d lim n ln(n)  NS(1/2n)–the number of blocks with a length of hand 1/2n, which necessary, to cover S – Serpinsky triangle. ln(3n ) ln(3) ds lim 1,58 n ln(2n ) ln(2)  Где NA (1/n) – the number of blocks with length of hand, equal 1/n, which necessary to cover variety А. Фрактальное Множество А
  • 18. Fractal Dimension Index  Defines the persistence or antipersistence of market. Persistent market weakly fluctuated around the market trend  antipersistent market shows considerable volatility on the trend  antipersistent market is more rugged pricing schedule and more frequently show a change trends
  • 19. Crisis prediction technique  Because our goal is the prediction of crises, we are trying to first find out the best indicator, using methodology Multifractal and wavelet analysis.  Then we test various types of pre-processing the original time series to find the best indicator.
  • 20. Hurst exponent xt ln z t 1 ln z t , t 1,..., T Depending on the value of Heurst t exponent the properties of the 1 process are distinguished as follows: x(t , ) xu x , x x u 1 t 1 When H = 0.5, there is a process of random walks, which confirms the hypothesis EMH. R( ) max x(t , ) min x(t , ) t 1 t 1 When H > 0.5, the process has long- term memory and is persistent, that 1 2 is it has a positive correlation for S( ) xu x different time scales. u 1 When H < 0.5, time-series is anti- persistent with average switching log R ( ) from time to time. S( ) H log
  • 21. Time series partitioning  Time series: {xt}; t [0, T].  Compute: Z={zt}, zt= lnxt+1-lnxt; t [0,T];  Divide interval [0, T] into N subintervals, 1 ≤ N ≤ Nmax.  Each subinterval contains int (T/N)=A values Z;  For each subinterval K; 1 ≤ K ≤ N current reading number lK;1 ≤ lK ≤ A; t = (K-1) А+ lK  As soon as we are looking for the best indicator of a coming default, we will use several variants of a preliminary processing.
  • 22. Time series preprocessing  1. The original time series itself: Z={zt};  2. Preprocessed time series Z1={ Z K }, K=1,2,…N,  A 1 ZK z0l where Al 1 K K  Z0 K 1 A lK ZK  3. Preprocessed time series Z2 SK 1 A  2 where S K Z 0l K ZK A lK 1   4. Preprocessed time series Z3={ Z0 K 1 A l K Z K}
  • 23. Partition functions For each preprocessed time series compute partition function for different N and q values : N 0 N ( Z , q) | Z 0 ( KA ) (T ) Z 0 ( K 1) A |q K 1 N   1 N ( Z , q) | Z K (T ) Z K 1 |q K 1 N 2 N ( Z , q) | Z 2 ( KA ) Z 2( K 1) A |q K 1 N 3 N ( Z , q) | Z 3 ( KA ) Z 3(K 1) A |q K 1
  • 24. Scaling functions 0 log N ( Z , q) log A log N 0 N (q) log A 1 log N ( Z , q) log A log N 1 N (q) log A 2 log N ( Z , q) log A log N 2 N (q) log A 3 log N ( Z , q) log A log N 3 N (q) log A
  • 25. Fractal dimension spectrum estimation 1. Lipshitz – Hoelder exponent estimation: : d i   i i ( i (q) i (q 1)) / q (q)/ q dq when, i = 1, 2, 3, 4. 2. Fractal dimension spectrum estimation by Legendre transform fI ( ) arg min [q i (q)] (arg min [q i (q) i (q)]) q q
  • 26. Fractal dimension spectrum width as crash indicator  Multifractal may be composed of two or infinite number of monofractals with continuous varying α values. Width of α spectrum may be estimated as difference between maximum and minimum values of α: Δ = max - min ,  By carrying out Legendre transform we are trying using our program by estimating Δ to find differences in its values before and after crash.  Roughly speaking f( ) gives us number of time moments, for which degree of polynomial, needed for approximation f( ) equals (according to Lipshitz condition).
  • 27. Scaling functions Changes in currency for the Non-linear scaling function Russian default of 1998 (q) (Multifractal process)
  • 28. Screenshots assessment of Multifractal spectrum of singularity Assesment of multifractal Assesment of multifractal spectrum of singularity at spectrum of singularity at period 09.07.96-21.07.98 period 18.11.96-30.11.98
  • 29. Scaling functions Dow Jones Industrial Index, pre- Non-linear scaling-function (q) crisis situation (multifractal process) 19.12.2006-06.10.2008
  • 30. Scaling functions RTSI index, Non-linear scaling-function (q) pre-crisis situation (multifractal process) 19.12.2006-06.10.2008
  • 31. Scaling functions linear scaling-function (q) Assesment of multifractal (monofractal process) spectrum of singularity RTSI at period 16.05.2000 -30.05.2002
  • 32. Screenshots assesment of Multifractal spectrum of singularity Assesment of multifractal Assesment of multifractal spectrum of singularity DJI at spectrum of singularity RTSI at period 19.12.2006-08.10.2008 period 16.12.2003-10.01.2006
  • 33. "Needles" that determine the expansion of Multifractal spectrum on an hourly schedule 5.2008-11.2008
  • 34. Experimental results American Dow Jones at the «Black Monday» 1987 period 17.10.1986- 31.12.1987 Schedule assessment of the width of the Schedule assessment of the width of the spectrum of fractal singularity (Δ(t)=αmax-αmin) spectrum of fractal singularity (Δ(t)=αmax-αmin) for different periods of time at the «Black Monday»
  • 35. Graph of Multifractal spectrum singularity width assessment (Δ(t)=αmax-αmin) at russian index RTSI at period 07.10.1999-07.11.2008 interval Qmin Qma N ∆ x 1-512 07.10.1999 –18.10.2001 -2 6 47 0,964 151-662 16.05.2000 -30.05.2002 -2 6 103 0,495 301-812 15.12.2000 -31.12.2002 -2 6 129 1,62 451-962 25.07.2001 -11.08.2003 -2 5 31 0,81 601-1112 28.02.2002 -17.03.2004 -2 6 170 1,77 751-1262 03.10.2002 -19.10.2004 -2 6 129 2,17 901- 1412 15.05.2003 -02.06.2005 -2 6 129 1,927 1051-1562 16.12.2003 -10.01.2006 -2 5 43 0,952 1201-1712 26.07.2004 -15.08.2006 -2 5 21 0,868 1351-1862 04.03.2005 -26.03.2007 -2 5 22 0,89 1501-2012 06.10.2005 -25.10.2007 -2 5 23 0,848 1651-2162 19.05.2006 -07.06.2008 -2 5 40 0,927 1801-2246 19.12.2006 -06.10.2008 -2 7 145 2,133 1765-2277 25.09.2006 -07.11.2008 -2 7 161 2,177
  • 36. Experimental results(RTSI) Over 4 years outstanding mortgage loans in Russia rose more than 16 times - from 3.6 billion rubles. in 2002 to 58.0 billion rubles. in 2005. In quantitative terms - from 9,000 loans in 2002 to 78,603 in 2005. Pre-crisis situation: July 2008 - the beginning of september 2008 Graph of Multifractal spectrum singularity width assessment (Δ(t)=αmax-αmin) at russian index RTSI at period 07.10.1999-07.11.2008 Why mortgage evolving so rapidly? Many factors. This increase in real incomes and the decline of distrust towards mortgage, as from potential buyers, and from the sellers, and a general reduction in the average interest rate for mortgage loans from 14 to 11% per annum, and the advent of Moscow banks in the regions, and intensifying in the market of small and medium-sized banks.
  • 37. Graph of Multifractal spectrum singularity width assessment (Δ(t)=αmax-αmin) at Russian index RTSI at period 07.10.1999-09.12.2008 2.5 2 1.5 1 0.5 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
  • 38. Graph of Multifractal spectrum singularity width assessment (Δ(t)=αmax-αmin) at american index Dow Jones Industrial at period 07.10.1999-07.11.2008 interval Qmin Qmax N ∆ 1-512 07.10.1999 –18.10.2001 -2 5 164 1,84 151-662 16.05.2000 -30.05.2002 -2 4 5 0,717 301-812 15.12.2000 -31.12.2002 -2 5 134 1,77 451-962 25.07.2001 -11.08.2003 -2 5 65 1,01 601-1112 28.02.2002 -17.03.2004 -2 5 74 1,108 751-1262 03.10.2002 -19.10.2004 -2 4 11 0,791 901- 1412 15.05.2003 -02.06.2005 -2 4 38 0,803 1051-1562 16.12.2003 -10.01.2006 -2 4 50 0,815 1201-1712 26.07.2004 -15.08.2006 -2 4 53 0,884 1351-1862 04.03.2005 -26.03.2007 -2 4 57 0,973 1501-2012 06.10.2005 -25.10.2007 -2 4 29 0,864 1651-2162 19.05.2006 -07.06.2008 -2 4 11 0,836 1801-2263 19.12.2006 -06.10.2008 -2 5 151 2,324 1765-2284 25.09.2006 -07.11.2008 -2 5 174 1,984
  • 39. Experimental results(DJI) Graph of Multifractal spectrum singularity width assessment (Δ(t)=αmax-αmin) at american index Dow Jones Industrial at period 07.10.1999-07.11.2008 3 May, 1999, the index reached a value of 11014.70. Its maximum - mark 11722.98 - Dow-Jones index reached at 14 January 2000. There was a sharp drop in the index and 9 october 2002 DJIA reached an interim minimum with a value of 7286,27. Pre-crisis situation: July 2008 - the beginning of september 2008 Dow Jones Industrial index of 15 september 2008, fell to 4.42 per cent to 10,917 points - is the largest of its fall in a single day since 9 october 2002, reported France Presse. World stock markets experienced a sharp decline in major indexes in connection with the bankruptcy Investbank Lehman Brothers.
  • 40. Graph of Multifractal spectrum singularity width assessment (Δ(t)=αmax-αmin) at american index Dow Jones Industrial at period 07.10.1999-09.12.2008 3 2.5 2 1.5 1 0.5 0
  • 41. Graph of Multifractal spectrum singularity width assessment (Δ(t)=αmax-αmin) at american index NASDAQ Composite at period 07.10.1999-07.11.2008 interval Qmi Qmax N ∆ n 1-512 07.10.1999 –18.10.2001 -2 6 47 0,91 151-662 16.05.2000 -30.05.2002 -2 6 57 0,935 301-812 15.12.2000 -31.12.2002 -2 6 86 1,092 451-962 25.07.2001 -11.08.2003 -2 5 25 0,74 601-1112 28.02.2002 -17.03.2004 -2 5 31 0,821 751-1262 03.10.2002 -19.10.2004 -2 5 129 1,385 901- 1412 15.05.2003 -02.06.2005 -2 4 9 0,726 1051-1562 16.12.2003 -10.01.2006 -2 4 13 0,765 1201-1712 26.07.2004 -15.08.2006 -2 4 19 0,78 1351-1862 04.03.2005 -26.03.2007 -2 4 19 0,792 1501-2012 06.10.2005 -25.10.2007 -2 4 15 0,778 1651-2162 19.05.2006 -07.06.2008 -2 4 5 0,772 1801-2263 19.12.2006 -06.10.2008 -2 5 77 1,185 1765-2284 25.09.2006 -07.11.2008 -2 6 207 1,067
  • 42. Experimental results(NASDAQ) Graph of Multifractal spectrum singularity width assessment (Δ(t)=αmax-αmin) at american index NASDAQ Composite at period 07.10.1999-07.11.2008 The index of technology companies NASDAQ Composite reached its peak in March 2000. After that happened result in a vast dropIn 2000, he reached even five thousandth mark, but after the general collapse of the market of computer and information technology is now in an area of up to two thousand points. In August 2002 the first NASDAQ closes its branch in Japan, as well as closing branches in Europe, and now it was turn European office, where for two years, the number of companies whose shares are traded on the exchange fell from 60 to 38. Pre-crisis situation: July 2008 - the beginning of september 2008
  • 43. Graph of Multifractal spectrum singularity width assessment (Δ(t)=αmax-αmin) at american index NASDAQ Composite at period 07.10.1999-09.12.2008 2.5 2 1.5 1 0.5 0
  • 44. Default’s 1998 indicator. Part Multifractal spectrum of data related to graph b) Данные min max 11.08.98 2,837 3,337 0,5 a) 12.08.98 2,837 3,335 0,498 13.08.98 2,838 3,325 0,487 14.08.98 2,839 3,344 0,505 17.08.98 1,8 3,36 1,56 18.08.98 1,97 3,3 1,33 19.08.98 1,355 3,26 1,905 20.08.98 1,499 3,264 1,765 21.08.98 1,499 3,4 1,901 24.08.98 1,5 3,249 1,749 The red line shows that the width b) multifraktalnogo spectrum begins to grow at the same time as changing the exchange rate, but more clearly.
  • 45. Wavelet-analysis W( , ) x(t ) , (t )dt,  где , (t)– where(t)– function with zero mean centered , around zero with time scale and time horizon .  Family of wavelet vectors is created from mother function by displacement and scaling 1 t (t ) ( )
  • 46. Time series f(t) representation as linear combination of wavelet functions f (t ) j0 j0 , k (t ) j ,k j , k (t ), k j j0 k j0 , k f (t ) j0 , k (t )dt j,k f (t ) j , k (t )dt where jo – a constant, representing the highest level of resolution for which the most acute details are extracted .
  • 47. WA crisis detection experiment - 1  In our study we used Daubechies wavelet functions decomposition (db-4 и db-12).  The goal was the detection of the signal, which could predict the sudden changes. Data on exchange rates (USD) to the ruble were taken from the site www.rts.ru for the period 1.09.1995 - 12.02.1999  The total number of numbered in the order several times in the interim for the period 1.09.1995 - 12.02.1999 was 862 value.
  • 48. 0 5 10 15 20 25  01.09.1995   04.11.1995   22.01.1996   27.03.1996   04.06.1996   09.08.1996   14.10.1996   18.12.1996   25.02.1997   05.05.1997   10.07.1997   12.09.1997   18.11.1997   27.01.1998  1.09.1995 – 12.02.1999  02.04.1998   10.06.1998   14.08.1998   19.10.1998   24.12.1998  Graph of changing RTS indexes at period
  • 49. The division time series on the ranges  To achieve the goal of this time series was divided into 7 overlapping intervals located unevenly, so that the interval 4 (242-753) immediately preceding the time of default and subsequent intervals captured the moment of default.  Each interval consisted of 512 values: 1-512, 101- 612, 201-712, 242-753, 251-762, 301-812, 351-862.
  • 50. Predicting the crisis with the help of wavelet analysis # Interval Maximum for Difference maximum 12 all levels ratios 10 8 1 1-512 0,068796 - 6 2 101-612 0,140859 0,072062 4 2 3 201-712 0,150173 0,009314 0  13.02.1998   10.07.1998   07.09.1998   18.09.1998   30.11.1998   12.02.1999  -2 4 242-753 11,234599 11,084426 -4 -6 5 251-762 11,850877 0,616278 6 301-812 7,944381 -3,906496 The schedule changes difference ratios of maximum ratios of decomposition of Dobeshi-12 for the period 19.09.1997- 7 351-862 9,802439 1,858058 12.02.1999 (dates are taken on the right border, ie 512 value) 1,8 # interval Average Difference 1,6 value averages 1,4 1,2 1 1-512 5,249121 - 1 0,8 2 101-612 5,518002 0,268881 0,6 0,4 3 201-712 5,759273 0,241271 0,2 4 242-753 5,926961 0,167688 0  13.02.1998   10.07.1998   07.09.1998   18.09.1998   30.11.1998   12.02.1999  5 251-762 6,077492 0,150531 The schedule change ratios of difference from the average value 6 301-812 7,124922 1,047431 of currencies this intervala to the value of the previous intervala for the period 19.09.1997-12.02.1999 (dates are taken on the 7 351-862 8,672407 1,547484 right border, ie 512 value).
  • 51. The difference coefficients of Daubechies -12 № interval Maximum for Difference 20000 all levels maximum 15000 ratios 10000 1 1-128 13083,070 -------------- 2 64-192 223,834 -12859,235 5000 3 96-224 262,039 38,204 0 4 106-234 258,122 -3,916 7 7 7 7 7 7 7 7 7 98 98 98 98 98 98 98 98 98 -5000 .1 .1 .1 .1 .1 .1 .1 .1 .1 04 07 09 09 09 10 10 10 12 1. 2. 4. 1. 8. 1. 5. 9. 1. 5 111-239 262,371 3,917 -2 -2 -0 -2 -2 -0 -1 -1 -3 86 87 87 87 87 87 87 87 87 -10000 19 19 19 19 19 19 19 19 19 0. 1. 3. 3. 3. 3. 4. 4. 6. 6 114-242 14785,540 14523,169 .1 .0 .0 .0 .0 .0 .0 .0 .0 17 19 05 19 26 31 14 16 30 -15000 7 124-252 789,933 -13995,607 -20000 8 126-254 1298,050 508,117 9 177-305 475,376 -822,673 The schedule changes difference maximum coefficients of expansion in the Dobeshi-12 (17.10.1986-31.12.1987).
  • 52. «Black Monday» Detector  At the previous slide we can see the positive peak earlier 01.10.87 and negative peak before 15.10.87.  This is more than 4 days before the «Black Monday».  Sharp line connects the two peaks. Obviously, this information can serve as a detector impending crisis.
  • 53. 42 days prior to the default  Of the figure shows that the start of trading, the corresponding spike in the dollar may be adopted point 742 (21.08.1998), a peak corresponds to 754 points (07.09.1998). As we can see from the previous slide in the event of data processing by the Russian default by default, if we use the average of the indicator is the intervals difference, then we can find that the sharp increase occurring 18.09.1998, ie delayed by at least 11 days. At the same time schedule for the coefficients of wavelet functions shows us that the beginning of dramatic changes difference wavelet coefficients of expansions is a point 712 (10.07.1998). We can, apparently, to predict the onset of default at least 42 days (10.07.1998 - 21.08.1998). At the same time increase the maximum value (Fig. 4) of this indicator in the starting time was 74.5 times (initial value = 0.15; following value = 11.23)
  • 54. WA crisis detection experiment - 2  In our experiment, number 2, we used Daubechies wavelet functions decomposition (db-4).  The goal was the detecting the signal, which could predict the sudden changes in the index DJI (Dow Jones Index - Dow Jones). Data on DJI were taken from the site http://finance.yahoo.com for the period 7.10.1999 - 24.11.2008  The total number of numbered in the order several times in the interim for the period 7.10.1999 - 24.11.2008 at 2299 values.
  • 55. 7000 8000 9000 10000 11000 12000 13000 14000 15000 07.10.1999 07.04.2000 07.10.2000 07.04.2001 07.10.2001 07.04.2002 07.10.2002 07.04.2003 07.10.2003 07.04.2004 07.10.2004 07.04.2005 07.10.2005 07.04.2006 07.10.2006 07.04.2007 07.10.2007 07.04.2008 07.10.2008 Graph DJI change 7.10.1999-8.11.2008
  • 56. Change the values of Hurst exponent said that the market in anticipation 0,65 of becoming antipersistent crisis: H <0,5 0,6 0,55 0,5 0,45 0,4 0,35 0,3 0,25 0,2 Changing detailing factors wavelet decomposition of db-4 show conversion market (antipersistent) 15000 3500 14000 3000 13000 2500 12000 2000 1500 11000 1000 10000 500 9000 0 8000 7000 07 9 07 0 07 0 07 1 07 1 07 2 07 2 07 3 07 3 07 4 07 4 07 5 07 5 07 6 07 6 07 7 07 7 07 8 08 9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0. 4. 0. 4. 0. 4. 0. 4. 0. 4. 0. 4. 0. 4. 0. 4. 0. 4. 0. .1 .0 .1 .0 .1 .0 .1 .0 .1 .0 .1 .0 .1 .0 .1 .0 .1 .0 .1 07
  • 57. Changing detailing factors wavelet decomposition of db-4 suggest crossing a market for the period 07.07.2005 - 24.11.2008 15000 3500 14000 3000 13000 2500 12000 2000 11000 1500 10000 1000 9000 500 8000 7000 0 07.07.05 07.09.05 07.11.05 07.01.06 07.03.06 07.05.06 07.07.06 07.09.06 07.11.06 07.01.07 07.03.07 07.05.07 07.07.07 07.09.07 07.11.07 07.01.08 07.03.08 07.05.08 07.07.08 07.09.08 07.11.08
  • 58. Fundamental analysis  Fundamental analysis is based on an assessment of market conditions in general and assessing the future development of a single issuer.  Fundamental analysis is a fairly laborious and a special funding agencies.  Fundamental analysis depends on the news of factors. By random and unexpected news include political and natural, as well as war.  How to conduct a fundamental analysis can be divided into four separate units, correlating with each other.
  • 59. Fundamental analysis technology The first unit - is a macroeconomic analysis of the economy as a whole. The second unit - is an industrial analysis of a particular industry. A third unit - a financial analysis of a particular enterprise. A fourth unit - analyzing the qualities of investment securities issuer. Fundamental analysis technology includes an analysis of news published in the media, and comparing them with the securities markets.
  • 60. Analysis Method Keyword extraction, characterizing the market: boost or cut, the increase / decrease. Automatic analysis using the terminology the ontology. Processing time series (filtering, providing trends, the seasonal components). Using neural networks to classify the flow of news and processing time series.
  • 61. News analysis target •Examine what news articles relevant to the company, Yahoo uses profiling to establish consistency between articles and companies. •For each trend formed a temporary window to explore how art relates to the trend. •It is believed that there is a match, if the article appeared a few hours before the trend.
  • 62. The intensity of the flow of news data The joint processing of digital and text data Time series Flow intensity: Digital data The movement of financial instruments (price / volume) 5Mb/day, on the tool Text flows Various types: Flow intensity: Text data News, financial reports, company brochures, government documents 20Mb/day
  • 63. Idea of system Past articles with news Building Model model Past data Prediction System pricing results exit securities market New arcticles with news
  • 64. Real system architecture Reuters News Feed Up SYSTEM QUIRK Down Time Series of 1.2 Up and Down 1 0.8 Ratio 0.6 0.4 0.2 Generate Signal 0 1 2 5 6 7 8 9 12 13 14 15 16 19 20 21 22 23 26 27 28 29 30 Financial instrument Date (Reuters) e.g. FTSE Good words FTSE100 (Buy / Sell) 100 1. 2 INDEX 0 1 8 . Rati o 06 . 04 . 02 . 0 1 2 5 6 7 8 9 12 13 14 15 16 19 20 21 22 23 26 27 28 29 30 Date Good wor ds FT SE 100
  • 65. Comparsion time and stocks by time
  • 66. Text analysis should apply: Recognition of the named entity. The discovery of those (people), organizations, currencies. Extracting key information related to organizations, persons, facts, evidence from documents. The establishment of relations between the patterns. Creating a template to scripting events, organizations, regions. The formation of coherence - to collect information on sovstrechaemosti expressions. The result of the system is the text as a set of the following components: <AGENT> <CONCERN> <GOAL> <AGENT> <CONCERN, THE IMPORTANCE> <GOAL, the value> Between formed in such a description of news and current prices of assets in the securities market established statistical connection to predict price changes depending on the nature of news.
  • 69. Fundamental analysis results with Automatic 3-side integration ontology using Concentrated content, organised with semantic categories Relevant content, not expressed evidently (semantic associations) Competetive Automatic content researches, discover integration from sources ed automatically and other providers
  • 70. Price graphs and charts Pricing models calls figures or creatings, which appers on price graphs These figures, or education (chart pattern), divided into some groups and can be used to predict the market dynamics
  • 71. Thank you! Tel.: +79036169431, 8(495)9582410, Fax: (495)9982395; Address: 36 Stremyanny lane, Moscow, 117997; e-mail: Romanov.vp@rea.ru, victorromanov1@gmail.com