Fatma ÇINAR, MBA Capital Markets Board of Turkey
e-mail: fatma.cinar@spk.gov.tr fatma.cinar@datalabtr.com
@fatma_cinar_ftm @DataLabTR
C. Coşkun KÜÇÜKÖZMEN, PhD e-mail: coskun.kucukozmen@ieu.edu.tr
@ckucukozmen @RiskLabTurkey
Kutlu MERİH, PhD e-mail: kutlu.merih@datalabtr.com
kutmerih@gmail.com @cortexien
www.datalabtr.com
https://www.riskonomi.com
RISK MANAGEMENT WITH DATA VISULISATION
RISK REPORT (abridged)
Description of The Report
This a abridged Sample Report of Defaulted
Mortgage Loans for the 12 NUTS Sectors and
81 cities of Turkey with 2012-2014 time span
Covers only Whole Turkey and West Anatolia
Region
Real Report covers all the 12 NUTS Regions and
81 Cities of Turkey
With 2010-2015 time span
Purpose of the Report
• With this study we investigate NUTS 12
Regions credit loans performations by
Graphical Datamining Analysis technique
with a suitable software developed by us.
• This technique is submitted various OR and
Finance congress
• Dataset are factorized according to cities and
years, sectorals and financial periods
factors.
• Sample Report Covers Periods: 2012-2014
accounts.
Source of The Data
• We downloaded FINTURK dataset from the
site of BRSA and anotated it by NUTS factors.
• Our software read this data from an excel file
with the name of “dataset”
• From now on “dataset” means our improvised
NUTS Credit Loans FINTURK data
Description of The Analytics
• Data: BRSA* and NUTS of Turkey
(Nomenclature of Territorial Units for Statistics, NUTS)
• Dataset: NUTS Region Investment Promotion and 3
account period Graphical Datamining Analysis of
FINTURK of BRSA
• Period: 2012-2014 Accounts
• Dataset are factorized according to year, sector,
quarter and region factors.
• Graphical Datamining and Data Visualisation applied on
this factorized data.
*BRSA: Banking Regulations and Supervisison Agency
Fields : names(dataset)
• names(dataset)
• [1] "NYEAR" "SYEAR" "QUARTERS"
• [4] "CITY" "CITYCODE" "NREGION"
• [7] "REGION" "NUTS3CODE" "NUTS2CODE"
• [10] "NUTS1CODE" "TRNUTS1REGION" "NUTS1REGION"
• [13] "TRGROUP" "SECTORAL" "CASHLOANS"
• [16] "NONCASHLOANS" "TOTALCASHLOANS" "AUTO"
• [19] "MORTGAGE" "OVERDRAFTACCOUNT" "CREDITCARDS"
• [22] "FOOD" "BUILDING" "MINERALS "
• [25] "FINANCIAL" "TEXTILE" "WHOSESALE "
• [28] "TOURISM" "AGRICULTURE" "ENERGY"
• [31] "MARITIME" "OTHERCONSUMER" "DEFRECEIVABLE"
• [34] "DEFCREDITCARDS" "DEFAUTO" "DEFMORTGAGE"
• [37] "DEFOTHERCONSUMER" "DEFFOOD" "DEFBUILDING"
• [40] "DEFMINERALS" "DEFFINANCIAL" "DEFTEXTILE"
• [43] "DEFWHOLESALE " "DEFTOURISM" "DEFAGRICULTURE"
• [46] "DEFENERGY" "DEFMARITIME" "NONCASHFOOD"
• [49] "NONCAHBUILDING" "NONCASHMINERALS" "NONFINANCIAL"
• [52] "NONCASHTEXTILE" "NONCASHWHOLESALE " "NONCASHTOURISM"
• [55] "NONCASHAGRICULTURE“ "NONCASHENERGY" "NONCASHMARITIME"
NUTS of Turkey
(Nomenclature of Territorial Units for Statistics, NUTS)
Wednesday, February
3, 2016
NUTS-1:12 Regions of Turkey
• NUTS-1: 12 Regions
• NUTS-2: 26 Subregions
• NUTS-3: 81 Provinces
1. MEDITERRANEAN
2. SOUTHEAST ANATOLIA
3. EAGEAN REGION
4. NORTHEAST ANATOLIA
5. MIDDLE ANATOLIA
6. WEST BLACK SEA
7. WEST ANATOLIA
8. EAST BLACK SEA
9. WEST MARMARA
10. MIDDLE EAST ANATOLIA
11. ISTANBUL
12. EAST MARMARA
Wednesday, February
3, 2016
İstanbul
Region
West
Marmara
Region
Aegean
Region
East
Marmara
West
Anatolia
Region
Mediterranean
Region
Anatolia
Region
West Black
Sea Region
East Black
Sea Region
Northeast
Anatolia
Region
East
Anatolia
Region
Southea
st
Anatoli
a
İstanbul
(Subregion)
Tekirdağ
(Subregion)
İzmir
(Subregion)
Bursa
(Subregion)
Ankara
(Subregion)
Antalya
(Subregion)
Kırıkkale
(Subregion)
Zonguldak
(Subregion)
Trabzon
(Subregion)
Erzurum
(Subregion)
Malatya
(Subregion)
Gaziant
ep
(Subreg
ion)
Edirne
Aydın
(Subregion)
Eskişehir
Konya
(Subregion)
Isparta Aksaray Karabük Ordu Erzincan Elazığ
Adıyam
an
Kırlareli Denizli Bilecik Karaman Burdur Niğde Bartın Giresun Bayburt Bingöl Kilis
Balıkesir
(Subregion)
Muğla
Kocaeli
(Subregion)
Adana
(Subregion)
Nevşehir
Kastamonu
(Subregion)
Rize
Ağrı
(Subregion)
Dersim
Şanlıurf
a
(Subreg
ion)
Çanakkale
Manisa
(Subregion)
Sakarya Mersin Kırşehir Çankırı Artvin Kars
Van
(Subregion)
Diyarba
kır
A.Karahisar Düzce
Hatay
(Subregion)
Kayseri
(Subregion)
Sinop Gümüşhane Iğdır Muş
Mardin
(Subreg
ion)
Kütahya Bolu Kahramanmaraş Sivas
Samsun
(Subregion)
Ardahan Bitlis Batman
Uşak Yalova Osmaniye Yozgat Tokat Hakkari Şırnak
Çorum Siirt
Amasya
1 Province 5 Province 8 Province 8 Province 3 Province 8 Province 8 Province 10 Province 6 Province 7 Province 8 Province
9
Provinc
e
Graphical DataMining Analysis with
FINTURK Sectoral Loans Dataset
• Real Time Interactive Data Management for
• Effect and Response Analysis
Technique:
• Graphical DataMining using #ggplot2
Graphical Package of #R Software
• Graphical DataMining will be the dominant
anlysis technique of the future
Styles of Graphs
• For brevity we apply three types off ggplot2
graphical styles with ggplot2 geoms with this
report
1. Densityplot with geom_density()
2. Violinplot with geom_violin()
3. Facetplot with facet_grid()
• Logarithmic scale leads a more stable density
formations for financial data.
Description of Density Graphs
• Density Graphs are the
continuous version of
Histograms They plot a
single numerical variable
against their frequency.
• We can detect single or
multiple peaks of density
graphs and pinpoint the
effective factors.
• On the other hand
soperposing density graphs
acording the factors with
different colors provide us
with information of the
effect of the factors
Description of Violin Graphs
• Violin Graphs can be
seen as two-
dimensional density
graphs
• Axis of the violin
represents the median
of the free variable
• Through the median of
X-axis Y-density graph
occurs with mirror copy
Mushroom, Pottery and Bottle Risk
Profiles
• Violin Graphs comes
with Mushroom, Pottery
and Bottle formations
• Mushroom formation
represents a risk
concentration on hig
order values of financial
data
• Pottery means risk on
the medium order
• and the bottle menas risk
on the lower orders
Description of Power Law Graphs
• When double Log scale
applied Power Law
analysis is a by product
• LogY = a.LogX + b
• a is the Risk Measure
• And it is the same for
every level of X and Y
• Power Law means that
risk is scale free
Description of Facet Graphs
• Facet graphs of ggplot2
package can show us
3-dimensional graphs
distributed according 3
factors in matrix form.
• In which we can see
the anomalies occurs on
which year and which
region and which
period.
Risk Profiles
Graphical Dataminig of the Profiles of
Default Mortgage Risks for Whole
Turkey, 12 NUTS Regions and 81 Cities
(This version covers only Whole Turkey and
West Anatolia Region)
Risk Profiles for Whole Turkey
Here we investigate Mortgage Loans
versus Default Mortgage Loans for
Whole Turkey according to region, year
and period factors.
X and Y Scales used is Log10
Density Graphs of Mortgage Loans
by Nuts Regions of Turkey
Faceted Density Graphics of Mortgage Loans
by Quarters
Wednesday, February
3, 2016
Violin Graphs of Defaulted Mortgage Loans
by Nuts Regions of Turkey
Faceted Violin Graphics of Defaulted Mortgage Loans
by Quarters
Wednesday, February
3, 2016
Power Law Risk Analysis of Mortgage Loans
by Nuts Regions of Turkey
Wednesday, February
3, 2016
Faceted Power Law Analysis of Mortgage Loans
by Quarters
Wednesday, February
3, 2016
Risk Profiles for
W. Anatolia Region
Here we investigate Mortgage Loans
versus Default Mortgage Loans for
West Anatolian Region according to
cities, year and period factors.
X and Y Scales used is Log10
Density Graphs of Mortgage Loans
by Cities of West Anatolia
Wednesday, February
3, 2016
Faceted Density Graphics of Mortgage Loans
by Quarters
Wednesday, February
3, 2016
Violin Graphs of Defaulted Mortgage Loans by
Cities of West Anatolia
Faceted Violin Graphics of Defaulted Mortgage Loans
by Quarters
Wednesday, February
3, 2016
Power Law Risk Analysis of Mortgage Loans
by Cities of West Anatolia
Wednesday, February
3, 2016
Faceted Power Law Analysis of Mortgage Loans
by Quarters
Conclusion
• Graphical Datamining applied on this
factorized data and financial anomalies
detected acording to time and space factors.
• We observes apparently obvious differences
of risk profiles affected by these factors
• It is quite clear that pictures tells more stories
than numbers
• This is only an abridged version of the whole
report for 12 Nuts Regions
Contact
@DataLabTR
@GeoLabTR
@TRUserGroup
@CORTEXIEN
@Riskonometri
@Riskonomi
@datanalitik
@Riskanalitigi
@RiskLabTurkey
@fatma_cinar_ftm
tr.linkedin.com/in/fatmacinar
tr.linkedin.com/pub/kutlu-merih
tr.linkedin.com/in/coskunkucukozmen
www.datalabtr.com
kutlu.merih@datalabtr.com
kutmerih@gmail.com
kutlu@merih.net
coskun.kucukozmen@ieu.edu.tr
http://www.ieu.edu.tr/tr
coskunkucukozmen@gmail.com
http://www.coskunkucukozmen.com
fatma.cinar@datalabtr.com
fatma.cinar@spk.gov.tr
http://www.spk.gov.tr/
http://www.riskonomi.com
Resources
• Küçüközmen, C. C. Ve Çınar F., (2014). “Finansal Karar Süreçlerinde Grafik-
Datamining Analizi”, TROUGBI/DW SIG, Nisan 2014 İstanbul,
http://www.troug.org/?p=684
• Küçüközmen, C. C. ve Çınar F., (2014). “Görsel Veri Analizinde Devrim” Söyleşi,
Ekonomik Çözüm, Temmuz 2014, http://ekonomik-cozum.com.tr/gorsel-veri-
analizinde-devrim-mi.html.
• Küçüközmen, C. C. ve Merih K., (2014). “Görsel Teknikler Çağı" Söyleşi, Ekonomik
Çözüm, Temmuz 2014, http://ekonomik-cozum.com.tr/gorsel-teknikler-cagi.html
• Küçüközmen, C. C. and Çınar F., (2014). “Banking Sector Analysis of Izmir
Province: A Graphical Data Mining Approach”, Submitted to the 34th National
Conference for Operations Research and Industrial Engineering (YAEM 2014), Görükle
Campus of Uludağ University in Bursa, Turkey on 25-27 June 2014.
• Küçüközmen, C. C. and Çınar F., (2014). “New Sectoral Incentive System and
Credit Defaults: Graphic-Data Mining Analysis”, Submitted to the ICEF 2014
Conference, Yıldız Technical University in İstanbul, Turkey on 08-09 Sep. 2014.
• Küçüközmen, C. C. and Çınar F., (2015). “Visual Anaysis of Electricity Demand
Energy Dashboard Graphics” Submitted to the 5th Multinational Energy and Value
Conference May 7-9, 2015 Kadir Has University in İstanbul, Turkey
• Merih, K. C. and Çınar F., (2015). “Sectoral Loans Default Chart of Turkey ”, Submitted to
35th National Operations Research and Industrial Engineering Congress (ORIE 2015) 09-
11,September, 2015,Middle East Technical University, Ankara, Turkey

Risk Report (abridged)

  • 1.
    Fatma ÇINAR, MBACapital Markets Board of Turkey e-mail: fatma.cinar@spk.gov.tr fatma.cinar@datalabtr.com @fatma_cinar_ftm @DataLabTR C. Coşkun KÜÇÜKÖZMEN, PhD e-mail: coskun.kucukozmen@ieu.edu.tr @ckucukozmen @RiskLabTurkey Kutlu MERİH, PhD e-mail: kutlu.merih@datalabtr.com kutmerih@gmail.com @cortexien www.datalabtr.com https://www.riskonomi.com RISK MANAGEMENT WITH DATA VISULISATION RISK REPORT (abridged)
  • 2.
    Description of TheReport This a abridged Sample Report of Defaulted Mortgage Loans for the 12 NUTS Sectors and 81 cities of Turkey with 2012-2014 time span Covers only Whole Turkey and West Anatolia Region Real Report covers all the 12 NUTS Regions and 81 Cities of Turkey With 2010-2015 time span
  • 3.
    Purpose of theReport • With this study we investigate NUTS 12 Regions credit loans performations by Graphical Datamining Analysis technique with a suitable software developed by us. • This technique is submitted various OR and Finance congress • Dataset are factorized according to cities and years, sectorals and financial periods factors. • Sample Report Covers Periods: 2012-2014 accounts.
  • 4.
    Source of TheData • We downloaded FINTURK dataset from the site of BRSA and anotated it by NUTS factors. • Our software read this data from an excel file with the name of “dataset” • From now on “dataset” means our improvised NUTS Credit Loans FINTURK data
  • 5.
    Description of TheAnalytics • Data: BRSA* and NUTS of Turkey (Nomenclature of Territorial Units for Statistics, NUTS) • Dataset: NUTS Region Investment Promotion and 3 account period Graphical Datamining Analysis of FINTURK of BRSA • Period: 2012-2014 Accounts • Dataset are factorized according to year, sector, quarter and region factors. • Graphical Datamining and Data Visualisation applied on this factorized data. *BRSA: Banking Regulations and Supervisison Agency
  • 6.
    Fields : names(dataset) •names(dataset) • [1] "NYEAR" "SYEAR" "QUARTERS" • [4] "CITY" "CITYCODE" "NREGION" • [7] "REGION" "NUTS3CODE" "NUTS2CODE" • [10] "NUTS1CODE" "TRNUTS1REGION" "NUTS1REGION" • [13] "TRGROUP" "SECTORAL" "CASHLOANS" • [16] "NONCASHLOANS" "TOTALCASHLOANS" "AUTO" • [19] "MORTGAGE" "OVERDRAFTACCOUNT" "CREDITCARDS" • [22] "FOOD" "BUILDING" "MINERALS " • [25] "FINANCIAL" "TEXTILE" "WHOSESALE " • [28] "TOURISM" "AGRICULTURE" "ENERGY" • [31] "MARITIME" "OTHERCONSUMER" "DEFRECEIVABLE" • [34] "DEFCREDITCARDS" "DEFAUTO" "DEFMORTGAGE" • [37] "DEFOTHERCONSUMER" "DEFFOOD" "DEFBUILDING" • [40] "DEFMINERALS" "DEFFINANCIAL" "DEFTEXTILE" • [43] "DEFWHOLESALE " "DEFTOURISM" "DEFAGRICULTURE" • [46] "DEFENERGY" "DEFMARITIME" "NONCASHFOOD" • [49] "NONCAHBUILDING" "NONCASHMINERALS" "NONFINANCIAL" • [52] "NONCASHTEXTILE" "NONCASHWHOLESALE " "NONCASHTOURISM" • [55] "NONCASHAGRICULTURE“ "NONCASHENERGY" "NONCASHMARITIME"
  • 7.
    NUTS of Turkey (Nomenclatureof Territorial Units for Statistics, NUTS) Wednesday, February 3, 2016
  • 8.
    NUTS-1:12 Regions ofTurkey • NUTS-1: 12 Regions • NUTS-2: 26 Subregions • NUTS-3: 81 Provinces 1. MEDITERRANEAN 2. SOUTHEAST ANATOLIA 3. EAGEAN REGION 4. NORTHEAST ANATOLIA 5. MIDDLE ANATOLIA 6. WEST BLACK SEA 7. WEST ANATOLIA 8. EAST BLACK SEA 9. WEST MARMARA 10. MIDDLE EAST ANATOLIA 11. ISTANBUL 12. EAST MARMARA
  • 9.
    Wednesday, February 3, 2016 İstanbul Region West Marmara Region Aegean Region East Marmara West Anatolia Region Mediterranean Region Anatolia Region WestBlack Sea Region East Black Sea Region Northeast Anatolia Region East Anatolia Region Southea st Anatoli a İstanbul (Subregion) Tekirdağ (Subregion) İzmir (Subregion) Bursa (Subregion) Ankara (Subregion) Antalya (Subregion) Kırıkkale (Subregion) Zonguldak (Subregion) Trabzon (Subregion) Erzurum (Subregion) Malatya (Subregion) Gaziant ep (Subreg ion) Edirne Aydın (Subregion) Eskişehir Konya (Subregion) Isparta Aksaray Karabük Ordu Erzincan Elazığ Adıyam an Kırlareli Denizli Bilecik Karaman Burdur Niğde Bartın Giresun Bayburt Bingöl Kilis Balıkesir (Subregion) Muğla Kocaeli (Subregion) Adana (Subregion) Nevşehir Kastamonu (Subregion) Rize Ağrı (Subregion) Dersim Şanlıurf a (Subreg ion) Çanakkale Manisa (Subregion) Sakarya Mersin Kırşehir Çankırı Artvin Kars Van (Subregion) Diyarba kır A.Karahisar Düzce Hatay (Subregion) Kayseri (Subregion) Sinop Gümüşhane Iğdır Muş Mardin (Subreg ion) Kütahya Bolu Kahramanmaraş Sivas Samsun (Subregion) Ardahan Bitlis Batman Uşak Yalova Osmaniye Yozgat Tokat Hakkari Şırnak Çorum Siirt Amasya 1 Province 5 Province 8 Province 8 Province 3 Province 8 Province 8 Province 10 Province 6 Province 7 Province 8 Province 9 Provinc e
  • 10.
    Graphical DataMining Analysiswith FINTURK Sectoral Loans Dataset • Real Time Interactive Data Management for • Effect and Response Analysis Technique: • Graphical DataMining using #ggplot2 Graphical Package of #R Software • Graphical DataMining will be the dominant anlysis technique of the future
  • 11.
    Styles of Graphs •For brevity we apply three types off ggplot2 graphical styles with ggplot2 geoms with this report 1. Densityplot with geom_density() 2. Violinplot with geom_violin() 3. Facetplot with facet_grid() • Logarithmic scale leads a more stable density formations for financial data.
  • 12.
    Description of DensityGraphs • Density Graphs are the continuous version of Histograms They plot a single numerical variable against their frequency. • We can detect single or multiple peaks of density graphs and pinpoint the effective factors. • On the other hand soperposing density graphs acording the factors with different colors provide us with information of the effect of the factors
  • 13.
    Description of ViolinGraphs • Violin Graphs can be seen as two- dimensional density graphs • Axis of the violin represents the median of the free variable • Through the median of X-axis Y-density graph occurs with mirror copy
  • 14.
    Mushroom, Pottery andBottle Risk Profiles • Violin Graphs comes with Mushroom, Pottery and Bottle formations • Mushroom formation represents a risk concentration on hig order values of financial data • Pottery means risk on the medium order • and the bottle menas risk on the lower orders
  • 15.
    Description of PowerLaw Graphs • When double Log scale applied Power Law analysis is a by product • LogY = a.LogX + b • a is the Risk Measure • And it is the same for every level of X and Y • Power Law means that risk is scale free
  • 16.
    Description of FacetGraphs • Facet graphs of ggplot2 package can show us 3-dimensional graphs distributed according 3 factors in matrix form. • In which we can see the anomalies occurs on which year and which region and which period.
  • 17.
    Risk Profiles Graphical Dataminigof the Profiles of Default Mortgage Risks for Whole Turkey, 12 NUTS Regions and 81 Cities (This version covers only Whole Turkey and West Anatolia Region)
  • 18.
    Risk Profiles forWhole Turkey Here we investigate Mortgage Loans versus Default Mortgage Loans for Whole Turkey according to region, year and period factors. X and Y Scales used is Log10
  • 19.
    Density Graphs ofMortgage Loans by Nuts Regions of Turkey
  • 20.
    Faceted Density Graphicsof Mortgage Loans by Quarters Wednesday, February 3, 2016
  • 21.
    Violin Graphs ofDefaulted Mortgage Loans by Nuts Regions of Turkey
  • 22.
    Faceted Violin Graphicsof Defaulted Mortgage Loans by Quarters Wednesday, February 3, 2016
  • 23.
    Power Law RiskAnalysis of Mortgage Loans by Nuts Regions of Turkey Wednesday, February 3, 2016
  • 24.
    Faceted Power LawAnalysis of Mortgage Loans by Quarters Wednesday, February 3, 2016
  • 25.
    Risk Profiles for W.Anatolia Region Here we investigate Mortgage Loans versus Default Mortgage Loans for West Anatolian Region according to cities, year and period factors. X and Y Scales used is Log10
  • 26.
    Density Graphs ofMortgage Loans by Cities of West Anatolia Wednesday, February 3, 2016
  • 27.
    Faceted Density Graphicsof Mortgage Loans by Quarters Wednesday, February 3, 2016
  • 28.
    Violin Graphs ofDefaulted Mortgage Loans by Cities of West Anatolia
  • 29.
    Faceted Violin Graphicsof Defaulted Mortgage Loans by Quarters Wednesday, February 3, 2016
  • 30.
    Power Law RiskAnalysis of Mortgage Loans by Cities of West Anatolia Wednesday, February 3, 2016
  • 31.
    Faceted Power LawAnalysis of Mortgage Loans by Quarters
  • 32.
    Conclusion • Graphical Dataminingapplied on this factorized data and financial anomalies detected acording to time and space factors. • We observes apparently obvious differences of risk profiles affected by these factors • It is quite clear that pictures tells more stories than numbers • This is only an abridged version of the whole report for 12 Nuts Regions
  • 33.
  • 34.
    Resources • Küçüközmen, C.C. Ve Çınar F., (2014). “Finansal Karar Süreçlerinde Grafik- Datamining Analizi”, TROUGBI/DW SIG, Nisan 2014 İstanbul, http://www.troug.org/?p=684 • Küçüközmen, C. C. ve Çınar F., (2014). “Görsel Veri Analizinde Devrim” Söyleşi, Ekonomik Çözüm, Temmuz 2014, http://ekonomik-cozum.com.tr/gorsel-veri- analizinde-devrim-mi.html. • Küçüközmen, C. C. ve Merih K., (2014). “Görsel Teknikler Çağı" Söyleşi, Ekonomik Çözüm, Temmuz 2014, http://ekonomik-cozum.com.tr/gorsel-teknikler-cagi.html • Küçüközmen, C. C. and Çınar F., (2014). “Banking Sector Analysis of Izmir Province: A Graphical Data Mining Approach”, Submitted to the 34th National Conference for Operations Research and Industrial Engineering (YAEM 2014), Görükle Campus of Uludağ University in Bursa, Turkey on 25-27 June 2014. • Küçüközmen, C. C. and Çınar F., (2014). “New Sectoral Incentive System and Credit Defaults: Graphic-Data Mining Analysis”, Submitted to the ICEF 2014 Conference, Yıldız Technical University in İstanbul, Turkey on 08-09 Sep. 2014. • Küçüközmen, C. C. and Çınar F., (2015). “Visual Anaysis of Electricity Demand Energy Dashboard Graphics” Submitted to the 5th Multinational Energy and Value Conference May 7-9, 2015 Kadir Has University in İstanbul, Turkey • Merih, K. C. and Çınar F., (2015). “Sectoral Loans Default Chart of Turkey ”, Submitted to 35th National Operations Research and Industrial Engineering Congress (ORIE 2015) 09- 11,September, 2015,Middle East Technical University, Ankara, Turkey