0
AN INTRODUCTION TO DATA
MINING WITH WEKA
BY OPEN MINER
WWW.OPEN-MINER.COM

Part 0 About Us
Instructors
2





Japan
Advance Institute of Science and
Technology

Computer Engineering


Computer Engineering

Ema...
Course Outline
3



1st day
 Introduction to data mining
 Introduction to Weka
OPEN MINER
 Preprocess
www.open-miner.c...
Course Outline (cont’)
4



2nd day

 Regression





& Classification Techniques
K-Nearest neighbors
Neural Networks...
AN INTRODUCTION TO DATA
MINING WITH WEKA
BY OPEN MINER
WWW.OPEN-MINER.COM

Part I Introduction to Data Mining
What is data mining?
6



“The exploration and analysis of large
quantities of data in order to discover
meaningful patte...
Loyalty Cards
7

OPEN MINER
www.open-miner.com
www.facebook.com/openmin
er
Open Miner Intelligence : http://www.open-miner...
Loyalty Cards (2)
8

Tesco
Lotus
Club card
08/2552

BigC
BigCard
09/2552

Carrefou
r
I wish
2550

TOPS

OPEN MINER
www.ope...
Summary
9













OPEN MINER
www.open-miner.com

Social network : facebook, twitter

protein sequence, gene

...
AN INTRODUCTION TO DATA
MINING WITH WEKA
BY OPEN MINER
WWW.OPEN-MINER.COM

Part II

Cross Reference Industry Standard Proc...
CRISP-DM
11



CRoss-Industry Standard Process for Data
Mining (CRISP-DM)


OPEN MINER
www.open-miner.com

DaimlerChrysl...
Data Mining Workflow
12

: http://openminer.com/2009/11/03/introduction-datamining/


Business
Understanding +
Data
Under...
CRISP Example
13



( http://www.nectec.or.th/NTJ/No11/No11.php )





OPEN MINER
www.open-miner.com

www.facebook.com...
CRISP Example (5)
14



Stu_c
ode

Sex

Addr GPA
ess

370580
63

Male

Bangk
ok

Data Understanding


2535-2542

2.3

OP...
CRISP Example (6)
15

Old

New

Stu_c
ode

Sex

Addr GPA
ess

Stu_c
ode

Sex

Addr GPA
ess

370580
63

Male

Bangk
ok

370...
Data Mining Concepts and
Techniques
16

Supervised
learning

Unsupervised
learning





Classification





Clusterin...
Data Mining Software
17



Commercial Software


SAS® Enterprise Miner



Open source software
or Freeware






Wek...
Data Mining Software (2)
18



Weka

OPEN MINER
www.open-miner.com
www.facebook.com/openmin
er
Open Miner Intelligence : ...
AN INTRODUCTION TO DATA
MINING WITH WEKA
BY OPEN MINER
WWW.OPEN-MINER.COM

Part III Introduction to Weka
What is Weka ?
20



Weka
 Waikato Environment for Knowledge Analysis

open source
Data Mining

!!!

Java
 Windows
...
Download Weka
21



http://www.cs.waikato.ac.nz/ml/weka/

OPEN MINER
www.open-miner.com
www.facebook.com/openmin
Java
er
...
Weka Explorer
22

Tab
data mining

OPEN MINER
Workspace:
Weka
www.open-miner.com
Explorer
www.facebook.com/openmin
er
Stat...
AN INTRODUCTION TO
DATA MINING WITH WEKA
BY OPEN MINER
WWW.OPEN-MINER.COM

Part IV Preprocess
Agenda
24



(instance)
(attribute)




Weka








OPEN MINER
www.open-miner.com
CSV
ARFF

Preprocess Data

Weka...
Load data into Weka (2)
25



input

Weka

OPEN MINER
(Databas
(Internet
(Generat
File)
e)
www.open-miner.com
)
e Data)
C...
Lab 4-1: Generate CSV file
26

:



Weka

CSV

Excel

1:

OPEN MINER
www.open-miner.com


www.facebook.com/openmin
Note ...
Weka & MySQL (4)
27



jdbc:mysql://localhost:3306/weka_cour
se



URL :
URL
database server
Click
User

OPEN MINER
www....
28

Replace missing values in
Weka
Choose





filters
unsupervised
attribute
ReplaceMissingValues

OPEN MINER
www.open-...
AN INTRODUCTION TO
DATA MINING WITH WEKA

BY OPEN MINER
WWW.OPEN-MINER.COM

Part V Regression & Classification
Agenda
30

(Regression)
(Data classification)








training, testing

OPEN MINER
www.open-miner.com

www.facebook....
What is classification?
31

OPEN MINER
www.open-miner.com
www.facebook.com/openmin
: er
?

Open Miner Intelligence : http:...
Example: Classification (3)
32



Model



training data
class

OPEN MINER
tree model
www.open-miner.com

 Decision

≥...
Example: Classification (4)
33



Unseen data
(class)



OPEN MINER
134.86
96.01
158.83
www.open-miner.com
www.facebook....
Classification Steps (3)
34
34


(classification
model building)
1
1
0



(Training
data)

OPEN MINER
www.open-miner.com...
Classification in Weka (cont’)
35

tab Classify






OPEN MINER
www.open-miner.com


www.facebook.com/openmin

er
Op...
1: Classifier
36

classification





Bayes

OPEN MINER(probability)
www.open-miner.com
Functions




www.facebook.com...
Lab 5-2: German Credit Card
37



Business Understanding






OPEN MINER system)
(decision support
www.open-miner.com...
AN INTRODUCTION TO
DATA MINING WITH WEKA

BY OPEN MINER
WWW.OPEN-MINER.COM

Part VI Clustering
Segmentation
39














OPEN MINER
(geographic)
www.open-miner.com
(demographic)


www.facebook.com/openmi...
Data clustering
40

(clustering)










OPEN MINER
www.open-miner.com
(cluster)

www.facebook.com/openmin
(unsuper...
Clustering in Weka (cont’)
41

tab Cluster






OPEN MINER
www.open-miner.com
www.facebook.com/openmin

er
Open Miner...
42

Example1 : Clustering bank
data
(bank)



id

ag
e

sex

region

inco marri childr
save_a current_ mortga pe
car
me e...
AN INTRODUCTION TO
DATA MINING WITH WEKA

BY OPEN MINER
WWW.OPEN-MINER.COM

Part VII Association Rules
Market Basket Analysis
44

supermarket






OPEN MINER
www.open-miner.com
?

www.facebook.com/openmin
er
Open Miner I...
Data from point-of-sale (4)
45

POS database

Transaction- time

Product

01-13-2009 20:04

Apple

01-13-2009 20:04

Beer
...
46

Association Rules in Weka
(cont’)
tab Associate





OPEN MINER
www.open-miner.com




www.facebook.com/openmin
er...
Lab 7-1: Market Basket
47



Business Understanding
CRM





OPEN MINER
Data Understanding
www.open-miner.com
1,000


...
AN INTRODUCTION TO
DATA MINING WITH WEKA

BY OPEN MINER
WWW.OPEN-MINER.COM

Part VIII Command line & Integrate System
Weka in command line
49




Run >

Weka
cmd

DOS

DOS (

)




OPEN MINER
www.open-miner.com
www.facebook.com/openmin
...
50

Lab8-2: Weka in Java Program
(2)
Weka Explorer







OPEN MINER
compile
www.open-miner.com
javac -classpath “C:Pro...
AN INTRODUCTION TO
DATA MINING WITH WEKA

BY OPEN MINER
WWW.OPEN-MINER.COM

Part IX Knowledge Flow
Weka KnowledgeFlow
52



component
workflow

Weka

OPEN MINER
www.open-miner.com
www.facebook.com/openmin
er
Open Miner I...
Example: Knowledge flow (7)
53




component TextViewer
Layout

ClassifierPerformanceEvaluator
TextViewer

Visualization...
Contact Us
54





E-mail
 siriwont@gmail.com



Website
 http://www.open-miner.com



Google Buzz
 http://www.goog...
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Transcript of "Introduction to data mining with Weka by OPEN MINER"

  1. 1. AN INTRODUCTION TO DATA MINING WITH WEKA BY OPEN MINER WWW.OPEN-MINER.COM Part 0 About Us
  2. 2. Instructors 2   Japan Advance Institute of Science and Technology  Computer Engineering  Computer Engineering Email: siriwont@gmail.com, openminer@gmail.c om Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA 
  3. 3. Course Outline 3  1st day  Introduction to data mining  Introduction to Weka OPEN MINER  Preprocess www.open-miner.com  Regression & Classification Techniques www.facebook.com/openmin  Linear Regression  Decision tree er Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  4. 4. Course Outline (cont’) 4  2nd day  Regression    & Classification Techniques K-Nearest neighbors Neural Networks Support Vector Machines (SVM) OPEN MINER  Clustering www.open-miner.com Association rule discovery www.facebook.com/openmin  JAVA + WEKA  PHP + WEKA er  Knowledge Flow  Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  5. 5. AN INTRODUCTION TO DATA MINING WITH WEKA BY OPEN MINER WWW.OPEN-MINER.COM Part I Introduction to Data Mining
  6. 6. What is data mining? 6  “The exploration and analysis of large quantities of data in order to discover meaningful patterns and rules” – Data Mining Techniques (2nd Edition) OPEN MINER(patterns) (relation) www.open-miner.com  www.facebook.com/openmin “Extraction of interesting (noner trivial, previously, unknown and potential  useful) information from data in large databases” – Data Mining Concepts &Techniques (2 Edition) Open Miner Intelligence : http://www.open-miner.com nd AN INTRODUCTION TO DATA MINING WITH WEKA
  7. 7. Loyalty Cards 7 OPEN MINER www.open-miner.com www.facebook.com/openmin er Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  8. 8. Loyalty Cards (2) 8 Tesco Lotus Club card 08/2552 BigC BigCard 09/2552 Carrefou r I wish 2550 TOPS OPEN MINER www.open-miner.com SPOT ~2548 www.facebook.com/openmin personal er positioning shopping Reference : list Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  9. 9. Summary 9         OPEN MINER www.open-miner.com Social network : facebook, twitter protein sequence, gene Data mining www.facebook.com/openmin er  Open Miner Intelligence : http://www.open-miner.com  AN INTRODUCTION TO DATA MINING WITH WEKA
  10. 10. AN INTRODUCTION TO DATA MINING WITH WEKA BY OPEN MINER WWW.OPEN-MINER.COM Part II Cross Reference Industry Standard Process for Data Mining
  11. 11. CRISP-DM 11  CRoss-Industry Standard Process for Data Mining (CRISP-DM)  OPEN MINER www.open-miner.com DaimlerChrysler  SPSS  NCR www.facebook.com/openmin  Workflow data mining  6 er  Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  12. 12. Data Mining Workflow 12 : http://openminer.com/2009/11/03/introduction-datamining/  Business Understanding + Data Understanding + Data Preparation 80% OPEN MINER www.open-miner.com www.facebook.com/openmin er Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  13. 13. CRISP Example 13  ( http://www.nectec.or.th/NTJ/No11/No11.php )    OPEN MINER www.open-miner.com www.facebook.com/openmin er Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  14. 14. CRISP Example (5) 14  Stu_c ode Sex Addr GPA ess 370580 63 Male Bangk ok Data Understanding  2535-2542 2.3 OPEN MINER 10,000 370581 Male Songk 3.2 476,085 67 www.open-miner.com la   …. … … … 2  Sub_co … Grad www.facebook.com/openmin de e 370580 … C+er Stu_c ode 63 370580 … D 63 Open Miner Intelligence : http://www.open-miner.com   1 9 AN INTRODUCTION TO DATA MINING WITH WEKA
  15. 15. CRISP Example (6) 15 Old New Stu_c ode Sex Addr GPA ess Stu_c ode Sex Addr GPA ess 370580 63 Male Bangk ok 370580 63 Male Bangk ok 370581 67 …. 2.3 OPEN MINER Male Songk 3.2 370581 Male Songk www.open-miner.com la la Old) 67 … … … …. … … BAD GOO D (Ne … … Grad Stu_c Sub_co … www.facebook.com/openminGrad e ode de e 370580 … C+ er 370580 … Mediu Stu_c Sub_co ode de 63 370580 … D 63 Open Miner Intelligence : http://www.open-miner.com 63 m 370580 … Low 63 INTRODUCTION TO DATA MINING WITH WEKA AN
  16. 16. Data Mining Concepts and Techniques 16 Supervised learning Unsupervised learning   Classification    Clustering OPEN MINER www.open-miner.com   Associate www.facebook.com/openmin Regression er    Open Miner Intelligence : http://www.open-miner.com   AN INTRODUCTION TO DATA MINING WITH WEKA
  17. 17. Data Mining Software 17  Commercial Software  SAS® Enterprise Miner  Open source software or Freeware    Weka OPEN MINER www.open-miner.com Microsoft SQL Server RapidMiner DB2 Intelligent Miner 2008  www.facebook.com/openmin er  Open Miner Intelligence : http://www.open-miner.com KNIME (Konstanz Information Miner) AN INTRODUCTION TO DATA MINING WITH WEKA
  18. 18. Data Mining Software (2) 18  Weka OPEN MINER www.open-miner.com www.facebook.com/openmin er Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  19. 19. AN INTRODUCTION TO DATA MINING WITH WEKA BY OPEN MINER WWW.OPEN-MINER.COM Part III Introduction to Weka
  20. 20. What is Weka ? 20  Weka  Waikato Environment for Knowledge Analysis  open source Data Mining  !!!  Java  Windows  Linux  MAC OS  Weka  http://www.cs.waikato.ac.nz/ml/weka/ OPEN MINER www.open-miner.com www.facebook.com/openmin er Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  21. 21. Download Weka 21  http://www.cs.waikato.ac.nz/ml/weka/ OPEN MINER www.open-miner.com www.facebook.com/openmin Java er Open Miner Intelligence : http://www.open-miner.com Java Java AN INTRODUCTION TO DATA MINING WITH WEKA !!
  22. 22. Weka Explorer 22 Tab data mining OPEN MINER Workspace: Weka www.open-miner.com Explorer www.facebook.com/openmin er Status: Weka Open Miner Intelligence : http://www.open-miner.com Log: AN INTRODUCTION TO DATA MINING WITH WEKA
  23. 23. AN INTRODUCTION TO DATA MINING WITH WEKA BY OPEN MINER WWW.OPEN-MINER.COM Part IV Preprocess
  24. 24. Agenda 24  (instance) (attribute)   Weka      OPEN MINER www.open-miner.com CSV ARFF Preprocess Data Weka www.facebook.com/openmin er Outlier    Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  25. 25. Load data into Weka (2) 25  input Weka OPEN MINER (Databas (Internet (Generat File) e) www.open-miner.com ) e Data) CSV www.facebook.com/openmin ARF er F Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  26. 26. Lab 4-1: Generate CSV file 26 :  Weka CSV Excel 1: OPEN MINER www.open-miner.com  www.facebook.com/openmin Note : In sex attribute, value 0 = Female, 1 = Male, 2 = Others er customers.csv Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  27. 27. Weka & MySQL (4) 27  jdbc:mysql://localhost:3306/weka_cour se  URL : URL database server Click User OPEN MINER www.open-miner.com Server URL & port Database name www.facebook.com/openmin er Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  28. 28. 28 Replace missing values in Weka Choose   filters unsupervised attribute ReplaceMissingValues OPEN MINER www.open-miner.com    Apply www.facebook.com/openmin er  Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  29. 29. AN INTRODUCTION TO DATA MINING WITH WEKA BY OPEN MINER WWW.OPEN-MINER.COM Part V Regression & Classification
  30. 30. Agenda 30 (Regression) (Data classification)      training, testing OPEN MINER www.open-miner.com www.facebook.com/openmin er      Linear Regression Decision tree K-nearest neighbors Neural Network Support Vector Machines (SVM) Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  31. 31. What is classification? 31 OPEN MINER www.open-miner.com www.facebook.com/openmin : er ? Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  32. 32. Example: Classification (3) 32  Model   training data class OPEN MINER tree model www.open-miner.com  Decision ≥ 100 < 100 www.facebook.com/openmin Tree er  Evaluate Model Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  33. 33. Example: Classification (4) 33  Unseen data (class)  OPEN MINER 134.86 96.01 158.83 www.open-miner.com www.facebook.com/openmin er ? Open Miner Intelligence : http://www.open-miner.com ? AN INTRODUCTION TO DATA MINING WITH WEKA
  34. 34. Classification Steps (3) 34 34  (classification model building) 1 1 0  (Training data) OPEN MINER www.open-miner.com 2 0 A 1 B (Evaluate data) www.facebook.com/openmin er (evaluation) 1 1 3 2 A A 0 Unseen data 1 2 Open Miner Intelligence : http://www.open-miner.com 1 0 A AN INTRODUCTION TO DATA MINING WITH WEKA
  35. 35. Classification in Weka (cont’) 35 tab Classify    OPEN MINER www.open-miner.com  www.facebook.com/openmin  er Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  36. 36. 1: Classifier 36 classification   Bayes OPEN MINER(probability) www.open-miner.com Functions   www.facebook.com/openmin er Lazy     Open Miner Intelligence : http://www.open-miner.com  classification AN INTRODUCTION TO DATA MINING WITH WEKA
  37. 37. Lab 5-2: German Credit Card 37  Business Understanding    OPEN MINER system) (decision support www.open-miner.com Data Understanding www.facebook.com/openmin 600 er    GermanCreditBalance.arff Open Miner Intelligence CD : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  38. 38. AN INTRODUCTION TO DATA MINING WITH WEKA BY OPEN MINER WWW.OPEN-MINER.COM Part VI Clustering
  39. 39. Segmentation 39          OPEN MINER (geographic) www.open-miner.com (demographic)  www.facebook.com/openmin er (behavior)          Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  40. 40. Data clustering 40 (clustering)      OPEN MINER www.open-miner.com (cluster) www.facebook.com/openmin (unsupervised learning) er Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  41. 41. Clustering in Weka (cont’) 41 tab Cluster    OPEN MINER www.open-miner.com www.facebook.com/openmin  er Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  42. 42. 42 Example1 : Clustering bank data (bank)  id ag e sex region inco marri childr save_a current_ mortga pe car me ed en ct act ge p ID121 INNER_CI FEMALE NO 01 TY ID121 MALE TOWN YES 02 ID121 INNER_CI FEMALE YES 03 TY ID121 FEMALE TOWN YES 04 ID121 FEMALE RURAL YES 05 ID121 FEMALE TOWN YES 06 ID121 MALE RURAL NO 07 ID121 MALE TOWN YES 08 ID121 SUBURBA FEMALE YES 09 N Open Miner Intelligence : http://www.open-miner.com ID121 MALE TOWN YES NO NO NO NO OPEN MINER www.open-miner.com YE S YE S YES NO YES YES NO YES YES NO NO NO NO YES NO NO NO YES NO NO NO NO YES YES NO YES NO NO YES NO YES www.facebook.com/openmin er YE YES YES NO NO S YE NO NO NO NO S YEAN INTRODUCTION TO DATA MINING WITH WEKA YES YES NO NO
  43. 43. AN INTRODUCTION TO DATA MINING WITH WEKA BY OPEN MINER WWW.OPEN-MINER.COM Part VII Association Rules
  44. 44. Market Basket Analysis 44 supermarket     OPEN MINER www.open-miner.com ? www.facebook.com/openmin er Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  45. 45. Data from point-of-sale (4) 45 POS database Transaction- time Product 01-13-2009 20:04 Apple 01-13-2009 20:04 Beer TID Product OPEN MINER www.open-miner.com 01-13-2009 20:04 Cereal Diapers 1 Apple, Beer, Cereal, Diapers 2 01-13-2009 20:04 Apple, Beer, Diapers, Eggs 3 Beer, Eggs Transaction database www.facebook.com/openmin Beer 01-14-2009 11:30 Diapers er 01-14-2009 11:30 Apple 01-14-2009 11:30 01-14-2009 11:30 Eggs 01-15-2009 14:15 Beer 01-15-2009 14:15 Eggs Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  46. 46. 46 Association Rules in Weka (cont’) tab Associate   OPEN MINER www.open-miner.com   www.facebook.com/openmin er Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  47. 47. Lab 7-1: Market Basket 47  Business Understanding CRM   OPEN MINER Data Understanding www.open-miner.com 1,000  www.facebook.com/openmin 2 …… er    ……  AN INTRODUCTION TO DATA supermarket_basket_transactions_2005.arff MINING WITH WEKA Open Miner Intelligence : http://www.open-miner.com
  48. 48. AN INTRODUCTION TO DATA MINING WITH WEKA BY OPEN MINER WWW.OPEN-MINER.COM Part VIII Command line & Integrate System
  49. 49. Weka in command line 49   Run > Weka cmd DOS DOS ( )   OPEN MINER www.open-miner.com www.facebook.com/openmin er  Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  50. 50. 50 Lab8-2: Weka in Java Program (2) Weka Explorer    OPEN MINER compile www.open-miner.com javac -classpath “C:Program FilesWeka- -6weka.jar” testClassifier.java run java -classpath “C:Program FilesWeka- -6weka.jar;.” testClassifier www.facebook.com/openmin er Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  51. 51. AN INTRODUCTION TO DATA MINING WITH WEKA BY OPEN MINER WWW.OPEN-MINER.COM Part IX Knowledge Flow
  52. 52. Weka KnowledgeFlow 52  component workflow Weka OPEN MINER www.open-miner.com www.facebook.com/openmin er Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  53. 53. Example: Knowledge flow (7) 53   component TextViewer Layout ClassifierPerformanceEvaluator TextViewer Visualization text OPEN MINER www.open-miner.com www.facebook.com/openmin er Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
  54. 54. Contact Us 54   E-mail  siriwont@gmail.com  Website  http://www.open-miner.com  Google Buzz  http://www.google.com/profiles/openminer Open Miner Intelligence : http://www.open-miner.com AN INTRODUCTION TO DATA MINING WITH WEKA
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