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Data Mining: WEKA
The University of Iowa
Intelligent Systems Laboratory
•Preprocessing and “arff” files
•Filters, classifiers, and visualization
•10-fold
10 f ld cross-validation
lid i
•Training and testing
•Quality measurements
•Interpretation of results
The University of Iowa
Intelligent Systems Laboratory
Data Sets
Data Mining Procedures
• Prepare the data into desired formats
• Preprocess the data if necessary
• Select different algorithms based on
application or domain expertise
• Evaluate the results and repeat experiments
again if necessary
The University of Iowa
Intelligent Systems Laboratory
The University of Iowa
Arff file
@ relatio n
@ attribute
@ attribute
@ attribute
@ attribute
@ attribute
@ attribute
The University of Iowa
w eather
No
o utlo ok
tem perature
hu m idity
w indy
play
Intelligent Systems Laboratory
Arff file
real
{sunny,o vercast,rainy}
real
real
{TRU E ,FALSE }
{yes,no}
Intelligent Systems Laboratory
The University of Iowa
Intelligent Systems Laboratory
1
Arff file
The University of Iowa
Intelligent Systems Laboratory
WEKA
The University of Iowa
Intelligent Systems Laboratory
Arff file
The University of Iowa
WEKA Explorer
The University of Iowa
WEKA
The University of Iowa
Intelligent Systems Laboratory
Intelligent Systems Laboratory
Intelligent Systems Laboratory
WEKA
The University of Iowa
Intelligent Systems Laboratory
2
Parameter Distribution
The University of Iowa
Intelligent Systems Laboratory
Filters
The University of Iowa
Filters
The University of Iowa
Filters
Intelligent Systems Laboratory
The University of Iowa
Filters
The University of Iowa
Intelligent Systems Laboratory
Intelligent Systems Laboratory
Filters
Intelligent Systems Laboratory
The University of Iowa
Intelligent Systems Laboratory
3
Filters
The University of Iowa
Classifier
Intelligent Systems Laboratory
The University of Iowa
Classifier
The University of Iowa
Intelligent Systems Laboratory
Classifiers
The University of Iowa
Classifiers
The University of Iowa
Intelligent Systems Laboratory
Intelligent Systems Laboratory
Intelligent Systems Laboratory
Classifiers
The University of Iowa
Intelligent Systems Laboratory
4
Decision Tree
The University of Iowa
Intelligent Systems Laboratory
Decision Tree
The University of Iowa
Decision Tree
The University of Iowa
Intelligent Systems Laboratory
Decision Tree
The University of Iowa
Decision Tree
The University of Iowa
Intelligent Systems Laboratory
Intelligent Systems Laboratory
Intelligent Systems Laboratory
Decision Tree
The University of Iowa
Intelligent Systems Laboratory
5
Classifier: PART
The University of Iowa
Intelligent Systems Laboratory
Classifier: PART
The University of Iowa
Intelligent Systems Laboratory
Neural Networks
The University of Iowa
Intelligent Systems Laboratory
Classifier: PART
The University of Iowa
Intelligent Systems Laboratory
Classifier: PART
The University of Iowa
Intelligent Systems Laboratory
Neural Networks
The University of Iowa
Intelligent Systems Laboratory
6
Neural Networks
The University of Iowa
Intelligent Systems Laboratory
Association Rules
The University of Iowa
Intelligent Systems Laboratory
Association Rules
The University of Iowa
Association Rules
The University of Iowa
Visualization
The University of Iowa
Intelligent Systems Laboratory
Intelligent Systems Laboratory
Intelligent Systems Laboratory
Visualization
The University of Iowa
Intelligent Systems Laboratory
7
Clustering
The University of Iowa
Intelligent Systems Laboratory
Clustering
The University of Iowa
Intelligent Systems Laboratory
Test Data Analysis
The University of Iowa
Intelligent Systems Laboratory
Clustering
The University of Iowa
Intelligent Systems Laboratory
Test Data Analysis
The University of Iowa
Intelligent Systems Laboratory
Test Data Analysis
The University of Iowa
Intelligent Systems Laboratory
8
Test Data Analysis
The University of Iowa
Intelligent Systems Laboratory
Test Data Analysis
The University of Iowa
Intelligent Systems Laboratory
Test Data Analysis
The University of Iowa
Intelligent Systems Laboratory
Test Data Analysis
The University of Iowa
Intelligent Systems Laboratory
Test Data Analysis
The University of Iowa
Intelligent Systems Laboratory
Test Data Analysis
The University of Iowa
Intelligent Systems Laboratory
9
Knowledge Flow: Evaluation
The University of Iowa
Intelligent Systems Laboratory
Knowledge Flow: Data files
The University of Iowa
Intelligent Systems Laboratory
Knowledge Flow: Filters
The University of Iowa
Intelligent Systems Laboratory
Knowledge Flow: Visualization
The University of Iowa
Intelligent Systems Laboratory
Knowledge Flow: Classifiers
The University of Iowa
Intelligent Systems Laboratory
Knowledge Flow: Example
The University of Iowa
Intelligent Systems Laboratory
10
Knowledge Flow: Example
The University of Iowa
Intelligent Systems Laboratory
Knowledge Flow: Example
The University of Iowa
Intelligent Systems Laboratory
Knowledge Flow: Example
The University of Iowa
Intelligent Systems Laboratory
Knowledge Flow: Example
The University of Iowa
Intelligent Systems Laboratory
Knowledge Flow: Example
The University of Iowa
Intelligent Systems Laboratory
Knowledge Flow: Example
The University of Iowa
Intelligent Systems Laboratory
11
Knowledge Flow: Example
The University of Iowa
Intelligent Systems Laboratory
Knowledge Flow: Example
The University of Iowa
Intelligent Systems Laboratory
Knowledge Flow: Example
The University of Iowa
Intelligent Systems Laboratory
Knowledge Flow: Example
The University of Iowa
Intelligent Systems Laboratory
Knowledge Flow: Example
The University of Iowa
Intelligent Systems Laboratory
Knowledge Flow: Example
The University of Iowa
Intelligent Systems Laboratory
12
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