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Outline 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