decision_tree's Introduction
This project is incomplete due to poor planning, coordination, and understanding of the lab spec. The single program evaluate.py runs cross-validation on the files from the ELECTIONS dataset reporting the following statistics: - Parameters used (gain ratio, threshold, beta) - Confusion Matrix - Precision - Recall - F-measure - Overall accuracy - Average accuracy example run: python evaluate.py --gratio --threshold 0.0001 --beta 0.8 ../dataset/domain.xml ../dataset/tree01-1000-numbers.csv There is no random-forest classifier, it does not handle the IRIS dataset, and is unable to handle numerical attributes. It also does not write the model to a file, instead keeping building it in memory and using that for classification/cross-validation. The program evaluate.py can be run with the options described below to perform 10-fold cross-validation on generated decision trees. It reports various statistics based on the result of this cross validation. The required command line parameters for evaluate.py are: * [schema_file] xml file that contains the names for the elections dataset (domain.xml) * [data_file] csv file that contains data in numbers format (tree0X-XXXX-numbers.csv) The optional parameters that evaluate.py accepts are as follows: * [-h] for help * [--gratio] for using information gain-ratio else will use information gain. * [--threshold VALUE] for specifying the threshold value to be used (DEFAULT=0.01) * [--beta VALUE] for specifiying the value of beta to use when calculating f-measure (DEFAULT=1) * [--plot] to plot various values of threshold against information gain and information gain ratio. Note that this generates plot/text files and requires matplotlib.
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