Data Mining Assignment 2

Experiments with Weka

• The weka software package is available on mansfield under /bin/weka/weka-3-3-6. Please set up the CLASSPATH environment variable to be /bin/weka/weka-3-3-6 in order to run this installation. With tcsh, add the following line in your ~/.cshrc file:
  setenv CLASSPATH /bin/weka/weka-3-3-6
• Copy the data files from /bin/weka/weka-3-3-6/data to your home directory.
• Run the Apriori algorithm on each of the seven databases, e.g.,
  java weka.associations.Apriori -t weather.nominal.arff
• Try the -N, -C, and -M switches.
  -N <required number of rules> specifies the number of rules.
  -C <miniconf> specifies the minimum confidence.
  -M <minisup> specifies the minimum support.
  
• Submit a report in plain text by e-mail to document the differences the -N, -C, and -M switches make on the soybean.arff file. You should try at least two different values for each of these switches; one greater and one smaller than the default value (which is the value that you do not use the switch).