Examples of weka.filters.unsupervised.attribute.RemoveByName

weka.filters.unsupervised.attribute.RemoveByName

Removes attributes based on a regular expression matched against their names.

Valid options are:

 -D Turns on output of debugging information.

 -E <regular expression> The regular expression to match the attribute names against. (default: ^.*id$)

 -V Flag for inverting the matching sense. If set, attributes are kept instead of deleted. (default: off)

@author FracPete (fracpete at waikato dot ac dot nz) @version $Revision: 6076 $

     * @param examples
     * @return
     * @throws Exception
     */
    protected Filter getRemoveParticipantFilter(ExampleSet examples) throws Exception {
        RemoveByName filter = new RemoveByName();
        filter.setExpression(Pattern.quote(ExampleSet.PARTICIPANT_ATTR_NAME));


        filter.setInputFormat(examples.getInstances());
        Instances filtered = Filter.useFilter(examples.getInstances(), filter);
        examples.setInstances(filtered);


        return filter;
    }

     * @param examples
     * @return
     * @throws Exception
     */
    protected Filter getRemoveMessageFilter(ExampleSet examples) throws Exception {
        RemoveByName filter = new RemoveByName();
        filter.setExpression(Pattern.quote(ExampleSet.MESSAGE_ATTR_NAME));


        filter.setInputFormat(examples.getInstances());
        Instances filtered = Filter.useFilter(examples.getInstances(), filter);
        examples.setInstances(filtered);


        return filter;
    }

     * @param examples
     * @return
     * @throws Exception
     */
    protected Filter getRemoveIDFilter(ExampleSet examples) throws Exception {
        RemoveByName filter = new RemoveByName();
        filter.setExpression(Pattern.quote(ExampleSet.ID_ATTR_NAME));


        filter.setInputFormat(examples.getInstances());
        Instances filtered = Filter.useFilter(examples.getInstances(), filter);
        examples.setInstances(filtered);


        return filter;
    }

Examples of weka.filters.unsupervised.attribute.RemoveByName

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