Example usage for weka.attributeSelection AttributeSelection CVResultsString

Introduction

In this page you can find the example usage for weka.attributeSelection AttributeSelection CVResultsString.

Prototype

public String CVResultsString() throws Exception 

Source Link

Document

returns a string summarizing the results of repeated attribute selection runs on splits of a dataset.

Usage

From source file:adams.flow.transformer.WekaAttributeSelectionSummary.java

License:Open Source License

/**
 * Executes the flow item.//  w ww. j  av a2 s. co m
 *
 * @return      null if everything is fine, otherwise error message
 */
@Override
protected String doExecute() {
    String result;
    AttributeSelection eval;
    boolean crossValidation;
    WekaAttributeSelectionContainer cont;

    result = null;

    if (m_InputToken.getPayload() instanceof AttributeSelection) {
        eval = (AttributeSelection) m_InputToken.getPayload();
        try {
            eval.CVResultsString(); // throws an exception if no CV performed
            crossValidation = true;
        } catch (Exception e) {
            crossValidation = false;
        }
    } else {
        cont = (WekaAttributeSelectionContainer) m_InputToken.getPayload();
        eval = (AttributeSelection) cont.getValue(WekaAttributeSelectionContainer.VALUE_EVALUATION);
        crossValidation = cont.hasValue(WekaAttributeSelectionContainer.VALUE_FOLD_COUNT);
    }

    try {
        if (crossValidation)
            m_OutputToken = new Token(eval.CVResultsString());
        else
            m_OutputToken = new Token(eval.toResultsString());
    } catch (Exception e) {
        result = handleException("Failed to generate summary string!", e);
    }

    return result;
}

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