Example usage for weka.associations Associator buildAssociations

Introduction

In this page you can find the example usage for weka.associations Associator buildAssociations.

Prototype

void buildAssociations(Instances data) throws Exception;

Source Link

Document

Generates an associator.

Usage

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

License:Open Source License

/**
 * Executes the flow item./*from w  w  w.  ja  v  a2 s  .  co m*/
 *
 * @return      null if everything is fine, otherwise error message
 */
@Override
protected String doExecute() {
    String result;
    Instances data;
    Instance inst;
    weka.associations.Associator cls;

    result = null;

    try {
        if ((m_InputToken != null) && (m_InputToken.getPayload() instanceof Instances)) {
            cls = getAssociatorInstance();
            data = (Instances) m_InputToken.getPayload();
            cls.buildAssociations(data);
            if ((cls instanceof AssociationRulesProducer) && ((AssociationRulesProducer) cls).canProduceRules())
                m_OutputToken = new Token(new WekaAssociatorContainer(cls, new Instances(data, 0), data,
                        ((AssociationRulesProducer) cls).getAssociationRules().getRules()));
            else
                m_OutputToken = new Token(new WekaAssociatorContainer(cls, new Instances(data, 0), data));
        }
    } catch (Exception e) {
        m_OutputToken = null;
        result = handleException("Failed to process data:", e);
    }

    if (m_OutputToken != null)
        updateProvenance(m_OutputToken);

    return result;
}

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