Example usage for weka.associations ItemSet setCounter

Introduction

In this page you can find the example usage for weka.associations ItemSet setCounter.

Prototype

public void setCounter(int count) 

Source Link

Document

Sets the counter

Usage

From source file:LabeledItemSet.java

License:Open Source License

/**
 * Generates rules out of item sets/*from www. ja v a2  s  .  c om*/
 * @param minConfidence the minimum confidence
 * @param noPrune flag indicating whether the rules are pruned accoridng to the minimum confidence value
 * @return a set of rules
 */
public final FastVector[] generateRules(double minConfidence, boolean noPrune) {

    FastVector premises = new FastVector(), consequences = new FastVector(), conf = new FastVector();
    FastVector[] rules = new FastVector[3];
    ItemSet premise, consequence;

    // Generate all rules with class in the consequence. 
    premise = new ItemSet(m_totalTransactions);
    consequence = new ItemSet(m_totalTransactions);
    int[] premiseItems = new int[m_items.length];
    int[] consequenceItems = new int[1];
    System.arraycopy(m_items, 0, premiseItems, 0, m_items.length);
    consequence.setItem(consequenceItems);
    premise.setItem(premiseItems);
    consequence.setItemAt(m_classLabel, 0);
    consequence.setCounter(this.m_ruleSupCounter);
    premise.setCounter(this.m_counter);
    premises.addElement(premise);
    consequences.addElement(consequence);
    conf.addElement(new Double((double) this.m_ruleSupCounter / (double) this.m_counter));

    rules[0] = premises;
    rules[1] = consequences;
    rules[2] = conf;
    if (!noPrune)
        pruneRules(rules, minConfidence);

    return rules;
}

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