ca.pfv.spmf.algorithms.sequential_rules.rulegen

Class AlgoRuleGen

java.lang.Object

ca.pfv.spmf.algorithms.sequential_rules.rulegen.AlgoRuleGen

public class AlgoRuleGen
extends java.lang.Object

This is an implementation of the RuleGen algorithm proposed by Zaki et al to generate sequential rules where the antecedent and consequent are sequential patterns. The RuleGen algorithm is described in:

M. J. Zaki, “SPADE: An Efficient Algorithm for Mining Frequent Se-quences,”Machine Learning, vol. 42, no.1-2, pp. 31-60, 2001.

However, note that instead of using the SPADE algorithm, we use the PrefixSpan algorithm because at the time that this algorithm was implemented there was no implementation of SPADE in SPMF and PrefixSpan is a fast algorithm.

See Also:

AlgoPrefixSpan, SequentialPattern, SequentialPatterns

Constructor Summary

Constructors

Constructor and Description
AlgoRuleGen() Default constructor.

Method Summary

Modifier and Type	Method and Description
void	printStats() Print statistics to System.out about the latest execution of the algorithm.
void	runAlgorithm(int minsup, double minconf, java.lang.String input, java.lang.String output) Run the algorithm

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AlgoRuleGen

public AlgoRuleGen()

Default constructor.

Method Detail

runAlgorithm

public void runAlgorithm(int minsup,
                         double minconf,
                         java.lang.String input,
                         java.lang.String output)
                  throws java.io.IOException

Run the algorithm

Parameters:

minsup - the minimum support threshold

minconf - the minimum confidence threshold

input - the input file path

output - the output file path for saving the result

Throws:

java.io.IOException - exception if there is an error reading/writing files

printStats

public void printStats()

Print statistics to System.out about the latest execution of the algorithm.