weka.classifiers.rules
Class DecisionTable.hashKey

java.lang.Object
  weka.classifiers.rules.DecisionTable.hashKey

All Implemented Interfaces:

java.io.Serializable

Enclosing class:

DecisionTable

public class DecisionTable.hashKey

extends java.lang.Object

implements java.io.Serializable

Class providing keys to the hash table

See Also:

Serialized Form

Field Summary

private double[]	attributes Array of attribute values for an instance
private int	key The key
private boolean[]	missing True for an index if the corresponding attribute value is missing.
private java.lang.String[]	values The values

Constructor Summary

DecisionTable.hashKey(double[] t)
Constructor for a hashKey

DecisionTable.hashKey(Instance t, int numAtts)
Constructor for a hashKey

Method Summary

boolean	equals(java.lang.Object b) Tests if two instances are equal
int	hashCode() Calculates a hash code
void	print_hash_code() Prints the hash code
java.lang.String	toString(Instances t, int maxColWidth) Convert a hash entry to a string

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

attributes

private double[] attributes

Array of attribute values for an instance

missing

private boolean[] missing

True for an index if the corresponding attribute value is missing.

values

private java.lang.String[] values

The values

key

private int key

The key

Constructor Detail

DecisionTable.hashKey

public DecisionTable.hashKey(Instance t,
                             int numAtts)
                      throws java.lang.Exception

Constructor for a hashKey

Parameters:

t - an instance from which to generate a key

numAtts - the number of attributes

DecisionTable.hashKey

public DecisionTable.hashKey(double[] t)

Constructor for a hashKey

Parameters:

t - an array of feature values

Method Detail

toString

public java.lang.String toString(Instances t,
                                 int maxColWidth)

Convert a hash entry to a string

Parameters:

t - the set of instances

maxColWidth - width to make the fields

hashCode

public int hashCode()

Calculates a hash code

Returns:

the hash code as an integer

equals

public boolean equals(java.lang.Object b)

Tests if two instances are equal

Parameters:

b - a key to compare with

print_hash_code

public void print_hash_code()

Prints the hash code