edu.ksu.cis.kdd.tiler
Class CMAC

java.lang.Object
  edu.ksu.cis.kdd.tiler.CMAC

public class CMAC

extends java.lang.Object

Adaptation of Rich Sutton's CMAC tiler v2.0. See:
http://www-anw.cs.umass.edu/~rich/tiles2.html

Basic version.

Author:

Roby Joehanes

Field Summary

static CMAC

v

Constructor Summary

CMAC()
Default constructor with 2048 entries of random numbers

CMAC(int randomsize)

Method Summary

int[]	getTiles(int numTile, int maxVarSize, double[] nums)
int[]	getTiles(int numTile, int maxVarSize, double[] nums, int h1)
int[]	getTiles(int numTile, int maxVarSize, double[] nums, int[] hashModifier) Do the CMAC tiling.
protected int	hash(int[] num, int maxValue, int incr) UNH hashing procedure.

Methods inherited from class java.lang.Object

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

Field Detail

v

public static CMAC v

Constructor Detail

CMAC

public CMAC()

Default constructor with 2048 entries of random numbers

See Also:

Object.Object()

CMAC

public CMAC(int randomsize)

Method Detail

getTiles

public int[] getTiles(int numTile,
                      int maxVarSize,
                      double[] nums)

See Also:

getTiles(int, int, double[], int[])

getTiles

public int[] getTiles(int numTile,
                      int maxVarSize,
                      double[] nums,
                      int h1)

See Also:

getTiles(int, int, double[], int[])

getTiles

public int[] getTiles(int numTile,
                      int maxVarSize,
                      double[] nums,
                      int[] hashModifier)

Do the CMAC tiling.

Parameters:

numTile - The number of tile elements to output (corresponds to the num_tilings)

maxVarSize - The maximum number elements if there were no tilings (corresponds to the memory_size), try to make it a power of two if possible.

nums - The numbers to tile (corresponds to floats)

hashModifier - An array of integers to modify the hashing procedures. If null, then we do the default hashing. (corresponds to ints).

Returns:

int[] The tiles (corresponds to the parameter tiles)

hash

protected int hash(int[] num,
                   int maxValue,
                   int incr)

UNH hashing procedure. It utilizes the variable rand[], array of random numbers. I implemented the random call using MersenneTwisterFast.

Parameters:

num - The number arrays to determine the hashing

maxValue - The maximum value of the result

incr - The increment parameter

Returns:

int The hash value output