smile.neighbor.lsh

Class HashValueParzenModel

java.lang.Object

smile.neighbor.lsh.HashValueParzenModel

public class HashValueParzenModel
extends java.lang.Object

Hash value Parzen model for multi-probe hash.

Constructor Summary

Constructors

Constructor and Description
HashValueParzenModel(MultiProbeHash hash, MultiProbeSample[] samples, double sigma) Constructor.

Method Summary

Modifier and Type	Method and Description
void	estimate(int m, double h) Given a hash value h, estimate the Gaussian model (mean and variance) of neighbors existing in the corresponding bucket.
double	mean() Returns the mean.
double	sd() Returns the standard deviation.

Methods inherited from class java.lang.Object

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

Constructor Detail

HashValueParzenModel

public HashValueParzenModel(MultiProbeHash hash,
                            MultiProbeSample[] samples,
                            double sigma)

Constructor.

Method Detail

estimate

public void estimate(int m,
                     double h)

Given a hash value h, estimate the Gaussian model (mean and variance) of neighbors existing in the corresponding bucket.

Parameters:

m - the index of hash function.

h - the given hash value.

mean

public double mean()

Returns the mean.

sd

public double sd()

Returns the standard deviation.