ostore.oil
Class HMM.Prediction

java.lang.Object
  |
  +--ostore.oil.HMM.Prediction

All Implemented Interfaces:

Model.Prediction, QueueElementIF, QuickSerializable

Enclosing class:

HMM

public static class HMM.Prediction

extends Object

implements Model.Prediction

A Prediction object contains an array of states and a matching array of weights. The arrays are sorted, with the most likely (highest-weighted) states first. The probability of each state is computed using the HMM Maximum Likelihood estimates.

Version:

$Id: HMM.java,v 1.31 2002/07/20 19:38:03 srhea Exp $

Author:

Dennis Geels

See Also:

HMM.predict(int), Model.Prediction

Field Summary

double	log_likelihood The logarithm of the likelihood of this Prediction given the current model parameters (p(D|\theta)).
QuickSerializable[]	states The states predicted to occur soon.
double[]	weights The estimated weight (confidence) for each state.

Constructor Summary

HMM.Prediction(InputBuffer buffer)
Constructs a Prediction from its serialized form.

HMM.Prediction(QuickSerializable[] states, double[] weights, double log_likelihood)
Creates a new Prediction with the specified states and their weights.

Method Summary

void	serialize(OutputBuffer buffer) Add the object to the buffer.
String	toString() Produces a brief human-readable summary of this Prediction.

Methods inherited from class java.lang.Object

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

Field Detail

states

public QuickSerializable[] states

The states predicted to occur soon.

weights

public double[] weights

The estimated weight (confidence) for each state. Each weight is equal to the number of times the state is expected to occur in the near future.

log_likelihood

public double log_likelihood

The logarithm of the likelihood of this Prediction given the current model parameters (p(D|\theta)).

Constructor Detail

HMM.Prediction

public HMM.Prediction(QuickSerializable[] states,
                      double[] weights,
                      double log_likelihood)

Creates a new Prediction with the specified states and their weights.

HMM.Prediction

public HMM.Prediction(InputBuffer buffer)
               throws QSException

Constructs a Prediction from its serialized form.

Method Detail

toString

public String toString()

Produces a brief human-readable summary of this Prediction.

Overrides:

toString in class Object

Returns:

a String containing the top few predicted states, ordered by weight.

serialize

public void serialize(OutputBuffer buffer)

Description copied from interface: QuickSerializable

Add the object to the buffer.

Specified by:

serialize in interface QuickSerializable

Parameters:

buffer - the output buffer to add the object to