hmmstate.java

来自「It is the Speech recognition software. 」· Java 代码 · 共 71 行

/*
 * Copyright 1999-2002 Carnegie Mellon University.  
 * Portions Copyright 2002 Sun Microsystems, Inc.  
 * Portions Copyright 2002 Mitsubishi Electric Research Laboratories.
 * All Rights Reserved.  Use is subject to license terms.
 * 
 * See the file "license.terms" for information on usage and
 * redistribution of this file, and for a DISCLAIMER OF ALL 
 * WARRANTIES.
 *
 */

package edu.cmu.sphinx.linguist.acoustic;

import edu.cmu.sphinx.frontend.Data;

/**
 * Represents a single state in an HMM
 */
public interface HMMState {

    /**
     * Gets the HMM associated with this state
     *
     * @return the HMM
     */
    public HMM getHMM();

    /**
     * Gets the state 
     *
     * @return the state
     */
    public int getState();


    /**
     * Gets the score for this HMM state
     *
     * @param data the data to be scored
     *
     * @return the acoustic score for this state.
     */
    public float getScore(Data data);

    /**
     * Determines if this HMMState is an emittting state
     *
     * @return true if the state is an emitting state
     */
    public boolean isEmitting();


    /**
     * Retrieves the state of successor states for this state
     *
     * @return the set of successor state arcs
     */
    public HMMStateArc[] getSuccessors();


    /**
     * Determines if this state is an exit state of the HMM
     *
     * @return true if the state is an exit state
     */
    public boolean isExitState();
}