public?class?Backward?extends?HMM{
	
	public?Backward（int?stateNumint?observationSymbolNum）
	{
		super（stateNumobservationSymbolNum）;
	}
	//ob?已知的觀察序列
	public?double?backward（int[]?ob）
????{
????????double[][]?beta?=?null;?????//?只聲明，不定義
????????return?backward（ob?beta）;
????}
	//ob?已知的觀察序列；beta?后向變量；返回觀測序列的概率
	public?double?backward（int[]?obdouble[][]?beta）
????{????????????
		
????????beta?=?new?double[ob.length][N];
????????//?初始化
????????System.out.println（“1.初始化：“）;
????????for?（int?i?=?0;?i?????????{
????????	beta[ob.length?-?1][i]?=?1.0;
????????	System.out.println（“beta[“+（ob.length?-?1）+“][“+i+“]:“+beta[ob.length?-?1][i]）;
????????}

????????//?歸納
????????System.out.println（“2.歸納：“）;
????????for?（int?t?=?ob.length?-?2;?t?>=?0;?t--）
????????{
????????????for?（int?j?=?0;?j?????????????{
????????????????double?Sum?=?0;
????????????????for?（int?i?=?0;?i?????????????????{
????????????????????Sum?+=?A[j][i]?*?B[i][ob[t?+?1]]?*?beta[t?+?1][i];
????????????????}

????????????????beta[t][j]?=?Sum;
????????????????System.out.println（“beta[“+t+“][“+j+“]:“+beta[t][j]）;
????????????}
????????}

????????//?終止
????????String?s=“P（redyellowblue）=“;
		System.out.println（“3.終止，求和：“）;
????????double?probability?=?0;
????????for?（int?i?=?0;?i?????????{
????????????probability?+=?beta[0][i];
????????????s+=“beta[0][“+i+“]“;
????????	if（i!=N-1）
????????		s+=“+“;
????????}
????????System.out.println（s+“=“+probability）;
????????return?probability;
????}
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件?????237916??2015-06-29?16:57??隱Markov模型及其應用\（2006）算法時間復雜度分析中遞歸方程求解方法綜述.pdf

?????文件?????183296??2015-06-30?14:22??隱Markov模型及其應用\code.doc

?????文件????????301??2015-06-29?11:02??隱Markov模型及其應用\hmm2.0\.classpath

?????文件????????382??2015-06-29?11:02??隱Markov模型及其應用\hmm2.0\.project

?????文件????????598??2015-06-29?11:02??隱Markov模型及其應用\hmm2.0\.settings\org.eclipse.jdt.core.prefs

?????文件???????1879??2015-06-29?11:03??隱Markov模型及其應用\hmm2.0\bin\Backward.class

?????文件???????1908??2015-06-29?11:03??隱Markov模型及其應用\hmm2.0\bin\Forward.class

?????文件????????562??2015-06-29?11:07??隱Markov模型及其應用\hmm2.0\bin\HMM.class

?????文件???????1003??2015-06-29?11:05??隱Markov模型及其應用\hmm2.0\bin\TestHMM2$Box.class

?????文件???????1067??2015-06-29?11:05??隱Markov模型及其應用\hmm2.0\bin\TestHMM2$Color.class

?????文件???????4228??2015-06-29?11:05??隱Markov模型及其應用\hmm2.0\bin\TestHMM2.class

?????文件???????2450??2015-06-29?11:05??隱Markov模型及其應用\hmm2.0\bin\Viterbi.class

?????文件???????1626??2015-06-29?11:03??隱Markov模型及其應用\hmm2.0\src\Backward.java

?????文件???????1648??2015-06-29?11:03??隱Markov模型及其應用\hmm2.0\src\Forward.java

?????文件????????432??2015-06-29?11:07??隱Markov模型及其應用\hmm2.0\src\HMM.java

?????文件???????4285??2015-06-29?11:05??隱Markov模型及其應用\hmm2.0\src\TestHMM2.java

?????文件???????2721??2015-06-29?11:05??隱Markov模型及其應用\hmm2.0\src\Viterbi.java

?????文件????????301??2015-06-30?00:07??隱Markov模型及其應用\HMM3.0\.classpath

?????文件????????382??2015-06-30?02:00??隱Markov模型及其應用\HMM3.0\.project

?????文件????????598??2015-06-30?00:07??隱Markov模型及其應用\HMM3.0\.settings\org.eclipse.jdt.core.prefs

?????文件???????1907??2015-06-30?02:00??隱Markov模型及其應用\HMM3.0\bin\Forward.class

?????文件????????562??2015-06-30?02:00??隱Markov模型及其應用\HMM3.0\bin\HMM.class

?????文件???????1018??2015-06-30?02:00??隱Markov模型及其應用\HMM3.0\bin\TestHMM2$Algae.class

?????文件???????1036??2015-06-30?02:00??隱Markov模型及其應用\HMM3.0\bin\TestHMM2$Weather.class

?????文件???????4184??2015-06-30?02:00??隱Markov模型及其應用\HMM3.0\bin\TestHMM2.class

?????文件???????2246??2015-06-30?02:00??隱Markov模型及其應用\HMM3.0\bin\Viterbi.class

?????文件???????1917??2015-06-30?01:19??隱Markov模型及其應用\HMM3.0\src\Forward.java

?????文件????????586??2015-06-30?01:00??隱Markov模型及其應用\HMM3.0\src\HMM.java

?????文件???????4324??2015-06-30?01:20??隱Markov模型及其應用\HMM3.0\src\TestHMM2.java

?????文件???????3030??2015-06-30?01:53??隱Markov模型及其應用\HMM3.0\src\Viterbi.java

............此處省略22個文件信息