%forward?algotithm
clc
%===============data===================
A=[0.50.20.3;0.30.50.2;0.20.30.5];
B=[0.50.5;0.40.6;0.70.3];
PI=[0.20.40.4];
Q=[123];
T=4;%[~T]=size（O）
O=[1212];
%======forward?algorithm?method========
alpha=[];
%calculate?initial?value
[~num]=size（Q）;
for?i=1:num
alpha（i）=PI（i）*B（iO（1））;
end
alpha
%recursive
for?k=2:T
alpha=recursive（alphaABO（k）num）
end
%
prob=0;
for?i=1:num
????prob=prob+alpha（i）;
end
prob
%======back?algorithm?method==============
beta=ones（1num）
for?k=0:T-2
????beta=recursive1（betaABO（T-k）num）;
end
prob=0;
for?i=1:num
????prob=prob+PI（i）*B（iO（1））*beta（i）;
end
prob
%==========viterbi==========================
viter=zeros（Tnum）;
for?i=1:num
viter（1i）=PI（i）*B（iO（1））;
end
viter
%recursive
flag=2;
path=zeros（Tnum）;
for?i=1:num
????path（1i）=i;
end
for?k=2:T
[viter（k:）path（flag:）]=viterbi（viter（k-1:）ABO（k）num）
flag=flag+1;
end

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

?????文件????1029527??2015-11-16?10:32??統計學習方法\Boost算法\Adaboost.pdf

?????文件????????961??2015-11-17?19:02??統計學習方法\HMM算法\forwardalgorithm.m

?????文件????1595668??2015-11-17?19:08??統計學習方法\HMM算法\HMM.pdf

?????文件????????212??2015-11-17?15:59??統計學習方法\HMM算法\recursive.m

?????文件????????192??2015-11-17?19:10??統計學習方法\HMM算法\recursive1.m

?????文件????????255??2015-11-17?18:42??統計學習方法\HMM算法\viterbi.m

?????文件???????6718??2015-11-04?15:43??統計學習方法\KNN算法\data.txt

?????文件?????????86??2015-11-04?14:58??統計學習方法\KNN算法\distancecount.asv

?????文件????????110??2015-11-04?15:02??統計學習方法\KNN算法\distancecount.m

?????文件??????57187??2010-02-11?17:05??統計學習方法\KNN算法\kdtree\kdtree\example.jpg

?????文件???????6631??2010-02-17?20:10??統計學習方法\KNN算法\kdtree\kdtree\kd_buildtree.m

?????文件???????2599??2010-02-17?19:07??統計學習方法\KNN算法\kdtree\kdtree\kd_closestpointfast.m

?????文件???????3790??2010-02-17?19:08??統計學習方法\KNN算法\kdtree\kdtree\kd_closestpointgood.m

?????文件???????2827??2010-02-17?21:40??統計學習方法\KNN算法\kdtree\kdtree\kd_demo.m

?????文件???????6091??2010-02-17?21:40??統計學習方法\KNN算法\kdtree\kdtree\kd_knn.m

?????文件???????2648??2010-02-07?14:25??統計學習方法\KNN算法\kdtree\kdtree\kd_nclosestpoints.m

?????文件???????1443??2010-02-11?16:59??統計學習方法\KNN算法\kdtree\kdtree\kd_plotbox.m

?????文件???????5296??2010-02-17?19:11??統計學習方法\KNN算法\kdtree\kdtree\kd_rangequery.m

?????文件???????1407??2015-11-04?09:26??統計學習方法\KNN算法\kdtree\KNN.py

?????文件???????1566??2010-02-17?21:42??統計學習方法\KNN算法\kdtree\license.txt

?????文件??????16686??2011-04-23?12:22??統計學習方法\KNN算法\kdtree_cpp_warpper\TestKdtree\kdtree.c

?????文件???????4677??2009-08-28?04:21??統計學習方法\KNN算法\kdtree_cpp_warpper\TestKdtree\kdtree.h

?????文件???????7325??2015-11-04?14:16??統計學習方法\KNN算法\kdtree_cpp_warpper\TestKdtree\kdtree.o

?????文件???????2169??2011-04-23?15:40??統計學習方法\KNN算法\kdtree_cpp_warpper\TestKdtree\TestKdtree.cpp

?????文件???????4566??2011-04-10?21:28??統計學習方法\KNN算法\kdtree_cpp_warpper\TestKdtree\TestKdtree.dsp

?????文件???????4313??2011-04-23?12:17??統計學習方法\KNN算法\kdtree_cpp_warpper\TestKdtree\TestKdtree.vcproj

?????文件????????896??2011-04-10?20:47??統計學習方法\KNN算法\kdtree_cpp_warpper\TestKdtree.sln

?????文件????????383??2015-11-04?16:48??統計學習方法\KNN算法\knearestneighbor.asv

?????文件????????531??2015-11-04?16:53??統計學習方法\KNN算法\knearestneighbor.m

?????文件?????334125??2015-11-17?19:44??統計學習方法\KNN算法\k近鄰法KNN筆記.pdf

............此處省略34個文件信息