[XTrainYTrain]=japaneseVowelsTrainData;
XTrain（1:5）
figure
plot（XTrain{1}‘）
xlabel（“Time?Step“）;
title（“Training?Observation?1“）
legend（“Feature“+string（1:12）‘Location‘‘northeastoutside‘）

%prepare?data?for?padding??填充
%get?the?sequence?lengths?for?each?observation
numObservations?=?numel（XTrain）;
for?i=1:numObservations
????sequence=XTrain{i};
????sequenceLengths（i）=size（sequence2）;
end
%?sort?by?sequence?lengths
[sequenceLengthsidx]=sort（sequenceLengths）;
XTrain=XTrain（idx）;
YTrain=YTrain（idx）;
%?view?the?sorted?sequence?in?a?bar?chart
figure
bar（sequenceLengths）
ylim（[0?30]）
xlabel（“Sequence“）
ylabel（“Length“）
title（“Sorted?Data“）

%?minibatch
miniBatchSize=27;
%define?LSTM?network?architecture
inputSize=12;
numHiddenUnits=100;
numClasses=9;
layers=[...
????sequenceInputlayer（inputSize）
????bilstmlayer（numHiddenUnits‘OutputMode‘‘last‘）
????fullyConnectedlayer（numClasses）
????softmaxlayer
????classificationlayer
????]
%?training?options
maxEpochs=100;
miniBatchSize=27;
options=trainingOptions（‘adam‘...
????‘ExecutionEnvironment‘‘cpu‘...
????‘GradientThreshold‘1...
????‘MaxEpochs‘maxEpochs...
????‘MinibatchSize‘miniBatchSize...
????‘SequenceLength‘‘longest‘...
????‘Shuffle‘‘never‘...
????‘Verbose‘0...
????‘Plots‘‘training-progress‘）;
%?train?LSTM?network
net=trainNetwork（XTrainYTrainlayersoptions）;

%?test?LSTM?network
%?load?the?test?data
[XTestYTest]=japaneseVowelsTestData;
XTest（1:3）

%?
numObservationsTest?=?numel（XTest）;
for?i=1:numObservationsTest
????sequence?=?XTest{i};
????sequenceLengthsTest（i）=size（sequence2）;
end
[sequenceLengthsTestidx]=sort（sequenceLengthsTest）;
XTest=XTest（idx）;
YTest=YTest（idx）;
%?classify?the?test?data?
miniBatchSize?=27;
YPred=classify（netXTest...
????‘MiniBatchSize‘miniBatchSize...
????‘SequenceLength‘‘longest‘）;
acc=sum（YPred==YTest）./numel（YTest）

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2019-02-28?22:12??LSTM?for?sequence?classification\
?????文件????????1939??2019-03-01?08:47??LSTM?for?sequence?classification\BiLSTM.m