文件名称:lda
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对有类别监督的数据进行先行判别分析用于降维
数据为结构体类型，返回数据也是降维后的结构体类型。如(a.X a.y)a.X是带有类别的数据，a.y是类别信息-Synopsis:
model = lda(data)
model = lda(data,new_dim)
Descr iption:
This function is implementation of Linear Discriminant Analysis.
The goal is to train the linear transform which maximizes ratio
between between-class and within-class scatter matrix of projected
data.
数据为结构体类型，返回数据也是降维后的结构体类型。如(a.X a.y)a.X是带有类别的数据，a.y是类别信息-Synopsis:
model = lda(data)
model = lda(data,new_dim)
Descr iption:
This function is implementation of Linear Discriminant Analysis.
The goal is to train the linear transform which maximizes ratio
between between-class and within-class scatter matrix of projected
data.
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lda.m
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