function?[out]?=?fsFisher（XY）
%Fisher?Score?use?the?N?var?formulation
%???X?the?data?each?raw?is?an?instance
%???Y?the?label?in?1?2?3?...?format

numC?=?max（Y）;
[~?numF]?=?size（X）;
out.W?=?zeros（1numF）;

%?statistic?for?classes
cIDX?=?cell（numC1）;
n_i?=?zeros（numC1）;
for?j?=?1:numC
????cIDX{j}?=?find（Y（:）==j）;
????n_i（j）?=?length（cIDX{j}）;
end

%?calculate?score?for?each?features
for?i?=?1:numF
????temp1?=?0;
????temp2?=?0;
????f_i?=?X（:

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件?????????945??2015-11-24?19:56??Fisher?Score.m