spearmanrankrows.m

用于文本语义分析的潜在语义分析算法LSA(Latent Semantic Analysis)

function y=spearmanrankrows(x)
%  y=spearmanrankrows(x)
%  return Spearman Rank matrix of m*n matrix x 
%  give the result of rank within rows!
%  y is the output matrix
min=-100;
[m n]=size(x);
y=zeros(m,n);
for i=1:m
    for j=1:n
        index=1;
        for k=1:n
            if x(i,k)>x(i,index)
                index=k;
            end
        end
        x(i,index)=min;
        y(i,index)=j;
    end
end