annotate toolboxes/FullBNT-1.0.7/KPMstats/logist2Apply.m @ 0:e9a9cd732c1e tip

first hg version after svn
author wolffd
date Tue, 10 Feb 2015 15:05:51 +0000
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wolffd@0 1 function p = logist2Apply(beta, x)
wolffd@0 2 % LOGIST2APPLY 2 class logistic regression: compute posterior prob of class 1
wolffd@0 3 % function p = logist2Apply(beta, x)
wolffd@0 4 %
wolffd@0 5 % x(:,i) - each COLUMN is a test case; we append 1s automatically, if appropriate
wolffd@0 6
wolffd@0 7 [D Ncases] = size(x);
wolffd@0 8 if length(beta)==D+1
wolffd@0 9 F = [x; ones(1,Ncases)];
wolffd@0 10 else
wolffd@0 11 F = x;
wolffd@0 12 end
wolffd@0 13 p = 1./(1+exp(-beta(:)'*F));