gusucode.com > 支持向量机工具箱 - LIBSVM OSU_SVM LS_SVM源码程序 > 支持向量机工具箱 - LIBSVM OSU_SVM LS_SVM\stprtool\generalp\erfc2.m
function [y]=erfc2(x,m,d) % ERFC2 Normal cumulative distribution function (cdf). % [y]=erfc2(x,m,d) % % ERFC2 computes normal cumulative distribution function (cdf) % using Matlab's function 'erfc'. The argument m is mean value % and d is stantard deviation. The computed vlaue is % % erfc2(x) = 1/(sqrt(2*pi)*d) * integral_{x}^{inf}exp(-(t-m)^2/(2*d^2) dt % % See also ERFC % % Statistical Pattern Recognition Toolbox, Vojtech Franc, Vaclav Hlavac % (c) Czech Technical University Prague, http://cmp.felk.cvut.cz % Modifications % 27-Oct-2001, V. Franc x2=(x-m)/(sqrt(2)*d); y=erfc(x2)/2; return;