search for: critest

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2007 Jul 17
1
fit a nonlinear model using nlm()
...0) stim<-matrix(nrow=500,ncol=100) for (i in 1:500) { stim[i,]<-signal+rnorm(n=length(signal), mean=0, sd=noisesd) if (sum(stim[i,]*signal)>crit) (resp[i]<-1) else (resp[i]<-0) } f<-function(signalest) { r<-array(dim=500) for (i in 1:500) { r[i]<-sum(stim[i,]*signalest)>critest } sum((r-resp)^2) } fit<-nlm(f, stim[1,])