OPT: use logit/logistic transform in optimizer
OPT: use logit/logistic transform in optimizer

esc/Psignifit-3.x,esc/Psignifit-3.x,esc/Psignifit-3.x,esc/Psignifit-3.x,esc/Psignifit-3.x,esc/Psignifit-3.x