search for: doule

Hi list. I''m writing a program that stores a lot of Floats into MySQL database. Simplified version of the program use the following form of class. class Val < ActiveRecord::BASE end And Vals table contains one column: num double One of my data contains -Infinity for num and when I try to Val.new Val.num = <- Here goes -Inifinity Val.save! Then the program crashes:

...t4 <- rpart(Kyphosis ~ Age + Number + Start, data=kyphosis1, weights=weight) #leads to result very similar to fit2 with loss<-matrix(c(0,1,2,0),nrow=2,ncol=2) #(same tree and cutoff points, but slightly different probabilities, maybe numerical artefact?) fit4 plot(fit4) text(fit4,use.n=T) #doule check with inverse loss matrix loss<-matrix(c(0,1,2,0),nrow=2,ncol=2,byrow=T) fit2<- rpart(Kyphosis ~ Age + Number + Start, data=kyphosis, parms=list(loss=loss)) weight<-c(rep(2,64),rep(1,17)) fit4 <- rpart(Kyphosis ~ Age + Number + Start, data=kyphosis1, weights=weight) fit2 fit4 #a...