Search the Community

Hello For a statistical experiment I am calculating lots of Gerrity Skill Scores for contingency tables derived from Temperature forecasts/observations. I tried the package for R, and when I use some relative probabilities as baseline that I have derived from climatological data, I sometimes get Scores greater than 1. I am pretty sure this should not happen. Here is a script that can be run in batch mode R which should reproduce the error: library('verification') A=matrix(c(2394,481,0,0,0,0,4718,1399,0,0,0,0,1740,1755,0,0,0,0,3202,594,0,0,0,0,1717),nrow=5) pb=c(0.0632,0.2692,0.1461,0.2338,0.2877) multi.cont(A,pb) I know that the contingency table does not represent the baseline probabilities, but I am still puzzled that this happens. I also coded the procedure in matlab myself, with the information from the original paper and it reproduces the error. Is there a condition about the baseline probabilities that I am not aware of? Any Help is welcome.