[R] AUC/Volume under the surface
Dear Members,I am having trouble in plotting a 3D ROC curve based on multinomial logistic regression. I am also interested in finding AUC/Volume under the surface based on final multivariate model. I do have an interaction term in my final model. I tried using "HUM" library. But I failed to figure out how to include interaction term in the model. Looking forward for any help. Appreciate your help in advance. Regards,rehena [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] Integration in R
Dear R - Experts, I am trying to integrate lognormal distribution (mu = -0.3 and sigma2 = 0.00041.. ) based on the some hypothetical data. But I am getting 0 as the result. I have checked that my R-code is correct as code is giving me result for some other data. As I understand, when I am integrating some pdf with in the range of (0, Inf), I should not get 0. How to handle this kind of problem? Please help. Looking forward for your reply. Regards, rehena [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] Need help in using OPTIM / OPTIMIZATION function
Hi R-Experts, I want to know for one parameter case, which function is better or correct, optim or optimization? I want to optimize the function to get mle using optimization function for single parameter case. Is there any other method to check the optimization really gives the global mle not the local mle. Looking forward for your reply. Thanks in advance. Regards, hena [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] Need help on BBoptim
Hello R-Experts, I want to use BBoptim function to get mle. Is this possible? Practically I want to check whether moment estimate of mle is really mle for a given data set. Thanks in advance. Regards, rehena [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] Need to help to get value for bigger calculation
Hello R-Experts, I want to calculate values like 15^200 or 17^300 in R. In normal case it can calculate the small values of b (a^b). I have fixed width = 1 and digits = 22 but still answers are Inf. How to deal the cases like these? Thanks in advance. Regards, rehena [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
