[R] Variable importance - ANN

2013-12-04 Thread Giulia Di Lauro
Hi everybody, I created a neural network for a regression analysis with package ANN, but now I need to know which is the significance of each predictor variable in explaining the dependent variable. I thought to analyze the weight, but I don't know how to do it. Thanks in advance, Giulia Di

Re: [R] Variable importance - ANN

2013-12-04 Thread Liaw, Andy
...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Giulia Di Lauro Sent: Wednesday, December 04, 2013 6:42 AM To: r-help@r-project.org Subject: [R] Variable importance - ANN Hi everybody, I created a neural network for a regression analysis with package ANN, but now I need to know

Re: [R] Variable importance - ANN

2013-12-04 Thread Max Kuhn
If you are using the nnet package, the caret package has a variable importance method based on Gevrey, M., Dimopoulos, I., Lek, S. (2003). Review and comparison of methods to study the contribution of variables in artificial neural network models. Ecological Modelling, 160(3), 249-264. It is