Re: [R] Neural Network resource

2009-06-02 Thread Indrajit Sengupta
  From: "jude.r...@ubs.com" Sent: Thursday, May 28, 2009 10:49:36 PM Subject: Re: [R] Neural Network resource The package AMORE appears to be more flexible, but I got very poor results using it when I tried to improve the predictive accuracy of a

Re: [R] Neural Network resource

2009-05-28 Thread jude.ryan
The package AMORE appears to be more flexible, but I got very poor results using it when I tried to improve the predictive accuracy of a regression model. I don't understand all the options well enough to be able to fine tune it to get better predictions. However, using the nnet() function in packa

Re: [R] Neural Network resource

2009-05-27 Thread Tony Breyal
assed the input dataset and tried to > get the predictions, all the predicted values were identical! This confused > me a bit and was wondering whether my understanding of the Neural Network was > wrong. > > Have you ever faced anything like it? > > Regards, > Indrajit > &

Re: [R] Neural Network resource

2009-05-27 Thread Indrajit Sengupta
### Here I am trying to predict Oxygen levels using the 6 independent variables. But whenever I am trying to run a prediction - I am getting constant values throughout (In the above example - the values of pred). Thanks & Regards, Indrajit   - Original Message F

Re: [R] Neural Network resource

2009-05-27 Thread Max Kuhn
> I fed this data into a Neural network (3 hidden layers with 6 neurons in each > layer) and trained the network. When I passed the input dataset and tried to > get the predictions, all the predicted values were identical! This confused > me a bit and was wondering whether my understanding of th

Re: [R] Neural Network resource

2009-05-27 Thread Indrajit Sengupta
understanding of the Neural Network was wrong. Have you ever faced anything like it? Regards, Indrajit From: "markle...@verizon.net" Sent: Wednesday, May 27, 2009 7:54:59 PM Subject: Re: [R] Neural Network resource Hi: I've never used that p

Re: [R] Neural Network resource

2009-05-27 Thread Tony Breyal
There's a link on the CRAN page for the AMORE package which apears to have some cool information: http://wiki.r-project.org/rwiki/doku.php?id=packages:cran:amore Seems like an interesting package, I hadn't actually heard of it before your post. HTH, Tony On 27 May, 09:13, Indrajit Sengupta wro

[R] Neural Network resource

2009-05-27 Thread Indrajit Sengupta
Hi All, I am trying to learn Neural Networks. I found that R has packages which can help build Neural Nets - the popular one being AMORE package. Is there any book / resource available which guides us in this subject using the AMORE package? Any help will be much appreciated. Thanks, Indrajit