similar to: classification with nnet: handling unequal class sizes

Dear R-users I use nnet for a classification (2 classes) problem. I use the code CVnn1, CVnn2 as described in V&R. The thing I changed to the code is: I define the (class) weight for each observation in each cv 'bag' and give the vector of weights as parameter of nnet(..weights = weight.vector...) Unfortunately I get an error during some (but not all!) inner-fold cv runs:

Dear R-users, dear Prof. Ripley as package maintainer I tried to investigate the odd error, when I call nnet together with a 'weights' parameter, using the 'fgl' example in V&R p 348 The error I get is: Error in eval(expr, envir, enclos) : Object "w" not found I think it is a kind of scoping problem, but I really cannot see, what the problem exactly is. and

Hi, I am trying to determine the number of units in the hidden layer and the decay rate using the CVnn2 script found in MASS directory (reference: pg 348,MASS-4). The model that I am using is in the form of Y ~ X1 + X2 + X3... + X11 and the underlying data is time-series in nature. I found the MASS and nnet package extremely useful (many thanks to the contributors). However I am getting

Hi All, I am trying to use a neural network for my work, but I am not sure about my approach to select a parsimonious model. In R with nnet, the IAC has not been defined for a feed-forward neural network with a single hidden layer. Is this because it does not make sens mathematically in this case? For example, is this pseudo code sensible? Thanks in advance for your help. I am sorry if this

Full_Name: Martha Nason Version: 2.0.1 OS: Windows XP Submission from: (NULL) (137.187.154.154) I am running simulations using fisher's test on 2 x c tables and a very small p.value from fisher's test (<2.2e-16) is returned as a negative number. Code follows. > set.seed(0) > nreps.outer <-7 > pvalue.fisher <- rep(NA,nreps.outer) > > population1 <- c(

Recently, I was working with some lagged designs where a vector of observations at one time was used to predict a vector of observations at another time using a lag 1 design. In the work, I noticed a lot of negative correlations, so I ran a simple simulation with 2 matched points. The crude simulation example below shows that the correlation can be -1 or +1, but interestingly if you do this

I am new to R and I am trying to do a monte carlo simulation where I generate data and interject error then test various cut points; however, my output was garbage (at x equal zero, I did not get .50) I am basically testing the performance of classifiers. Here is the code: n <- 1000; # Sample size fitglm <- function(sigma,tau){ x <- rnorm(n,0,sigma) intercept <- 0 beta

I''m having some trouble with the instructions at the link below: http://instantrails.rubyforge.org/tutorial/restarting_the_dev_env.html I had started at the tutorial at http://instantrails.rubyforge.org/ tutorial/index.html and had gotten as far as creating the cookbook2 exercise and had gotten to the "Welcome aboard you''re riding ruby rails" screen in explorer, but

> -----Original Message----- > From: H. Peter Anvin [mailto:hpa at zytor.com] > Sent: 06 June 2014 16:14 > To: Andrew Rae; 'syslinux at zytor.com' > Subject: Re: [syslinux] EFI booting over network - can't then load anything > > On 06/06/2014 07:27 AM, Andrew Rae wrote: > > Hi all.. > > > > Quick one if someone could show me a line out of their

> > From: Matt Fleming [matt at console-pimps.org] > > Sent: 25 June 2014 07:39 > > To: Andrew Rae > > Cc: Gene Cumm; syslinux at zytor.com > > Subject: Re: [syslinux] testing out 6.03 network booting... > > > > Andrew, could you try out syslinux-6.03-pre18? Peter pushed the release > > button yesterday and -pre18 contains my change. It would be

On Sun, 22 Jun, at 06:15:50PM, Andrew Rae wrote: > > Matt - I'd love to try it - but I'm not so good at fixing compiling > issues. right now I get stuck at being unable to 'make' the efi32 or > efi64 components due to an error: Andrew, could you try out syslinux-6.03-pre18? Peter pushed the release button yesterday and -pre18 contains my change. It would be good to

Dear listers, I have a piece of code which performs an ANOVA type of analysis on 2D GC data. The code is shown below: # ANOVA 2D GC analysis # maxc <- number of samples # nreps <- number of samples maxc <- 2 nreps <- 4 sscl <- NULL cmean <- NULL # # Initial stat. variable # dftot <- nrow(mat)-1 dfcl <- maxc - 1 dferr <- dftot - dfcl totmean

On Thu, 26 Jun, at 09:41:38PM, Andrew Rae wrote: > > If I can, I'll try on a physical EFI machine tomorrow (instead of > VMWare WS). Hey Andrew, Sorry for the delay. Could you provide the packet dumps of the network traffic involved in the failed EFI boot? Hopefully that will allow us to track down exactly what's going wrong. -- Matt Fleming, Intel Open Source Technology

This is a resend - customer complains that some phone systems they call don't respond to key tones, please advise. Thanks Rob. ----- Original Message ----- From: Softprofit Solutions To: asterisk-users@lists.digium.com Sent: Monday, November 24, 2003 7:34 PM Subject: tone detection problem Some commercial systems don't hear the tones dialed from an analog handset, same

I'm having sporadic problems with glm on my alpha workstation running Compaq Tru64 UNIX V5.0 (I can't replicate the problem on my Linux PC). I have the same problem whether I use a version of R built with the native C-compiler or a version compiled with gcc. In both cases I've built with g77. I want to do some simulations with a call to glm in each rep. A simplified version would be

Greetings: In R parallel's vignette, there is a comment "It would however take only slightly more work to allocate a stream to each task." (p.6). I've written down a working example that can allocate not just one, but several separate seeds for each task. (We have just a few project here that need multiple streams). I would like to help work that up for inclusion in the

> > >> > I am trying to rsync folders/files hosted on a Windows > machine to a > >> > Linux machine. Many of the directory names have spaces in them. > >> > How can I list them in a file so that the --include-from > option use > >> > them correctly? > >> > Thanks! > >> > > >> > Charles > >>

Dear R-devel, A user reported a strange problem with predict.randomForest in the randomForest package yesterday, and I'm baffled by it. The code at the end of the message produces the error. The problem is that, in predict.randomForest, there's a .Fortran call to "runforest". One of the arguments passed in is "countts", which is a vector of doubles. The error

Hi all, this is OT, but maybe someone can give me a clue. I've got data from eye tracker experiments (750 data points). These figures show how the data lock like |** * ***** |*** ****** | ** **** | * * | | * * | | * |-------------- |--------------- Y axes display velocity, x axes display time, * are the data points.

Hi All, I'm having some trouble assigning arguments inside a function to produce a plot from a model Can anyone help me? Below I've outlined the situation and examples of failing and working code. Regards Mike ## data ## decay.data <- ... behaviors lift reach.uu estimated.conversions.uu total.reach 1 1 432.0083 770 770 0.00 2