similar to: constrOptim - error: initial value not feasible

Hi volks, i have a question about the step() fkt. Is there a possibility to save the last model generated from this method. I have a loop and so i generate 100 different models with the step fkt and i want to know which model is the most common. CODE: ... missStep -> numeric(100) for (j in 1:100) { trainindex <- sample(c(1:462),300) train <- data[trainindex,] test <-

Hi, I am having trouble using constrOptim. My target is to do a portfolio optimization and there some constraints have to be fulfilled. 1) The weight of each share of the portfolio has to be greater than 0 2) The sum of these weights has to be 1 I am able to fulfill either the first or the second constraint but not both. One simple way would be to fulfill the first constraint by using optim as

Hello, in marketing-science field i do some clusteranalysis and get the experience that the scale cause the results dramatic! What recommendation can somebody give me, when i use nominal-variables(recode to 0/1 variables) with 6 point ordinal-variables. Is it better toDo a z-transformation with the ordinal variables , or should i recode this values in 0/1 binaries, too! P.S. Which is a good

Dear friends. I am using function constrOptim(c(0.5,0.3,0.5), fit.error, fit.error.grr, ui=-1*ui,ci=-1*ci) and I am confronted with error message "initial value not feasible" I plug in the initial value of (0.5,0.3,0.5) to function fit.error and fit.error.grr and have pretty reasonable result. I inequality "ui %*% theta - ci >= 0" as suggested in the R manual and it is

Hi, I boot lots of headless virtual machines through Syslinux, and it bothers me that serial emulation must be turned on for the sake of bootloader interaction only. Would it be feasible to add virtio console support to Syslinux besides VGA and serial console? Some PCI utility functions are certainly there, but is the current architecture up to early PCI I/O? Or is this something that the BIOS

Dear list, I'm currently writing a C code to compute the (composite) likelihood - well this is done but not really robust. The C code is wrapped in an R one which call the optimizer routine - optim or nlm. However, the fitting procedure is far from being robust as the parameter space depends on the parameter - I have a covariance matrix that should be a valid one for example. Currently,

> Hello > > I'm currently using Monte Carlo techniques to estimate prices (variable not static) from the following type of data: > > << OLE Object: Microsoft Excel Worksheet >> > > > > Each row is a record from group A and the cells in all but the last column are the volumes of 'widgets' in the record. The last column is the cost of all

My data are (for one experiment): 3 Types of plant (1,2,3) 4 Species per Type (ex:for type 1(a,b,c,d), for type 2(e,f,g,h) and for type 3(i,j,k,l) 8 Repetitions of each Species 3 Stages (10, 20, 30) 2 Measures per Stages, for the stages 20 and 30 (ex: for Stage 10(C), for Stage 20 (A and B) and for Stage 30 (A and B) 3 Types x 4 Species(Type) x 8 Repetitions x

In my post at https://stat.ethz.ch/pipermail/r-help/2011-October/292019.html I included an undefined term "ej". The problem code should be as follows. It seems like a simple linear programming problem, but for some reason my code is not finding the solution. obj <- c(rep(0,3),1) col1 <-c(1,0,0,1,0,0,1,-2.330078923,0) col2 <-c(0,1,0,0,1,0,1,-2.057855981,0) col3

Hello, Please tell me if it's possible to use tinc together with OSPF (instead of static routes in LAN). By OSPF I mean Quagga's GNU/Linux daemon. Namely, I have a group of LANs (private 192.168.x.0/24 each). Each LAN has a GNU/Linux default gateway, 192.168.x.1, that also connects to the Internet via a public IP address (does NAT and firewall for the LAN "behind" it). tinc

Hi folks, I think we need to update compat5x binary to fix FreeBSD-SA-05:21.openssl, but will the binaries built by ``make universe'' be identical with actual build on Alpha, Sparc64, etc? (Yes, I'm volunteering to do the work iff they are identical ;-) Cheers, -- Xin LI <delphij frontfree net> http://www.delphij.net/ See complete headers for GPG key and other information.

Hi, I''ve a local LAN consisting of about 150 machines. I''m using a Linux machine as the gateway machine which inturn connects to two different ISPs. My question is can a Linux based machine match the performance of a hardware based routers provided by Cisco,... OR is my decision to go for a Linux based solution is a wrong one?. Is there so much difference between these

Dear R-tisans, I am trying to calculate the 12th root of a transition (square) matrix, but can't seem to obtain an accurate result. I realize that this post is laced with intimations of quantitative finance, but the question is both R-related and broadly mathematical. That said, I'm happy to post this to R-SIG-Finance if I've erred in posting this to the general list. I've

Dear all, I'm using R 2.8.1 under Windows Vista on a dual core 2,4 GhZ with 4 GB of RAM. I'm trying to reproduce a result out of "Analysis of Financial Time Series" by Ruey Tsay. In R I'm using the fGarch library. After fitting a ar(3)-garch(1,1)-model > model<-garchFit(~arma(3,0)+garch(1,1), analyse) I'm saving the results via > result<-model

Hi all, I've started looking at the GlobalMerge pass, enabled by default on ARM and AArch64. I think we should reconsider that, at least for AArch64. As is, the pass just merges all globals together, in groups of 4KB (AArch64, 128B on ARM). At the time it was enabled, the general thinking was "it's almost free, it doesn't affect performance much, we might as well use it".

On Fri, Sep 14, 2007 at 11:42:18PM -0700, Tanya Lattner wrote: > The 2.1 pre-release (version 1) is available for testing: > http://llvm.org/prereleases/2.1/version1/ > > [...] > > 2) Download llvm-2.1, llvm-test-2.1, and the llvm-gcc4.0 source. > Compile everything. Run "make check" and the full llvm-test suite > (make TEST=nightly report). > > Send

On Feb 19, 2011, at 11:25 AM, Jack Howarth wrote: > Is anyone able to bootstrap llvm-gcc42 svn on x86_64-apple-darwin10? Currently it is > failing here with... It was broken. I think I've fixed it in reverting 125960. -eric

On Mon, Feb 21, 2011 at 03:58:19PM -0800, Eric Christopher wrote: > > On Feb 19, 2011, at 11:25 AM, Jack Howarth wrote: > > > Is anyone able to bootstrap llvm-gcc42 svn on x86_64-apple-darwin10? Currently it is > > failing here with... > > It was broken. I think I've fixed it in reverting 125960. > > -eric Eric, The llvm-gcc42 bootstrap is fixed in

On 23.11.2012, at 15:12, john skaller <skaller at users.sourceforge.net> wrote: > > On 23/11/2012, at 5:46 PM, Sean Silva wrote: > >> Adding LLVMdev, since this is intimately related to the optimization passes. >> >>> I think this is roughly because some function level optimisations are >>> worse than O(N) in the number of instructions. >>

Is anyone able to bootstrap llvm-gcc42 svn on x86_64-apple-darwin10? Currently it is failing here with... /sw/src/fink.build/llvm-gcc42-2.9-0/llvm_gcc42_objdir/./prev-gcc/xgcc -B/sw/src/fink.build/llvm-gcc42-2.9-0/llvm_gcc42_objdir/./prev-gcc/ -B/sw/lib/llvm-gcc-4.2/x86_64-apple-darwin10/bin/ -c -g -O2 -mdynamic-no-pic -DIN_GCC -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes