search for: feasibility

I have a set of linear equations and would like to find any feasible solution. A simplex solution works in Case 1 below, but not in Case 2. I would be grateful for any help. Case 1: Find any feasible solution for the set of linear equations: a + b + c = 5 a + b + 0c = 4 0a + b + c = 4 Solution - a feasible (and unique) solution is a=1, b=3, c=1. The following R code

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

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 at all, working with a dataset I try to optimize a non-linear function with constraint. test<-read.csv2("C:/Users/Herb/Desktop/Opti/NORM.csv") fkt<- function(x){ a<-c(0) s<-c(0) #Minimizing square error for(j in 1:107){ s<-(test[j,2] - (x[1] * test[j,3]) - (x[2] * test[j,4]) - (x[3]*test[j,5]) - (x[4]*test[j,6]) - (x[5]*test[j,7]))^2 a<- a+s} a<-as.double(a)

Hello, Would it be feasible to use the internal lld file format as the native executable format for an OS? Are there performance or space considerations that would make this a poor choice? Cheers, Shea Levy P.S. please CC me on replies, I'm not subscribed.

hi! I would like to know if it is feasible to use the dragon egg gcc plugin to automatically convert fortran code to c. Having found that it is possible to output llvm byte code back to c (at least something like this gave me this impression/hope: llc -march=c -o test.c) I am hoping to use dragon egg to generate the byte code from fortran 90 which than output to c. Does this seem feasible at

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

Hello. I'm wondering if a scenario which I'm tasked to setup would be feasible to create with libvirt. The scenario is; we want to have one computer running ns-3[1] which will simulate a MANET[2] this computer will be connected to a second computer(how is not quite clear to me yet) this second computer will be running several Xen or LXC domains where each domain is connected to a node in

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

...The help page says The feasible region is defined by ?ui %*% theta - ci >= 0?, but the R code for constrOptim reads if (any(ui %*% theta - ci <= 0)) stop("initial value not feasible") The following example shows that when the initial point is on the boundary of the feasibility region, you get the above error message and execution stops. > fn <- function(x) { return(sum(x)) } > > ui <- diag(rep(1,2)) > ci <- matrix(0,nrow=2,ncol=1) > constrOptim( c(0,0), fn, NULL, ui, ci ) Error in optim(theta.old, fun, gradient, control = control, method = met...

Hello Mentors, I have a very naive idea to get IPRA woking at link time and thus extending its scope to intermodule. I seek some help if it seems to be a feasible idea. So idea is to take advantage of LTO's capability to work with bit code files. LTO can optimize number of bitcode files and combine them into a big module. LTO then generates native code for the big module. So does it seem

Hi everyone, How feasible would it be to get samba to back-up every version of a file that the Windows user saves? Specifically: 1) can you trap the "file saved" event somehow in a meaninful way? 2) is it possible to distinguish something like Access MDB access - ie, continual updates of some sort - from a regular file save? 3) what sort of level of knowledge of Samba, C/C++,

Le 17/03/2015 11:54, Sven Schwedas a ?crit : > Okay, let's recap: > > ? Old hardware with low RAM and no VT-x/AMD-V support > (It's an x86 box with some Linux, right?) > ? You have an existing domain > ? And you want to add an DC on a second site to it > > Anything else you should have told us the first mail so nobody's time is > wasted with suggestions

Dear All, Thank you for the replies to my first thread here: http://r.789695.n4.nabble.com/global-optimisation-with-inequality-constraints-td3799258.html. So far the best result is achieved via a penalised objective function. This was suggested by someone on this list privately. I am still looking into some of the options mentioned in the original thread, but I have been advised that there may

Shea, Feasible? Sure, anything is feasible. A good idea? Not really. The internal lld file format is an _intermediate_ data structure designed to make creating the final executable straightforward and fast. It isn't designed to be an executable format itself. In fact, the reason why linkers can often be slow is because the intermediate and final object file formats are conflated. davez On

Hello, I need to have the tftpdir_rw_t and samba_share_t SELinux context on the same directory. How can we do this? Is it feasible to have more than one SELinux context? Thanks, Bernard

> 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

I've got another idea for a tblgen extension but I don't have a good feel for how feasible it is. Hopefully someone can provide guidance. What I want to do is something like this: class C1<int A, string B> { int foo = A; string bar = B; } class Bb<int A> : C1<A, "foo">; class Cb<int A> : C1<A, "bar">; class C2<C1 Base, int

we have multiple servers approx 10 and each has about 100 GB of data in the /var/lib/mysql dir , excluding tar , mysqldump and replication how do we take backup for these databases on to a remote machine and store them datewise , ( the remote machine is a 2TB HDD ) currently tar is not feasible as the data is too huge and the same goes with mysqldump suggestion will be of great help --

Can you give an example of where you would use such a feature? It seems entirely too abstract (at least to me) at the moment. On Tue, Apr 7, 2009 at 1:11 AM, David Greene <dag at cray.com> wrote: > I've got another idea for a tblgen extension but I don't have a good feel > for > how feasible it is. Hopefully someone can provide guidance. > > What I want to do is