search for: feasibl

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,...

...ol2, col3, col4) dir <- c(rep("<=", 3), rep(">=", 3), rep("==", 2), ">=") rhs <- c(rep(0, 7), 1, 0) sol <- Rglpk_solve_LP(obj, mat, dir, rhs, types = NULL, max = FALSE, bounds = c(-100,100), verbose = TRUE) The R output says there is no feasible solution, but e.g. (-2.3756786, 0.3297676, 2.0459110, 2.3756786) is feasible. The output is "GLPK Simplex Optimizer, v4.42 9 rows, 4 columns, 19 non-zeros 0: obj = 0.000000000e+000 infeas = 1.000e+000 (2) PROBLEM HAS NO FEASIBLE SOLUTION" One other thing, a possible bug - if...

...tine - 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, I set in my header file something like #define MINF -1.0e120 and test if we are in a non-feasible region, then setting the log-composite likelihood to MINF. The problem I see with this approach is that for a quite large non-feasible region, we have a kind of plateau where the log-composite likelihood is constant and may have potential issues with the optimizer. The other issue is that th...

...i=rbind(c(1,1,1,1,1)), ci=c(1) It works perfekt in the previews way, adding a second constraint, to simulize the equal to 1 constraint, it doesn't work anymore: constrOptim(c(0,0,0.5,0,0.5), fkt, NULL, ui=rbind(c(1,1,1,1,1),c(-1,-1,-1,-1,-1)), ci=c(1,-1)) the error message: initial value not feasible Thats the structure of the data file: test Date CPURNSA_2 SPTR_2 JNGWUS_2 CORP FNAR_2 CRY_2 1 28.02.2001 0.0040 -0.0912 -0.0043 -0.0104 0.0098 -0.0181 2 31.03.2001 0.0023 -0.0634 0.0088 -0.0519 0.0078 0.0013 3 30.04.2001 0.0040 0.0777 0.0202 0.0202 -0.00...

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 fort...

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 satisfied. In case that this is a typo of the manual, I let ui=-ui and ci=-ci and...

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 connecte...

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 should emulate, just like it makes virtio disks accessible via standard interrupts? --...

There is a contradiction between what the help page says and what constrOptim actually does with the constraints. The issue is what happens on the boundary. 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 abo...

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 feasible to have clang generates bit code files for the source c...

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...

...n two instances of samba on the same box using a chroot. No question about "does this provide enhanced security", "is there any other option", "is my hardware high enough", "is it a good idea to let people work during a network outage", simply, "is it feasible/are there any caveat" According to documentation, winbind offline logon is only used with pam_winbind, that why it has been left apart (moreover it won't be able to let users not in cache to access files and there is no doc about cache lifetime, size, etc.)

...e options mentioned in the original thread, but I have been advised that there may be better ways if I present the actual problem with a reproducible example. In principle the problem can be solved by linear programming, so I include code for my attempt at this via RGLPK. It says that there is no feasible solution, but the solution is known analytically in the case below. Here is the precise problem: Minimise, over 100?1 real vectors v, Max_i(|v_i|) such that X'v=e_2, where X is a given 100?2 matrix and e_2 =(0,1)'. The v_i are the elements of v. I have put the actual X matrix at the en...

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...

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

...rage record from group A. > > I've used a Monte Carlo approach to estimate confidence intervals but thought another view could be obtained by using tree() to split the records into two disparate groups and run these two groups separately through the Monte Carlo model. > > Is this feasible? > > thanks > > > > > > > > > > > > > >

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 A&...

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 -- Regards Agnello D'souza -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20100815/945897ec/attachment-0002.h...

...ive 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 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, &quo...