[R] RNG Cycle and Duplication

length of 2^32. So, anybody can explain this? And any improvement to the implementation can be made to increase the cycle length like the Wichmann-Hill method? ======== Shengqiao Li Research Associate The Department of Statistics West Virginia University Morga

Re: [R] RNG Cycle and Duplication

lues. You may not get the exact numbers, but they should be close. So how to explain above problem? I need generate a large sample without any ties, it seems to me "Wichmann-Hill" is only choice right now. Shengqiao Li The Departm

[R] Wichmann-Hill Random Number Generator and the Birthday Problem

ts, duplications were surprisingly not observed. It seems that Wichmann-Hill has a much larger cycle than the one documented! Anybody can solve this puzzle? Regards, Shengqiao Li Department of Statistics West Virgina Unversity ==Testing=== RNGkind(kind="Knu

Re: [R] Wichmann-Hill Random Number Generator and the Birthday Problem

On Sun, 17 Aug 2008, Duncan Murdoch wrote: Shengqiao Li wrote: Dear all, Recently I am generating large random samples (10M) and any duplicated numbers are not desired. We tried several RNGs in R and found Wichmann-Hill did not produce duplications. The duplication problem is the

Re: [R] Wichmann-Hill Random Number Generator and the Birthday Problem

ence is not satisfied. Yet again, you are trying to do things that any good text on simulation would warn you against, and which (in a thread on R-devel) you have already been told a good way to do. On Sun, 17 Aug 2008, Shengqiao Li wrote: On Sun, 17 Aug 2008, Duncan Murdoch wrote: Sh

Re: [R] Wichmann-Hill Random Number Generator and the Birthday Problem

upplied uniform generators return 32-bit integer values that are converted to doubles, so they take at most 2^32 distinct values and long runs will return duplicated values." Shengqiao Li -- O__ Peter Dalgaard Øster Farimagsgade 5, Entr.B c/ /'_ --- Dept. of

[R] How to do knn regression?

use band width to define neighborhood size. This contrasts to knn's variable band width via fixing a k. Are there any such functions I can use in R packages? Your help is highly appreciated. Shengqiao Li __ R-help@r-project.org mailing li

Re: [R] How to do knn regression?

Date: Fri, 19 Sep 2008 07:00:33 + (UTC) From: "Hans W. Borchers" <[EMAIL PROTECTED]> Subject: Re: [R] How to do knn regression? To: [EMAIL PROTECTED] Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=us-ascii Shengqiao Li stat.wvu.edu> write

[R] How to convert backslash to slash?

How to use sub, gsub, etc. to replace "\" in a string to "/"? For example,convert "C:\foo\bar" to "C:/foo/bar". Thanks, Shengqiao Li __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo

Re: [R] How to convert backslash to slash?

On Tue, 23 Sep 2008, Duncan Murdoch wrote: On 23/09/2008 4:00 PM, Shengqiao Li wrote: How to use sub, gsub, etc. to replace "\" in a string to "/"? For example,convert "C:\foo\bar" to "C:/foo/bar". If those are R strings, there are no backslashes i

Re: [R] How to convert backslash to slash?

On Wed, 24 Sep 2008, Duncan Murdoch wrote: Shengqiao Li wrote: On Tue, 23 Sep 2008, Duncan Murdoch wrote: On 23/09/2008 4:00 PM, Shengqiao Li wrote: How to use sub, gsub, etc. to replace "\" in a string to "/"? For example,convert "C:\foo\bar" to "C

Re: [R] How to convert backslash to slash?

ackslashes in memory. For instance: #not run now s<- `C:\Acer' print(s) [1] "C:\\Acer" On Wed, Sep 24, 2008 at 8:53 AM, Shengqiao Li <[EMAIL PROTECTED]> wrote: On Wed, 24 Sep 2008, Duncan Murdoch wrote: Shengqiao Li wrote: On Tue, 23 Sep 2008, Duncan Murdoch wrote

[R] Print call condensely

datasets methods base print.lm behaves simimarly. Is there any way to cat such a call wihtout the big space? Thanks a lot. Shengqiao Li __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read th