similar to: Reciprocal Mill's Ratio

In the R source, nmath/pnorm.c contains the code for a rational function approximation for the normal cdf. These constants are listed: const double a[5] = { 2.2352520354606839287, 161.02823106855587881, 1067.6894854603709582, 18154.981253343561249, 0.065682337918207449113 }; The source file cites a paper by Cody (1969) and states that these

Hello, I was interested in trying to write an R script to calculate a UCL for a lognormal distribution using the Chebyshev Inequality — MVUE Approach (based on EPA’s guidance found in http://www.epa.gov/oswer/riskassessment/pdf/ucl.pdf). This looks like it should be straight forward, but I am need to calculate an MVUE for the population mean and an MVUE for the population variance, which requires

Full_Name: James Michael Rath Version: all (I think) OS: doesn't matter Submission from: (NULL) (129.116.226.162) The code for pnorm in R was adapted from a Fortran library published in the ACM TOMS journal. The published version had a typographical error, though, which was pointed out in a second article published three years after the original. The error was that a macro/variable named

I have read some very good reviews comparing R (or Splus) to SAS. Does anyone know if there are any reviews comparing R (or Splus) to Stata? I am trying to get others to try R in my department, and I have never used Stata. Regards, -Cody Cody Hamilton, Ph.D Institute for Health Care Research and Improvement Baylor Health Care System (214) 265-3618 This e-mail, facsimile, or letter

Hi all, Looking to calculate the expected mean and variance of a ratio distribution where the source distributions are gaussian with known parameters and sample values are correlated. I see (from wikipedia: http://en.wikipedia.org/wiki/ Ratio_distribution#Gaussian_ratio_distribution) that this calculation is quite involved, so I'm hoping that someone has already coded a function to

(1) ...need to speed up a monte-carlo sampling...any suggestions about how I can get R to use all 8 cores of a mac pro would be most useful and very appreciated... (2) spent the last few hours trying to get pnmath to compile under os- x 10.5.4... using gcc version 4.2.1 (Apple Inc. build 5553) as downloaded from CRAN, xcode 3.0... ...xcode 3.1 installed over top of above after

Dear group, ? When running the installation test: ? testInstalledPackages("both",outDir='c:/Test') ? I got the following message: Running ?testci.R? comparing ?testci.Rout? to ?testci.Rout.save? ... files differ in number of lines: Please note the test does not result in 'OK' as do the other tests.? Is this a concern? Regards, ???-Cody Hamilton

Does R graphics have a way to easily label the horizontal axis by the reciprocal of the scaled value? -- View this message in context: http://r.789695.n4.nabble.com/Graphics-Reciprocal-labeling-tp3949054p3949054.html Sent from the R help mailing list archive at Nabble.com.

Sounds like a reasonable fit for a target-specific DAG combine. I suspect a target specific node wouldn't be necessary and the patterns could be matched directly. -Jim On Sep 20, 2012, at 3:26 PM, Weiming Zhao <weimingz at codeaurora.org> wrote: > Hi, > > In relaxed/fast math mode, if we can convert a/b to a * (1/b), we may get more performance when (1) “b” is loop

I''m happy to announce the availability of RJS Templates for Rails published by O''Reilly. The book covers all aspects and features of RJS that are included in Rails 1.1. It also walks through a few examples, debugging with FireBug, and finishes off with some reference material. The book is 56 pages and is available in PDF format. I''m really happy with how the book has

If I run "rsync -ruv <local> <remote>" twice, no files are copied the second time - as expected. However, if I follow "rsync -ruv <local> <remote>" with "rsync -ruv <remote> <local>", all files are copied from <remote> to <local>. I suspect this is because the timestamps of <remote> files are of when they were

Hi, In relaxed/fast math mode, if we can convert a/b to a * (1/b), we may get more performance when (1) "b" is loop invariant or (2) arch has faster reciprocal instruction (e.g. recipe/recips on ARM) or (3) arch has no vector div, but has vector mul and recip. So ,with this node type, a div node can be converted to a mul and a recip when desired. Then, each arch can further

Hi, I am new to Rails and got the "Agile Web Dev with Rails book", following along with the examples...starting the Depot sample app, but am running into segmentation faults and my WEBrick console looks like this: <error> http://127.0.0.1:3000/admin/ -> /admin/show/1 c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller ration.rb:45: [BUG] Segmentation fault

I just found this one: http://tinyurl.com/3c3mfa David, are there any other RSpec books in the works? With Regards, Cody Skidmore

Does the wiki actually send out emails to KaranbirSingh, RalphAngenendt, RussHerrold, TimVerhoeven, AkemiYagi, NedSlider, AlanBartlett, MarcusMoeller, TimothyLee, LaurentWandrebeck, TimoSchoeler, GaoHu, and AlainRegueraDelgado with every edit? It makes me a little nervous updating the T43 page or my homepage. I don't want to spam anyone. Cheers, Cody Jackson

Dear R-users, I learned today that there exists an interesting topic in numerical analysis names "best polynomial approximation" (BSA). Given a function f the BSA of degree k, say pk, is the polynomial such that pk=arginf sup(|f-pk|) Although given some regularity condition of f, pk is unique, pk IS NOT calculated with least square. A quick google tour show a rich field of research

Hi folks, I know, this is a fairly common question and I am really disappointed that I could not find a solution. I am trying to calculate Mahanalobis distances in a data frame, where I have several hundreds groups and several hundreds of variables. Whatever I do, however I subset it I get the "system is computationally singular: reciprocal condition number" error. I know what it means

Dear All: I am using lmer() {lme4} to analyze results from a reciprocal transplant experiment where the response variable is modeled as a function of two fixed effects and their interaction. Example data follow: #library(lme4) #library(gmodels)

Yes, what I mean is a target independent node in the ISD::NodeType enum. I already did the node transformation DAGCombiner and target-specific lowering in the first place. It worked. But introducing a specific node will make the logic more clear. For example, in ARM, FDIV is a scalar operation. So, after DAGCombiner and Vector Type legalize, vectorized FDIV has been expanded into scalar versions,

I'm a newb to linux so please be patient. Running CentOS 4. Using Bash. I'm not sure what happened, but now for some reason /sbin, /usr/sbin, and /usr/local/sbin are all missing from the path. I am su'd as root. I've tried several different methods to put this back including: PATH="/usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin:/usr/X11R6/bin:/hom