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1. Re: statistical terminology controversy (score: 1)
Author: "Ravi Varadhan" <rvaradha@jhsph.edu>
Date: Wed, 18 May 2005 17:48:53 -0400
l
/archives/html/s-news/2005-05/msg00121.html (19,021 bytes)

2. Re: off-topic sort of: Documentation for MinGW (score: 1)
Author: Ravi Varadhan <rvaradha@jhsph.edu>
Date: Tue, 03 Feb 2004 17:06:08 -0500
The following should do it: g77 -O2 -c test.f dllwrap -o test.dll --export-all-symbols test.o dyn.load("test.dll") Also, refer to Venables and Ripley's "S Programming" (Appendix A.4) for more details
/archives/html/s-news/2004-02/msg00017.html (8,025 bytes)

3. e (score: 1)
Author: Ravi Varadhan <rvaradha@jhsph.edu>
Date: Wed, 07 Jan 2004 13:52:50 -0500
There is also a nice paper by Kent and Quigley (Biometrika, 1988) that describes a measure of dependence between the explanatory variables and the response variable, under more general regression se
/archives/html/s-news/2004-01/msg00022.html (11,827 bytes)

4. Re: rmvnorm in R? (score: 1)
Author: Ravi Varadhan <rvaradha@jhsph.edu>
Date: Fri, 21 Nov 2003 12:03:13 -0500
s
/archives/html/s-news/2003-11/msg00139.html (6,964 bytes)

5. Re: confounding and intervening factors? (score: 1)
Author: u>
Date: Mon, 27 Oct 2003 14:15:42 -0500
considerations. Journa
/archives/html/s-news/2003-10/msg00269.html (9,306 bytes)

6. Re: power of a matrix (score: 1)
Author: Ravi Varadhan <rvaradha@jhsph.edu>
Date: Thu, 03 Jul 2003 12:24:11 -0400
Spencer's solution doesn't work a non-integer power when the eigen values are real and negative (as it can happen for a symmetric matrix). However, if his function is modified slightly so that in th
/archives/html/s-news/2003-07/msg00022.html (14,368 bytes)

7. Re: probability question (score: 1)
Author: Ravi Varadhan <rvaradha@jhsph.edu>
Date: Tue, 22 Jul 2003 11:04:25 -0400
i
/archives/html/s-news/2003-07/msg00153.html (9,113 bytes)

8. Re: Toeplitz matrix (score: 1)
Author: Ravi Varadhan <rvaradha@jhsph.edu>
Date: Tue, 29 Jul 2003 14:38:15 -0400
r
/archives/html/s-news/2003-07/msg00196.html (7,742 bytes)

9. Re: FW: Gumbel Distribution pdf (score: 1)
Author: Ravi Varadhan <rvaradha@jhsph.edu>
Date: Wed, 21 May 2003 14:17:52 -0400
Su
/archives/html/s-news/2003-05/msg00126.html (8,747 bytes)

10. Re: FW: Gumbel Distribution pdf (score: 1)
Author: Ravi Varadhan <rvaradha@jhsph.edu>
Date: Wed, 21 May 2003 14:22:27 -0400
e:
/archives/html/s-news/2003-05/msg00127.html (8,826 bytes)

11. Re: Propensity score models (score: 1)
Author: Ravi Varadhan <rvaradha@jhsph.edu>
Date: Tue, 22 Apr 2003 14:03:33 -0400
m
/archives/html/s-news/2003-04/msg00140.html (8,932 bytes)

12. Re: mean of Gompertz (score: 1)
Author: Ravi Varadhan <rvaradha@jhsph.edu>
Date: Tue, 07 Jan 2003 13:29:05 -0500
Hi Neal: Attached find a "DLL" and a function that can compute the "Ei(x)" function. You need to first load the DLL using: dyn.load("ei.dll") then use the function, e.g. [1] 0.4542199 The function is
/archives/html/s-news/2003-01/msg00020.html (9,621 bytes)

13. Re: Beta-binomial rv generator (score: 1)
Author: Ravi Varadhan <rvaradha@jhsph.edu>
Date: Sat, 07 Sep 2002 00:55:48 -0400
One simple technique is to make use of the fact that the beta-binomial is a mixture of binomial and beta distributions. Here is a simple function to generate beta-binomial random variables: betabinom
/archives/html/s-news/2002-09/msg00043.html (8,272 bytes)

14. Re: xlab with apply, hist (score: 1)
Author: Ravi Varadhan <rvaradha@jhsph.edu>
Date: Tue, 24 Sep 2002 12:49:00 -0400
I have had this problem before and have reported it to Insightful last year. This is, as Tony Plate said, due to a side effect due to the attempt to use a "fast" method for apply. A simple way to avo
/archives/html/s-news/2002-09/msg00169.html (11,758 bytes)

15. Random number generation in S (score: 1)
Author: Ravi Varadhan <rvaradha@jhsph.edu>
Date: Sun, 04 Aug 2002 23:10:17 -0400
I am interested in generating random numbers from a positive stable distribution for alpha (the stability parameter) = 1/2. I am able to do this based on the formula (Eq.2.2) given in Chambers et al
/archives/html/s-news/2002-08/msg00024.html (7,773 bytes)

16. Re: Random number generation in S (score: 1)
Author: Ravi Varadhan <rvaradha@jhsph.edu>
Date: Mon, 05 Aug 2002 11:11:41 -0400
I would like to thank Prof. Ripley and Bert Gunter for their replies. However, my primary question on how to compare the two methods for generating pseudo-random numbers from a positive-stable ditsri
/archives/html/s-news/2002-08/msg00028.html (11,251 bytes)

17. Re: "Merge" very slow (score: 1)
Author: Ravi Varadhan <rvaradha@jhsph.edu>
Date: Wed, 10 Jul 2002 15:28:27 -0400
I had the same experience with Splus5 on unix, a couple of years ago. We reported that to Mathsoft, but I don't think it was ever resolved. May be you should do the merge in R to create your new dat
/archives/html/s-news/2002-07/msg00055.html (9,303 bytes)

18. Re: algorithm for logarithmic values in a vector (score: 1)
Author: Ravi Varadhan <rvaradha@jhsph.edu>
Date: Thu, 25 Jul 2002 15:16:45 -0400
you can do the following: Lvec <- c(0.001, 0.01, 0.1, 1, 10, 100, 1000 ) mult <- 1:9 as.vector(outer(Lvec, mult, "*")) Hope this helps, Ravi.
/archives/html/s-news/2002-07/msg00192.html (8,544 bytes)

19. Loading a library in Splus6 (score: 1)
Author: Ravi Varadhan <rvaradha@jhsph.edu>
Date: Sun, 24 Mar 2002 16:59:11 -0500
I am using Splus6 on Windows platform. I am trying to load the bootstrap library called "BOOT" , which came along with Hinkley and Davison's book on bootstrap. I was successful in getting it to work
/archives/html/s-news/2002-03/msg00176.html (6,916 bytes)

20. Re: Loading a library in Splus6 (score: 1)
Author: Ravi Varadhan <rvaradha@jhsph.edu>
Date: Mon, 25 Mar 2002 11:37:41 -0500
Thanks to Prof. Ripley and Angelo Canty for suggesting the download of the version of BOOT library for Splus6. They pointed out the following websites to download the new version: http://www.stats.ox
/archives/html/s-news/2002-03/msg00182.html (7,147 bytes)


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