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Total 25 documents matching your query.

1. as.character problem (score: 1)
Author: "Kyle Roberts" <kroberts@unt.edu>
Date: Wed, 10 Nov 2004 13:35:19 -0600
Her
/archives/html/s-news/2004-11/msg00085.html (7,104 bytes)

2. Re: as.character problem (score: 1)
Author: "Kyle Roberts" <kroberts@unt.edu>
Date: Wed, 10 Nov 2004 16:38:00 -0600
kro
/archives/html/s-news/2004-11/msg00086.html (9,743 bytes)

3. "&" operant (score: 1)
Author: "Kyle Roberts" <kroberts@unt.edu>
Date: Mon, 11 Oct 2004 13:37:26 -0500
Dear All, A quick question. Is there a way to do a mathematical "&" operation instead of a logical "&" operation in S-PLUS? Thanks, Kyle ** J. Kyle Roberts, Ph.D. Assistant Professor of Educational R
/archives/html/s-news/2004-10/msg00030.html (6,475 bytes)

4. Stacking Data (score: 1)
Author: "Kyle Roberts" <kroberts@unt.edu>
Date: Mon, 13 Sep 2004 09:48:43 -0500
a
/archives/html/s-news/2004-09/msg00064.html (6,811 bytes)

5. GLMM in lme4 question (score: 1)
Author: "Kyle Roberts" <kroberts@unt.edu>
Date: Wed, 21 Jul 2004 15:35:27 -0500
Quick question. In the output for a GLMM object in the lme4 library in R, there is a line that reads: Estimated scale (compare to 1) 0.9370735 Can I think of this as extra-binomial dispersion? If so,
/archives/html/s-news/2004-07/msg00111.html (6,879 bytes)

6. Gaussian probability estimates (score: 1)
Author: "Kyle Roberts" <kroberts@unt.edu>
Date: Mon, 26 Jul 2004 20:57:21 -0500
Does anyone know if it is possible to extract the probability values for each individual from the Gaussian probability density function in lme? Thanks, Kyle ** J. Kyle Roberts, Ph.D. Assistant Profes
/archives/html/s-news/2004-07/msg00128.html (6,514 bytes)

7. Converting from correlation to covariance (score: 1)
Author: "Kyle Roberts" <kroberts@unt.edu>
Date: Tue, 04 May 2004 16:14:09 -0500
I have a matrix with correlations and a corresponding vector containing the SDs of each of the variables. Can anyone think of a quick way to convert the correlations matrix to a covariance matrix (I
/archives/html/s-news/2004-05/msg00021.html (6,856 bytes)

8. Re: bootstrapping ICCs (score: 1)
Author: "Kyle Roberts" <kroberts@unt.edu>
Date: Wed, 14 Apr 2004 15:11:12 -0500
I have attached a program for bootstrapping rows of data. I hope that it helps. Kyle mat<-rbind(c(1,2,3),c(4,5,6),c(7,8,9)) mat n.people<-2 people in n.people data.index<-matrix(sample(nrow(mat), siz
/archives/html/s-news/2004-04/msg00067.html (9,334 bytes)

9. Non-normal data (score: 1)
Author: "Kyle Roberts" <kroberts@unt.edu>
Date: Wed, 01 Oct 2003 16:14:11 -0500
Dear All, I have used rmvnorm in the past for data generation. Can someone point me in the right direction on generating data based on non-normal distributions (e.g., highly skewed or kurtotic)? Than
/archives/html/s-news/2003-10/msg00011.html (6,707 bytes)

10. lme and nlme in R (score: 1)
Author: "Kyle Roberts" <kroberts@unt.edu>
Date: Tue, 17 Jun 2003 13:09:09 -0500
Does anyone know if R will run lme and nlme? I keep getting an error that the function is unrecognized. Kyle ** J. Kyle Roberts, Ph.D. Assistant Professor of Educational Research University of North
/archives/html/s-news/2003-06/msg00119.html (6,597 bytes)

11. predicted line plots in lme (score: 1)
Author: "Kyle Roberts" <kroberts@unt.edu>
Date: Tue, 24 Jun 2003 08:55:53 -0500
Dear All, I understand from Pinheiro and Bates (p. 152) that you can look at the predicted regression lines from 2 lme objects by the command: plot(comparePred(lme.object.1, lme.object.2)) But what i
/archives/html/s-news/2003-06/msg00173.html (6,919 bytes)

12. lme question (again) (score: 1)
Author: "Kyle Roberts" <kroberts@unt.edu>
Date: Thu, 26 Jun 2003 09:41:18 -0500
Dear All, I recently posted a question to the group but got no response, so I will try again in another way. If I use the command: plot(augPred(lme.object)) I get a graph with the fitted regression l
/archives/html/s-news/2003-06/msg00195.html (6,915 bytes)

13. Re: extracting r squared from lm (score: 1)
Author: "Kyle Roberts" <kroberts@unt.edu>
Date: Fri, 11 Apr 2003 10:39:15 -0500
o
/archives/html/s-news/2003-04/msg00084.html (8,180 bytes)

14. Random number generator (score: 1)
Author: "Kyle Roberts" <kroberts@unt.edu>
Date: Wed, 12 Mar 2003 13:40:59 -0600
Is anyone aware of articles that have been published evaluating the random number generator for S-PLUS. Kyle ** J. Kyle Roberts, Ph.D. Assistant Professor of Educational Research University of North
/archives/html/s-news/2003-03/msg00092.html (6,880 bytes)

15. Re: bootstrapping (score: 1)
Author: "Kyle Roberts" <kroberts@unt.edu>
Date: Mon, 18 Nov 2002 10:57:16 -0600
I wrote the following program for my students to illustrate sampling rows. It actually creates a random number data index based on the number of rows in your dataset and the number of people (rows)
/archives/html/s-news/2002-11/msg00154.html (9,412 bytes)

16. Re: Adjusted R square. (score: 1)
Author: "Kyle Roberts" <kroberts@unt.edu>
Date: Tue, 01 Oct 2002 09:39:11 -0500
For the Wherry correction I use: wherry.corr<-(1-((((sample.size*2)-1)/((sample.size*2)-2))*(1-r.squared))) I hope that this helps. Kyle ** J. Kyle Roberts, Ph.D. Assistant Professor of Educational
/archives/html/s-news/2002-10/msg00002.html (8,273 bytes)

17. G-Theory Script (score: 1)
Author: "Kyle Roberts" <kroberts@unt.edu>
Date: Wed, 04 Sep 2002 14:06:11 -0500
Has anyone written a function to perform a Generalizability Theory study in S-PLUS? I don't want to reinvent the wheel. Thanks, Kyle ** J. Kyle Roberts, Ph.D. Assistant Professor of Educational Resea
/archives/html/s-news/2002-09/msg00011.html (6,737 bytes)

18. Re: Bootstrapping for survival analysis (score: 1)
Author: "Kyle Roberts" <kroberts@unt.edu>
Date: Fri, 14 Jun 2002 13:02:31 -0500
Hello All, This is a quick solicitation for the above topic. I am the president and program chair of the AERA Special Interest Group (SIG) "Inferential and Descriptive Bootstrapping and Resampling."
/archives/html/s-news/2002-06/msg00129.html (8,548 bytes)

19. GENOVA (score: 1)
Author: "Kyle Roberts" <kroberts@unt.edu>
Date: Mon, 20 May 2002 16:04:59 -0500
Does anyone know of an S-PLUS script that has been written to conduct a generalizability theory study like Brennan's GENOVA program? Thanks, Kyle ** J. Kyle Roberts, Ph.D. Assistant Professor of Educ
/archives/html/s-news/2002-05/msg00144.html (6,677 bytes)

20. Re: R^2 estimates in lme (score: 1)
Author: "Kyle Roberts" <kroberts@unt.edu>
Date: Tue, 09 Apr 2002 11:22:20 -0500
Bernd and others, The multilevel issue is one that I raised in a session at AERA and found that there was no good answer. Snijders and Bosker (1999) give some recomendations for a two-level model, bu
/archives/html/s-news/2002-04/msg00076.html (12,214 bytes)

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