Re: [R] Goodman-Kruskal tau

2007-08-07 Thread Antti Arppe
RC; U.tau.RC <- (N-1)*(dat.rows-1)*tau.RC; # Chi-squared approximation for H0 according to Margolin & Light 1974, see also Liebetrau 1983 p.tau.RC <- pchisq(U.tau.RC,df=(dat.rows-1)*(dat.cols-1),lower=FALSE); results <- data.frame(tau.RC, tau.CR, p.tau.RC, p.tau.CR, var.tau.RC,

[R] H0 and H1 probabilities in Cohen's Effect Size w for X2 test

2007-03-09 Thread Antti Arppe
1 Have I missed or misunderstood something here altogether? Should the alternative H0 probabilities be estimated by e.g. some sort of fitting? Any pointers, suggestions or assistance would be greatly appreciated. -Antti Arppe -- =======

Re: [R] Multiple logistic regression

2006-03-09 Thread Antti Arppe
n fact already been in implemented in an available library. So, is anyone on this list aware of such functions/libraries? Regards, -Antti Arppe ====== Antti Arppe - Master of Science (Engineering) Researcher & doctoral student (

[R] lambda, uncertainty coefficient (& Somers D)

2006-04-18 Thread Antti Arppe
more general RxC tables? This was queried in 1999, but no response seemed then to be forthcoming. Thanks and regards, -Antti Arppe -- ====== Antti Arppe - Master of Science (Engineering) Researcher & doctoral student (Ling

Re: [R] Neural Nets (nnet) - evaluating success rate of predictions

2007-05-08 Thread Antti Arppe
Nathaniel, On Mon, 7 May 2007, [EMAIL PROTECTED] wrote: > Date: Sun, 6 May 2007 12:02:31 + (GMT) > From: nathaniel Grey <[EMAIL PROTECTED]> > > However what I really want to know is how well my nueral net is > doing at classifying my binary output variable. I am new to R and I > can't figure o

Re: [R] Neural Nets (nnet) - evaluating success rate of predictions

2007-05-10 Thread Antti Arppe
etter prediction results or 2) significantly different (better or worse) results, so one can/should adjust the interpretation of the standardized d-value in the code accordingly. In the former case one should use the one-tailed value, and in the later case the two-tailed value. -Antti

[R] Reading in a table with ISO-latin1 encoding in MacOS-X (Intel)

2006-06-08 Thread Antti Arppe
on with 'read.table', or might the problem with latin1-to-utf conversion be somewhere else? Appreciating any help on this matter, -- == Antti Arppe - Master of Science (Engineering) Researcher & doctoral student (Linguistics) E-mail: [EM

Re: [R] Reading in a table with ISO-latin1 encoding in MacOS-X (Intel)

2006-06-22 Thread Antti Arppe
s in the header, without no fuss. Thanks for your advice, and wishing all a good Midsummer, -Antti Arppe On Thu, 8 Jun 2006, Peter Dalgaard wrote: so one can only guess that you have a local or Mac-specific setup issue. On Thu, 8 Jun 2006, Prof Brian Ripley wrote: If so, you need to