search for: literature

Howdy! Could somebody point me to some good introductory readings about data mining and descriptive data analysis? I'm a psychologist and a couple of times I realized that some things just don't appear in psychological literature, e.g. I've never seen a box plot anywhere in psych journals so I'm not familiar with them. The R help function is great when it comes to explaining how to use a feature and I wonder if that would also be a good place for literature recommendations? A second thing I need to find some inf...

...(6 and 8) are on the other end of > sample. so the number of obs. for the three thirds for line() are {8, 3, 8} in line() [also, after your patch, right?] whereas in MMline() they are as they should be, namely {6, 7, 6} But the {8, 3, 8} split is not at all what all "the literature", including Tukey himself says that "should" be done. (Other literature on the topic suggests that the optimal sizes of the split in three groups depends on the distribution of x ..) OTOH, MMline() does exactly what "the literature" and also the reference on the ?line...

Hi, Are you guys interested in implementing if-conversion as a GSoC 2015 project? Last year, I did a literature review about approaches of if-conversion and the if-conversion in LLVM. This was the undergraduate thesis of my bachelor degree. It seems that, the if-conversion used in LLVM is a very simple approach instead of following the literature. So I want to implement the approaches in the literature in LL...

...1* for the *Center for the study of Complex systems - University of Michigan*. I implemented various *algorithms (ant colony, random walk etc.)* related to computational intelligence in Repast S (*Coded in Groovy, Java*) and wrote *extensive documentations and tutorial* for the related models with *literature reviews * on the topics. My *contributions to Repast S was a part of the latest release of the software*. The detailed documentation and code can be found here:http://code.google.com/p/cscs-repast-demos/wiki/Mudit I have also worked on various projects related to implementation of Machine Learning...

Hi, all On the website, it says "... There are several well-known ways to do this in the literature. LLVM uses a SelectionDAG based instruction selector." I want to know more about the SelectionDAG, maybe the one which guide LLVM SelectionDAG implementation. Any suggestion? Thanks! Regards, chenwj -- Wei-Ren Chen (陳韋任) Computer Systems Lab, Institute of Information Science, Academia Si...

Hi All, theoretically, I should be able (with proper proxy setting and IP address) to connect and perform literature database searches, such as in the ISI Web of Science, with R. I can imagine this working nicely with the RCurl package. I am pestering the list to ask if I missed a certain package in the Task View or to see if anyone had a similar idea and has already written such code. Cheers, Brian

...f some chemical activity and input variables are chemical descriptors, e.g. molecular weight, number of carbon atoms, etc. I am building regression models and I am confronted with a widely a technique called Y-RANDOMIZATION for which I have difficulties in finding references in general statistical literature regarding regression analysis. I would be grateful if someone could point me to papers/literature in statistical regression analysis which give scientific (statistical) foundation for using Y-RANDOMIZATION. Y-RANDOMIZATION is a widely used technique in QSAR community to unsure the robustness of a...

Hi all, I am trying to fit a logistic regression for a bivariate response using five independent variables in a stepwise procedure. My outputs look okay but does any one know (or is there any literature on) how the confidence intervals are calculated for the reported odds ratios..? Thanks! [[alternative HTML version deleted]]

Hello everyone, Very quick question: How should I cite the use of R in a publication ? Thanks in advance. Sebastien

Hi, in order to understand the Ogg Vorbis decoding algorithm, do you recommend any document/book/www? I have read those on the web page but look for something more detailed.. Thank you very much, Pattara The best things in life are free. - B.G. DeSilva (1927) ---------------------------------------------------------------------- Ott Pattara Kiatisevi T L W G M.Sc. INFOTECH Student,

This is a more general statiscal question, not specific to R: As I move through my masters curriculum in statistics, I am becoming more and more attuned to issues of model fit and diagnostics (graphical methods, AIC, BIC, deviance, etc.) As my regression professor always likes to say, only draw substantive conclusions from valid models. Yet in published articles in my field (medicine), I

...vel-1 the repeated measures and level-2 subjects. I could not get convergence using lme(), so I tried MLwiN, which eventually showed the level-2 variances (random effects for the intercept and slope) were negative values. I know this is known as Heywood cases in the structural equation modeling literature, but the only discussion on this problem in the literature of multilevel models and random effects models I can find is in the book by Prescott and Brown. Any suggestion on how to solve this problem will be highly appreciated. Many thanks. With best regards, Yu-Kang

Dear R list As suggested by Prof Brian Ripley, I have tried to read acf literature. The main problem is I am not the statistician and hence have some problem in understanding the concepts immediately. I came across one literature (http://www.stat.nus.edu.sg/~staxyc/REG32.pdf) on auto-correlation giving the methodology. As per that literature, the auto-correlation is arrived at as...

...read your thesis, and I > (and others) are unlikely to have time to do so. > > Regards, > > John Criswell > > > On 3/16/15 4:23 PM, Xiang Gao wrote: > > Hi, > > Are you guys interested in implementing if-conversion as a GSoC 2015 > project? Last year, I did a literature review about approaches of > if-conversion and the if-conversion in LLVM. This was the undergraduate > thesis of my bachelor degree. It seems that, the if-conversion used in LLVM > is a very simple approach instead of following the literature. So I want to > implement the approaches in...

Dear R-helpers, i have the following situation: i have a bunch of y=b0 + b1*x from different studies, and want to estimate a "general" y=f(x). I only have the b0,b1's and R-squareds. Should i weigh the separate equations by their R-squared? thanks Remko ^'~,_,~'^'~,_,~'^'~,_,~'^'~,_,~'^'~,_,~'^'~,_,~' Remko Duursma, Ph.D. student

...Unknown, > Partial, > Complete > }; > > So, the only non-bikeshed-color argument I have (which is also referenced by Philip, but i couldn't reply to both) suggests we *really* want NoAlias, > MayAlias, and MustAlias, because these are terms of art in the literature (confirmed by DannyB who is a reasonable expert in alias analysis literature). I'm inclined to keep these names as a consequence. The natural extension is PartialAlias. Sad that "alias" is sometimes a noun and sometimes a verb, but if it's in the literature, then I guess that'...

...but the sample size seems to be reasonably high for an asymptotic test. The problem is that the experiment took quite a while, and the 100 responses are grouped into 20 blocks of 5 responses each. The responses within the blocks are clustered, ICC is about 0.13 or so. Can anyone point me to some literature explaining a one-sample binomial test / or chi? test for correlated data? Most of the literature I found starts with more advanced stuff, e.g. 2x2 cross-tabulated data. Best wishes, Matthias

Dear Sir, I am comparing two samples using wilcox.test in R. Literature appears to describe mann whitney u test as the most appropriate test to use on my data. is the wilcox.test function equivalent to mann-whitney u? Is there a way to gain the U-value as apposed to the W-value in R? Thank you

Hi AlL, I ahve this problem that my objective function is discontinous in the paramaters and I need to use methods such as nelder-mead to get around this. My question is: How do i compute standard errors to a problem that does not have a gradient? Any literature on this is greatly appreciated. Jean,

Hi It is preferable to echo your posts to r-help, you usually get more answers and some definitelly superb to mine. It is also better to start a new mail if your question has nothing to do with original subject "Maura E Monville" <maura.monville at gmail.com> napsal dne 01.10.2007 17:44:43: > Unluckily I do not have the privilege of practising with R all day > long. I