I try to compile the source code of R 2.12 on CentOS, but it throw an error when trying to install *cluster*. * installing *source* package ‘cluster’ ... Read More: 3800 Words Totally

I try to compile the source code of R 2.12 on CentOS, but it throw an error when trying to install *cluster*. * installing *source* package ‘cluster’ ... Read More: 3800 Words Totally

A couple of weeks ago, Bradford Cross of FlightCaster posted in Measuring Measures that transactions are the next big data category. I argue that they already are, and from reading his blog post, he seems to suggest this as well but I will admit that I think I missed his point. There are some clear examples of transactions and...

Last weekend, my friend and coauthor Jean-Michel Marin was interviewed (as Jean-Claude Marin, sic!) by a national radio about the probability of the replication of a draw on the Israeli Lottery. Twice the same series of numbers appeared within a month. This lotery operates on a principle of 6/37 + 1/8: 6 numbers are drawn

The United Nations has declared today “World Statistics Day”. I’ve no idea what that means, or why we need a WSD. Perhaps it is because the date is 20.10.2010 (except in North America where it is 10.20.2010). But then, what happens from 2013 to 2099? And do we just forget the whole idea after 3112?

Last night, Drew Conway showed me a fascinating graph that he made from the R package data we’ve recently collected from CRAN. That graph will be posted and described in the near future, because it has some really interesting implications for the structure of the R package world. But for the moment I want to

We have just posted the (mostly definitive) program for Adap’skii, January 3-4, The Canyons, Utah. This is taking place just before and as a satellite of the larger MCMSki III conference, January 4-7, same location. The registration for the conference and for lodging is available through the MCMCSki III registration page, Remember also that this

With the data from the 2010 US Census to be published early next year, here's a cautionary tale from the 2000 Census. If you take a look at the ratio of numbers of men to women in the 5-Percent "PUMS" sample from the 2000 census over various ages, you'll see an odd spike near age 65: What causes this...

Very similar to what has been done to create a function to perform fast multiplication of large matrices using the Strassen algorithm (see previous post), now we write the functions to quickly calculate the inverse of a matrix.To avoid rewriting pages and pages of comments and formulas, as I did for matrix multiplication, this time I'll...

In his august draft of Hansen2010, Dr. Hansen makes the following claim: “We present evidence here that the urban warming has little effect on our standard global temperature analysis. However, in the Appendix we carry out an even more rigorous test. We show there that there are a sufficient number of stations located in “pitch

hyperGTest compute Hypergeomtric p-values for over or under-representation of each GO term in the specified category among the specified gene set. *geneSample* was used as an example. Read More: 1329 Words Totally

hyperGTest compute Hypergeomtric p-values for over or under-representation of each GO term in the specified category among the specified gene set. *geneSample* was used as an example. Read More: 1329 Words Totally

The next Sunbelt Social Networks Conference (XXXI) will take place in February 2011 in St Pete Beach, Florida, USA. The preliminary program is available here. There is still time to submit abstracts (deadline is on October 29, 2010). At the conference I will be teaching the workshop “Introduction to Social Network Analysis with R”. It

World Statistics Day is 2010 October 20. If you work with data (or you should), then you are a statistician and this is a day for you. Try the Monte Hall problem on your mother. Start reading Bad Science. I mean the book, but here’s the blog. Take a step towards breaking your spreadsheet addiction … Continue reading...

NppToR 2.5.0 supports R-2.12.0, improves saved settings and install, also retires the syntax generator.

U.S. Congressional districts are today drawn with the aim of maximizing the electoral advantage of the state’s majority party, subject to some constraints, including compactness (which can be measured in numerous ways) and a “one person, one vote” standard. What if, instead of minimizing population variance across districts, we aimed to minimize the mean distance between … Continue reading →

A fresh minor release of RProtoBuf, now at version 0.2.1, has appeared earlier today on CRAN. RProtoBuf provides GNU R bindings for the Google Protobuf data encoding library used and released by Google. This releases extends the recent 0.2.0 re...

The winners of this year's ggplot2 case study competition have been announced. I was honoured to be asked to be a judge of the competition this year, but it was a difficult job with so many excellent entries. In the end, the judging panel (which included Heike Hoffman and Hadley Wickham and me) selected three entries which each demonstrated...

The latest Offensive Politics Housedata file has been released. This file covers 51,463 individual electronic FEC filings for US House committees from 2001 to 10/18/2010.

Ladies and gentlemen, waiting is finally over. I'm proud to introduce Rumpel!