June 2010

MMDS 2010

June 21, 2010 | Joseph Rickert

The 2010 Workshop on Algorithms for Modern Massive Data Sets (MMDS 2010) finished up this past Friday (June 18th) at Stanford. This was an exceptionally well organized conference: four days of mind-stretching talks on algorithm development and the challenges of working with massive data sets approached from almost every conceivable angle. The ... [Read more...]

New blog from Rmetrics Foundation

June 21, 2010 | David Smith

The Rmetrics Foundation (the sharp minds behind the Rmetrics suite of packages for financial analysis in R) have just launched a new blog where you can keep up with the latest Rmetrics news. Amongst the recent news: a ne eBook about data management of Indian financial market data, and a ... [Read more...]

A quetion

June 21, 2010 | Shige

I posted a question to the R-Mixed-Model mailing list but have not had any responses yet:--------------------------------------------------------------------------------------- Dear All,I wonder if anybody has tried to make glmmBUGS work with JAGS. Mya...
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The police records for 2009 are out.

June 20, 2010 | Diego Valle-Jones

The 2009 homicide numbers collected by the SNSP (National System of Public Security) are finally out, you can download the data from the ICESI, which is a civic institution not affiliated with the government. If you remember, one of the conclusio... [Read more...]

QSPR modeling with signatures

June 20, 2010 | Egon Willighagen

I had to dig deep to find posts on QSAR modeling. There are quite a few on QSAR in Bioclipse, but that focuses on the descriptor calculation. In a quick scan, I could only spot two modeling posts:The CDK/Metabolomics/Chemometrics Unconference resultsWh... [Read more...]

Estimating Probability of Drawdown

June 19, 2010 | Joshua Ulrich

I've shown several examples of how to use LSPM's probDrawdown function as a constraint when optimizing a leverage space portfolio.  Those posts implicitly assume the probDrawdown function produces an accurate estimate of actual drawdo... [Read more...]

More powerful iconv in R

June 19, 2010 | Matt Shotwell

The R function iconv converts between character string encodings, for example, from the locale dependent encoding to UTF-8: __ iconv("foo", to="UTF-8") [1] "foo" However, R has long-running trouble with embedded null characters ('') in strings. Hence, if we try to convert to an encoding that permits embedded null characters, iconv ... [Read more...]

What I need to know…

June 19, 2010 | Manos Parzakonis

is maps and geographical data representation in R. In case you’re curious too this is a good study material from R-Bloggers : maps ; geographical ; spatial Ok. This could be a tweet rather than a post… [Read more...]

ggplot2 GUI progress

June 19, 2010 | Tal Galili

(Written by Ian Fellows) Below is a link to the first of a weekly (or bi-weekly) screen-cast vlog of my progress building a GUI for the ggplot2 package. http://neolab.stat.ucla.edu/cranstats/gsoc_vlog1.mov comments and suggestions are more than welcome, and can e-mailed to me at: ... [Read more...]

The perfect fake

June 19, 2010 | Matt Asher

Usually when you are doing Monte Carlo testing, you want fake data that’s good, but not too good. You may want a sample taken from the Uniform distribution, but you don’t want your values to be uniformly distributed. In other words, if you were to order your sample ... [Read more...]

Why R doesn’t suck

June 19, 2010 | Paul Butler

I first encountered the R programming language a few years ago when I needed to make some plots. Although I’ve used it occasionally since, I always considered it a sort of “Perl for statisticians” — a useful swiss-army knife with … Continue reading → [Read more...]

Those dice aren’t loaded, they’re just strange

June 18, 2010 | Matt Asher

I must confess to feeling an almost obsessive fascination with intransitive games, dice, and other artifacts. The most famous intransitive game is rock, scissors, paper. Rock beats scissors.  Scissors beats paper. Paper beats rock. Everyone older than 7 seems to know this, but very few people are aware that dice can ... [Read more...]

Revolution Analytics: Startup to watch

June 18, 2010 | David Smith

Jack Germain of LinuxInsider interviewed Revolution CEO Norman Nie for his "Startup to Watch" column. Amongst the topics covered: the R language (Norman: "There are no statistical expressions that can not be written in R"), Revolution's recent name-change and announcement of our development roadmap, and the challenges of competing with ... [Read more...]

The impact of the drug war in Mexico

June 18, 2010 | David Smith

For the last couple of years, Mexico has been in the midst of an escalating drug war, with violent crime on the upswing in many areas. But tracking the impact quantitatively is difficult: in Mexico, about 85% of crimes go unreported, and corruption leads to inaccurate reporting in some districts. Diego ... [Read more...]

R Commander – linear regression

June 18, 2010 | Ralph

We can fit various linear regression models using the R Commander GUI which also provides various ways to consider the model diagnostics to determine whether we need to consider a different model. Fast Tube by Casper The “Statistics” menu provides access to various statistical models via the “Fit models” sub-menu ... [Read more...]

Occupational Wage Comparison Plotted in R

June 17, 2010 | C

Ever have conversations with your kids about what they are going to do with their life? Still trying to figure out what you are going to do with yours?Best to not starve...The chart above represents the percentage of each occupation that earn a given h...
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