Monthly Archives: February 2013

Rcpp class in Sat 9 Mar in NYC

February 24, 2013
By

Join Dirk Eddelbuettel for six hours of detailed and hands-on instructions and discussions around Rcpp, RInside, RcppArmadillo, RcppGSL and other packages . . . Rcpp has become the most widely-used language extension for R. Currently deployed by 103 CRAN packages and a further 10 BioConductor packages, it permits users and developers to pass “whole R The post Rcpp...

Read more »

Ten Things the Emacs Social Science Starter Kit gives you

February 24, 2013
By

I recently made some updates to the Emacs Social Science Starter Kit. I maintain the SSSK for my own convenience, but other people have found it useful as well. By now there are a lot of little bits and pieces in the kit, so I thought it might be usefu...

Read more »

the BUGS Book [guest post]

February 24, 2013
By
the BUGS Book [guest post]

(My colleague Jean-Louis Fouley, now at I3M, Montpellier, kindly agreed to write a review on the BUGS book for CHANCE. Here is the review, en avant-première! Watch out, it is fairly long and exhaustive! References will be available in the published version. The additions of book covers with BUGS in the title and of the corresponding

Read more »

Dynamic community occupancy modeling with R and JAGS

February 24, 2013
By
Dynamic community occupancy modeling with R and JAGS

This post is intended to provide a simple example of how to construct and make inferences on a multi-species multi-year occupancy model using R, JAGS, and the ‘rjags’ package. This is not intended to be a standalone tutorial on dynamic community occupancy modeling. Useful primary literature references include MacKenzie et al. (2002), Kery and Royle (2007), Royle and Kery...

Read more »

Workflow w/ reports package

February 24, 2013
By
Workflow w/ reports package

NOTE: THIS IS NOW A PACKAGE SEE THIS LINK FOR DETAILS Let me start with a video for people who just want to see what I’m demo-ing first: I’ve been interested in speeding up workflow lately and spending a lot … Continue reading →

Read more »

Simple Count Probability

February 24, 2013
By
Simple Count Probability

Data can take the form of counts: Compliments or complaints received Items returned Number of E. coli cases Data can also be expressed in rates: Percent of web traffic from a user permissions type Percent of businesses in a region passing a safety audit A random variable X has the Poisson distribution with parameter lambda

Read more »

Major update to the R-package geomorph

February 24, 2013
By

Hi Folks,We have just completed a major update to the R-package geomorph:software for geometric morphometric analyses in R.  Included are several new functions to  carry out additional GM analyses, as well as enhancements of existing function...

Read more »

Copying Data from Excel to R and Back

February 24, 2013
By
Copying Data from Excel to R and Back

A lot of times we are given a data set in Excel format and we want to run a quick analysis using R's functionality to look at advanced statistics or make better visualizations. There are packages for importing/exporting data from/to Excel, but I have f...

Read more »

Large correlation in parallel

February 24, 2013
By
Large correlation in parallel

A little improvement to the bigcor function proposed on Rmazing to compute huge correlation matrix in R, I made the function work in parallel using all the CPU cores available on the machine. The code is here.Here is a benchmark of the 2 func...

Read more »

The Wisdom of Crowds – Clustering Using Evidence Accumulation Clustering (EAC)

February 24, 2013
By
The Wisdom of Crowds – Clustering Using Evidence Accumulation Clustering (EAC)

Today’s blog post is about a problem known by most of the people using cluster algorithms on datasets without given true labels (unsupervised learning). The challenge here is the “freedom of choice” over a broad range of different cluster algorithms and how to determine the right parameter values. The difficulty is the following: Every clustering algorithm and even...

Read more »