Consider a random pair of binary responses, i.e. with taking values 1 or 2. Assume that probability can be function of some covariates . The Gaussian vector latent structure A standard model is based a latent Gaussian structure, i.e. there exi...
1832 search results for "gis"
ABC model choice by DIC
Yet another paper on ABC model choice was posted on arXiv a few days ago, just prior to the ABC in London meeting that ended in the pub above (most conveniently located next to my B&B!). It is written by Olivier Francois and Guillaume Laval and the approach relies on DIC for running model selection. 
Data Science Toolset discussion at Data Scientist Summit
Heads-up to anyone attending the sold-out Data Science Summit in Las Vegas this week: I'll be there tomorrow and Thursday for the conference and to discuss R on the panel discussion "Data Science Toolset - Recipes That Win" (more details about the panel discussion below.) I'm looking forward to meeting with the other R users there -- tweet or...
Problems with plyr — the memory/complexity trade-off
Two types of R users My overwhelming impression from UseR 2010 is that, generally speaking, there are 2 types of regular R users -- those who have heard and are made uncomfortable by the idea of the *apply() functions, and those who really get it. In ...
Extending mtable() to ivreg, gls and robust standard errors
I have written several extensions of the mtable() command in the memisc library that may come in handy. The methods are available in a package I have written called tonymisc (now, available on CRAN). A zipped folder with my package files is available...
Extending mtable() to ivreg, gls and robust standard errors
I have written several extensions of the mtable() command in the memisc library that may come in handy. The methods are available in a package I have written called tonymisc (now, available on CRAN). A zipped folder with my package files is available...
First-Cut Approach to Synchronizing Field Notes with GPS Data
After a week's worth of work in the field, I typically have several pages of hand-written field notes that are associated with GPS waypoints-- badly in need of some kind of transcription/organization. I have yet to find a simple approach for bringing t...
Registration open for Rmetrics Workshop on Computational Finance
The Rmetrics Association is once again holding its annual Workshop and Summer School on Computational Finance and Financial Engineering at Meielisalp (on Lake Thune in Switzerland) from June 26-30. Now in its fifth year, the workshop consists of Summer School-like tutorial sessions and a user/developer meeting: Both focus on topics from "Computational Finance and Financial Engineering" and on the...
An Intuitive Approach to ROC Curves (with SAS & R)
I developed the following schematic (with annotations) based on supporting documents (link) from the article cited below. The authors used R for their work. The ROC curve in my schematic was output from PROC LOGISTIC in SAS, the scatterplot with m...
What value is cross country GDP correlation? [Part One]
![What value is cross country GDP correlation? [Part One]](http://www.backsidesmack.com/wp-content/uploads/2011/05/now-gc1-1024x489.jpg)
The above graph borders on chartjunk (and is nothing like Paul Butler’s amazing Facebook map). We can see some variation in color but mostly it is a set of lines between 152 country capitals with no means to determine which … Continue reading →
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
