Monthly Archives: December 2010

R: Using RColorBrewer to colour your figures in R

December 8, 2010
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R: Using RColorBrewer to colour your figures in R

RColorBrewer is an R packages that uses the work from http://colorbrewer2.org/ to help you choose sensible colour schemes for figures in R. For example if you are making a boxplot with eight boxes, what colours would you use, or if you are drawing...

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Google AI Challenge: Scores/Rank by Language

December 8, 2010
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Google AI Challenge: Scores/Rank by Language

A quick follow up to the previous post: about the the scores in the 2010 Google AI competition relative to programming language.  The chart above makes each language visible and discrete - and the scales are the same.library(ggplot2)df<- read.c...

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Google AI Challenge: Scores/Rank by Language

December 8, 2010
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Google AI Challenge: Scores/Rank by Language

A quick follow up to the previous post: about the the scores in the 2010 Google AI competition relative to programming language.  The chart above makes each language visible and discrete - and the scales are the same.library(ggplot2)df<- read.c...

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inline 0.3.8

December 7, 2010
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Romain pushed verion 0.3.8 of inline to CRAN earlier today, and I just updated the Debian package. This version adds an internal performance enhancement which is obtained by making due with fewer reads. The short NEWS file entry follows: 0.3.8 2...

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Big Data Logistic Regression with R and ODBC

December 7, 2010
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Big Data Logistic Regression with R and ODBC

Recently I've been doing a lot of work with predictive models using logistic regression.  Logistic regression is great for determing probable outcomes of a independent binary target variable.  R is a great tool for accomplishing this task.&nb...

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Big Data Logistic Regression with R and ODBC

December 7, 2010
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Big Data Logistic Regression with R and ODBC

Recently I've been doing a lot of work with predictive models using logistic regression.  Logistic regression is great for determing probable outcomes of a independent binary target variable.  R is a great tool for accomplishing this task.&nb...

Read more »

R Workflow

December 7, 2010
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R Workflow

When working with R you end up using a large number of datasets, packages, functions, objects, output files, workspaces, etc.  It can get a bit overwhelming trying to keep everything organized.  That is why a consistent, well-organized workf...

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Bayesian model selection

December 7, 2010
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Bayesian model selection

Last week, I received a box of books from the International Statistical Review, for reviewing them. I thus grabbed the one whose title was most appealing to me, namely Bayesian Model Selection and Statistical Modeling by Tomohiro Ando. I am indeed interested in both the nature of testing hypotheses or more accurately of assessing models,

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Build RQuantLib on 32-bit Windows

December 7, 2010
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Before you start, note that there is now a Windows binary of RQuantLib is available on CRAN.Due to a change in how R-2.12.0 is built, CRAN maintainers could no longer provide a Windows binary of RQuantLib with the QuantLib library they had been using....

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Build RQuantLib on 32-bit Windows

December 7, 2010
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Before you start, note that there is now a Windows binary of RQuantLib is available on CRAN.Due to a change in how R-2.12.0 is built, CRAN maintainers could no longer provide a Windows binary of RQuantLib with the QuantLib library they had been using....

Read more »