Monthly Archives: December 2009

Beancounter minor bug fix release 0.8.9

December 23, 2009
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Another small update to beancounter and just like the previous release due to changes in Perl's Date::Manip. It seems that Date_Calc now really wants a reference to store error codes, so we supply one. I also changed the FX code to use OandA ad there ...

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Beancounter minor bug fix release 0.8.9

December 23, 2009
By

Another small update to beancounter and just like the previous release due to changes in Perl's Date::Manip. It seems that Date_Calc now really wants a reference to store error codes, so we supply one. I also changed the FX code to use OandA ad there a...

Read more »

Beancounter minor bug fix release 0.8.9

December 23, 2009
By

Another small update to beancounter and just like the previous release due to changes in Perl's Date::Manip. It seems that Date_Calc now really wants a reference to store error codes, so we supply one. I also changed the FX code to use OandA ad there ...

Read more »

Compare performance of machine learning classifiers in R

December 23, 2009
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Compare performance of machine learning classifiers in R

This tutorial demonstrates to the R novice how to create five machine learning models for classification and compare the performance graphically with ROC curves in one chart. For a simpler introduction, start with Plot ROC curve and lift chart in R. # ...

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R in India: The Hindu

December 23, 2009
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The Hindu, a leading English-language newspaper in India, published an article on December 21 about doing research with open-source tools and R got a prominent mention: Though commercial statistical packages are popular among researchers, their licensing costs drive people away from them. In this context, R http://www.r-project.org, the open source/free statistical package, which is fast becoming the darling of...

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malapportionment in the U.S. Senate

December 23, 2009
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malapportionment in the U.S. Senate

The 40 Republican senators currently in the U.S. senate represent 36% of the U.S population. See the graph below (click on the thumbnail for PDF). This is something I’ve been meaning to compute for a while now, mapping the cumulative distribution of senators’ ideal points onto the cumulative distribution of state population (each state counts

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The Life Scientists at FriendFeed: 2009 summary

December 23, 2009
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The Life Scientists at FriendFeed: 2009 summary

It’s Christmas Eve tomorrow and so I declare the year over. My Christmas gift to you is a summary of activity in 2009 at the FriendFeed Life Scientists group. It’s crafted using R + Ruby, with raw data and some code snippets available. If you want to see the most popular items from the group

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RInside release 0.2.0

December 22, 2009
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RInside, a set of convenience classes to facilitate embedding of R inside of C++ applications, was updated to release 0.2.0 over the weekend. Sources as well as binary packages are at CRAN; sources are also at my RInside page The biggest news is t...

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RInside release 0.2.0

December 22, 2009
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RInside, a set of convenience classes to facilitate embedding of R inside of C++ applications, was updated to release 0.2.0 over the weekend. Sources as well as binary packages are at CRAN; sources are also at my RInside page The biggest news is that ...

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RInside release 0.2.0

December 22, 2009
By

RInside, a set of convenience classes to facilitate embedding of R inside of C++ applications, was updated to release 0.2.0 over the weekend. Sources as well as binary packages are at CRAN; sources are also at my RInside page The biggest news is t...

Read more »