Blog Archives

How to reliably access network resources in R

January 21, 2015
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How to reliably access network resources in R

It’s frustrating when an application unexpectedly dies due to a network timeout or unavailability of a network resource. Veterans of …Continue reading →

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Type constraints and NAs in lambda.r

January 15, 2015
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Type constraints and NAs in lambda.r

Someone asked recently how lambda.r deals with NAs in type constraints. Type constraints are optional decorations on a function that …Continue reading →

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Automated parsing of ebola situation reports

January 5, 2015
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Automated parsing of ebola situation reports

I’m pleased to announce public availability of ebola.sitrep, a package I wrote to download and parse ebola situation reports. The …Continue reading →

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Me Meme: An adaptive news digest based on your interests

January 7, 2014
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Me Meme: An adaptive news digest based on your interests

About a month ago, I quietly released a daily news digest service, called Me Meme. This is an email companion …Continue reading →

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How to use vectorization to streamline simulations

January 6, 2014
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How to use vectorization to streamline simulations

While grading some homework it became apparent that many of the idioms of R are not widely known and aren’t …Continue reading »

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Probability and Monte Carlo methods

December 15, 2013
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Probability and  Monte Carlo methods

This is a lecture post for my students in the CUNY MS Data Analytics program. In this series of lectures …Continue reading »

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Matrix factorizations and social network graph analysis

December 9, 2013
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Matrix factorizations and social network graph analysis

This is a lecture post for my students in the CUNY MS Data Analytics program. In this series of lectures …Continue reading »

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Visualizing systems of linear equations and linear transformations

December 2, 2013
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Visualizing systems of linear equations and linear transformations

This is a lecture post for my students in the CUNY MS Data Analytics program. In this series of lectures …Continue reading »

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From area under the curve to the fundamental theorem of calculus

November 24, 2013
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From area under the curve to the fundamental theorem of calculus

This is a lecture post for my students in the CUNY MS Data Analytics program. In this series of lectures …Continue reading »

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Curve sketching for calculus

November 18, 2013
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Curve sketching for calculus

This is a short post for my students in the CUNY MS Data Analytics program on sketching curves in R. …Continue reading »

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