2008 search results for "MAP"

Great-circle distance calculations in R

November 23, 2010
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Great-circle distance calculations in R

Recently I found myself needing to calculate the distance between a large number of longitude and latitude locations. As it turns out, because the earth is a three-dimensional object, you cannot simply pretend that you are in Flatland, albeit some … Continue reading →

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Learn Logistic Regression (and beyond)

November 23, 2010
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Learn Logistic Regression (and beyond)

One of the current best tools in the machine learning toolbox is the 1930s statistical technique called logistic regression. We explain how to add professional quality logistic regression to your analytic repertoire and describe a bit beyond that. A statistical analyst working on data tends to deliberately start simple move cautiously to more complicated methods.Related posts:

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Is there a Market for Premium R Packages?

November 19, 2010
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Is there a Market for Premium R Packages?

Nathan Yau, of the excellent FlowingData blog, recently asked on his Twitter stream: I wonder if there’s a market for premium R packages, like there is for say, @wordpress themes and plugins There are some great packages available for R, all of which are currently free. I think it would be great if authors like

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dcemriS4 0.40

November 18, 2010
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dcemriS4 0.40

The R package dcemriS4 is a collection of functions, with examples and documentation, that allows one to perform voxel-wise quantitative analysis of dynamic contrast-enhanced MRI (DCE-MRI) or diffusion-weighted imaging (DWI) data.  The primary...

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dcemriS4 0.40

November 18, 2010
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dcemriS4 0.40

The R package dcemriS4 is a collection of functions, with examples and documentation, that allows one to perform voxel-wise quantitative analysis of dynamic contrast-enhanced MRI (DCE-MRI) or diffusion-weighted imaging (DWI) data.  The primary...

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Wanted: R hackers for Revolution

November 17, 2010
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Revolution Analytics is growing, and we're looking for some skilled R Hackers to work in our pre-Sales team. A big part of our task is showing companies how R is such a great tool for modern data analysis (especially compared to those older tools with 3- or 4-letter acronyms). So if you have a knack for applying R to...

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Data Science meets Humanities

November 16, 2010
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There's an interesting article in the NYT today about the emerging discipline of "digital humanities": extracting digital data from historical archives to answer questions from the Arts and Humanities. From the article: Members of a new generation of digitally savvy humanists argue it is time to stop looking for inspiration in the next political or philosophical “ism” and start...

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In case you missed it: October Roundup

November 16, 2010
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In case you missed them, here are some articles from October of particular interest to R users. Reviews of the winners and finalists of the 2010 ggplot2 case study competition. We have published a new article "R is Hot", with interviews from a dozen R users in industry and academia. A new code highlighting tool for displaying R code...

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Isarithmic History of the Two-Party Vote

November 15, 2010
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Isarithmic History of the Two-Party Vote

A few weeks ago, I shared a series of choropleth maps of U.S. presidential election returns, illustrating the relative support for Democratic, Republican, and third Party candidates since 1920. The granularity of these county level results led me to wonder whether it would be possible to develop an isarithmic map of presidential voting using the … Read more

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My Day at ACM Data Mining Camp III

November 13, 2010
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My Day at ACM Data Mining Camp III

My first time at ACM Data Mining Camp was so awesome, that I was thrilled the make the trip up to San Jose for the November 2010 version. In July, I gave a talk at the Emerging Technologies for Online Learning Symposium conference with a faculty member in the Department of Statistics, at the Fairmont. The place was amazing,...

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