2608 search results for "gis"

Recession forecasting II: Assessing Hussman’s Accuracy

August 22, 2011
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Recession forecasting II: Assessing Hussman’s Accuracy

In my last post on recessions, I implemented John Hussman's Recession Warning Composite in R. In this post I will examine how well this index performs and discuss how we might improve it. If you would like to follow along at home, be sure to run the ...

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A view of useR!2011

August 22, 2011
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A view of useR!2011

Start Brian Ripley The conference was opened with a talk by Brian Ripley.  I’ll distort his talk into 3 points that came across to me. 1. R Core is finite The time available from R Core members is a strictly limited good.  The more that is pushed onto R Core, the less attention to details.  … Continue reading...

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useR! Conference 2011 highlights

August 20, 2011
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useR! Conference 2011 highlights

I was at the useR! Conference at The University of Warwick in Coventry, UK, last week. My goal in going was to learn the latest things regarding (simple) dynamic graphics, (simple) web-based apps, parallel computing, and memory management (dealing with big data sets). I got just what I was hoping for and more. There are

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Relation Between Fires and Distanse to the Nearest Highway

August 19, 2011
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Relation Between Fires and Distanse to the Nearest Highway

Instead of introduction Just for fun I decided to investigate relationship between fires intensity in Leningrad region (and St. Petersburg as well) and distance to the nearest road in order to gain the evidence of the major influence of the anthropogen...

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Friday quote: the handmaiden and the whore

August 19, 2011
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Friday quote: the handmaiden and the whore

Because it is Friday and because we collect quotes: If mathematics is the handmaiden of science, statistics is the whore: all that scientists are looking for is a quick fix without the encumbrance of a meaningful relationship. Statisticians are second-class mathematicians, third-rate scientists and fourth-rate thinkers. They are the hyenas, jackals and vultures of the scientific ecology: picking...

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Friday quote: the handmaiden and the whore

August 19, 2011
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Friday quote: the handmaiden and the whore

Because it is Friday and because we collect quotes: If mathematics is the handmaiden of science, statistics is the whore: all that scientists are looking for is a quick fix without the encumbrance of a meaningful relationship. Statisticians are second-class mathematicians, third-rate scientists and fourth-rate thinkers. They are the hyenas, jackals and vultures of the scientific...

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useR2011 highlights

August 18, 2011
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useR2011 highlights

useR has been exhilarating and exhausting. Now it’s finished, I wanted to share my highlights. 10. My inner twelve year old schoolgirl swooning and fainting with excitement every time I chatted with a member of R-core. 9. Patrick Burns declaring that his company consists of himself and his two cats. And that one of the

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Get Used To It

August 18, 2011
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Get Used To It

This is a brain teaser. You've been warned.The S&P 500 is in a bear market (defined as the 50-day MA being below the 200-day MA) 30.8% of the time. Also, the S&P 500 has experienced single-day 4% declines 0.242% of the time. Of the times we exp...

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The R-Files: Martyn Plummer

August 17, 2011
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The R-Files: Martyn Plummer

"The R-Files" is an occasional series from Revolution Analytics, where we profile prominent members of the R Community. Name: Martyn Plummer Occupation: Statistician at International Agency for Research on Cancer Nationality: British Years Using R: 16 Known for: Member of R core group; member of R Journal editorial board Martyn Plummer is a longtime contributor to the R community...

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Lee E. Edlefsen – Scalable Data Analysis in R (useR! 2011)

August 17, 2011
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Lee E. Edlefsen – Scalable Data Analysis in R (useR! 2011)

The RevoScaleR package isn’t open source, but it is free for academic users. Collect and storing data has outpaced our ability to analyze it. Can R cope with this challenge? The RevoScaleR package is part of the revolution R Enterprise. This package provides data management and data analysis. Uses multiple cores and should scale. Scalability

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