2043 search results for "regression"

Social Media Mining and Bioinformatics (with R)

August 5, 2014
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Social Media Mining and Bioinformatics (with R)

In June and July, I receive copies of two books, Social Media Mining with R, by Nathan Danneman and Richard Heimann Bioinformatics with R Cookbook, by Paurush Praveen Sinha For the first one, two recent interesting books deal with the same topic. Reza Zafarani, Mohammad Ali Abbasi and Huan Liu published last year Social Media Mining: An Introduction. Actually, the book can...

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Guns are Cool – Differences between states

August 3, 2014
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Guns are Cool – Differences between states

Last week my blog showed that there are differences between states in the shootingtracker database. This week it is attempted to understand why states are different. A number of variables were extracted from a few sources, among which gun laws, % ...

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ideal point graphics, via d3

July 30, 2014
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ideal point graphics, via d3

I’ve updated some of the graphical displays of the ideal point estimates I serve up here. I’ve rendered some of these in d3, with some rollover lah-de-dah: (1) 113th House ideal points in a long “caterpillar” format; (2) scatterplot of ideal point against Obama 2012 vote in district. Screenshot of the scatterplot appears below. My

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Measuring Fat Loss without the scale

July 30, 2014
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Measuring Fat Loss without the scale

@tdhopper posted his self-measurements of weight loss a few months back. I recently decided also that I wanted to lose fat-weight—the infamous “I could stand to be a few kilos lighter”—and I think I came up with a more productive way of thinking about my progress: I’m not going to look at the scale at all....

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Fast-track publishing using the new R markdown – a tutorial and a quick look behind the scenes

July 29, 2014
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Fast-track publishing using the new R markdown – a tutorial and a quick look behind the scenes

The new R Markdown (rmarkdown-package) introduced in Rstudio 0.98.978 provides some neat features by combining the awesome knitr-package and the pandoc-system. The system allows for some neat simplifications of the fast-track-publishing (ftp) idea using so called formats. I've created a new package, the Grmd-package, with an extension to the html_document format, called the docx_document. The formatter allows an almost...

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Scraping information of CRAN packages

July 28, 2014
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(This article is adapted to the latest version of rvest package.) In my previous post, I demonstrated how we can scrape online data using existing packages. In this post, I will take it a bit further: I will scrape more information of CRAN packages since each of them also has a web page like this. More specifically,...

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Comment on Sustainability and innovation in staple crop production in the US Midwest

July 28, 2014
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Comment on Sustainability and innovation in staple crop production in the US Midwest

After writing a blog post about the paper “Sustainability and innovation in staple crop production in the US Midwest” I decided to submit a formal comment to the International Journal of Agricultural Sustainability in July 2013, which was published today. As far as I know, Heinemann et al. provided a rebuttal to my comments, which

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Cigarette and life expectancy

July 28, 2014
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Cigarette and life expectancy

Yesterday evening, I uploaded a graph, with the labor productivity as a function of coffee consumption. Of course, it was for fun ! With this kind of regression, base on aggregated data, we can say almost anything, since most of them are correlated because of some (hidden) common factor, such as the wealth of the country. For instance, with...

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Things to try after useR! – Part 1: Deep Learning with H2O

July 25, 2014
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Things to try after useR! – Part 1: Deep Learning with H2O

Annual R User Conference 2014The useR! 2014 conference was a mind-blowing experience. Hundreds of R enthusiasts and the beautiful UCLA campus, I am really glad that I had the chance to attend! The only problem is that, after a few days of non-stop R talks, I was (and still am) completely overwhelmed...

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What are the most popular keywords of CRAN packages?

July 24, 2014
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(This article is adapted to the latest version of rvest package.) A large proportion of R's power should be attributed to the enormous amount of extension packages. Many packages are published to CRAN. These packages cover a wide range of fields. In this post, I'll show you how to use R to scrap the titles of all CRAN packages from...

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