R

Blogs on the R software.

3D density plot in R with Plotly

June 30, 2016
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3D density plot in R with Plotly

In Bayesian nonparametrics, many models address the problem of density regression, including covariate dependent processes. These were settled by the pioneering works by [current ISBA president] MacEachern (1999) who introduced the general class of dependent Dirichlet processes. The literature on dependent processes was developed in numerous models, such as nonparametric regression, time series data, meta-analysis, to cite but […]

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another wrong entry

June 26, 2016
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another wrong entry

Quite a coincidence! I just came across another bug in Lynch’s (2007) book, Introduction to Applied Bayesian Statistics and Estimation for Social Scientists. Already discussed here and on X validated. While working with one participant to the post-ISBA softshop, we were looking for efficient approaches to simulating correlation matrices and came [by Google] across the […]

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What is reproducible research?

June 23, 2016
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What is reproducible research?

I was asked about my understanding of reproducible research, and how that applies to social research. Here is how I see: Reproducible research is key to any scientific method, including applied social sciences. My minimalist understanding of reproduci...

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Introducing the p-hacker app: Train your expert p-hacking skills

June 21, 2016
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[This is a guest post by Ned Bicare, PhD]   Start the p-hacker app! My dear fellow scientists! “If you torture the data long enough, it will confess.” This aphorism, attributed to Ronald Coase, sometimes has been used in a disrespective manner, ...

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R packaging industry close-up: How fast are we growing?

June 18, 2016
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R packaging industry close-up: How fast are we growing?

I worked a bit over the weekend preparing my talk to be delivered at the seminar organized by IBPAD this week at University of Brasilia, addressing the interfaces of Big Data and Society. I was invited to present the R package SciencesPo for an eclecti...

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Le Monde puzzle [#965]

June 13, 2016
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Le Monde puzzle [#965]

A game-related Le Monde mathematical puzzle: Starting with a pile of 10⁴ tokens, Bob plays the following game: at each round, he picks one of the existing piles with at least 3 tokens, takes away one of the tokens in this pile, and separates the remaining ones into two non-empty piles of arbitrary size. Bob […]

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data challenge in Sardinia

June 9, 2016
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data challenge in Sardinia

In what I hope is the first occurrence of a new part of ISBA conferences, Booking.com is launching a data challenge at ISBA 2016 next week. The prize being a trip to take part in their monthly hackathon. In Amsterdam. It would be terrific if our Bayesian conferences, including BayesComp, could gather enough data and […]

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R Passes SAS in Scholarly Use (finally)

June 8, 2016
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R Passes SAS in Scholarly Use (finally)

Way back in 2012 I published a forecast that showed that the use of R for scholarly publications would likely pass the use of SAS in 2015. But I didn’t believe the forecast since I expected the sharp decline in SAS … Continue reading →

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the new version of abcrf

June 6, 2016
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the new version of abcrf

A new version of the R package abcrf has been posted on Friday by Jean-Michel Marin, in conjunction with the recent arXival of our paper on point estimation via ABC and random forests. The new R functions come to supplement the existing ones towards implementing ABC point estimation: covRegAbcrf, which predicts the posterior covariance between […]

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Rexer Data Science Survey: Satisfaction Results

June 6, 2016
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Rexer Data Science Survey: Satisfaction Results

by Bob Muenchen I previously reported on the initial results of Rexer Analytics’ 2015 survey of data science tools here. More results are now available, and the comprehensive report should be released soon.  One of the more interesting questions on the survey … Continue reading →

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