We recently had to decomission inside-r.org, the R resources site created by Revolution Analytics in 2010. Links to inside-r.org now redirect to MRAN, which now contains much of the material which was there, including an R package directory, examples of R applications, and a guide for getting started with ... [Read more...]

Introduction A few months back the first, pre-CRAN versions of my nzelect package included some data from the New Zealand Census 2013. As noted in my last post, I’ve now split this into a separate nzcensus package, for ease of development and maint... [Read more...]

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In case you missed my free webinar on “Model-Based Machine Learning“,  here is the recording. Apologies for the poor quality of the video. Domino Data Lab’s webinar platform suffered a service degradation while recording the event. The webinar slides may be found below. If you have any questions, please ... [Read more...]

I just wanted to share the good experience I have had with creating a virtual personal desktop on Paperspace. A few months ago I started researching whether there was anyone out there providing this service. Paperspace came up in the … Continue reading → [Read more...]

It just got a lot easier to simulate the performance of simple heuristics. The post Heuristica: An R package for testing models of binary choice appeared first on Decision Science News. [Read more...]

A new release, now at version number 0.6.10, of the digest package is now on CRAN. I also just prepared the Debian upload. This release, just like the previous one, is once again the work mostly of external contributors. Michel Lang added length chec... [Read more...]

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As we know, a customer usually goes through a path/sequence of different channels/touchpoints before a purchase in e-commerce or conversion in other areas. In Google Analytics we can find some touchpoints more likely to assist to conversion than others that more likely to be last-click touchpoint. As most ... [Read more...]

New Course Announcement: Introduction to Portfolio Analysis in R One golden rule in investing is to always test your portfolio strategy on historical data. Then, you should constantly monitor the strategy's performance after you begin trading. In thi... [Read more...]

This is the second part of the exercises dedicated to analysis of stock prices. In this part we will provide exercises for plotting, fitting linear model and predicting stock prices. You dont need to be an expert stock’s trader in order to understand the examples, but you should go ... [Read more...]

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by Bob Horton, Microsoft Data Scientist ROC curves are commonly used to characterize the sensitivity/specificity tradeoffs for a binary classifier. Most machine learning classifiers produce real-valued scores that correspond with the strength of the prediction that a given case is positive. Turning these real-valued scores into yes or no ... [Read more...]

A couple of my collaborators have had trouble using read_html() from the readr package to access this Wikipedia page. Specifically they have been getting errors like this: Since I couldn’t reproduce these errors on my machine it appeared to be something relating to their particular machine setup. Looking ... [Read more...]

Here are two papers that may be useful for researchers in psychology, linguistics, and cognitive science:Shravan Vasishth and Bruno Nicenboim. Statistical methods for linguistic research: Foundational Ideas - Part I. Language and Linguistics Compass, 2016. In Press. PDF: http://bit.ly/VasNicPart1Code: http://bit.ly/VasNicPart1CodeBruno Nicenboim and ... [Read more...]

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