I have just submitted a revised version of survHE on CRAN — it should be up very shortly. This will be version 1.0.64 and its main feature is a major restructuring in the way the rstan/HMC stuff works. Basically, this is due to a change in the default C++ compiler. I ... [Read more...]

A front-page story in the Baltimore Sun reported last week on the state of the bridges in Maryland. Among the report's findings: 5.4% of bridges are classified in "poor" or "structurally deficient" condition 13% of bridges in the city of Baltimore are in "poor" condition Those findings were the result of analysis ... [Read more...]

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Game of Chefs is an Israeli reality cooking competition show, where chefs compete for the title of “Israel’s most talented chef”. The show has four stages: blind auditions, training camp, kitchen battles, and finals. Here I will examine the 4th season’s (Game of Chefs: Confectioner) inter-rater reliability in ... [Read more...]

The Format In the blind auditions, candidates have 90 minutes to prepare a dessert, confection or other baked good, which is then sent to the show’s four judges for a blind taste test. The judges don’t see the candidate, and know nothing about him or her, until after they ... [Read more...]

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In this post, I will show you how a very basic R code can be used to estimate quality control constants needed to construct X-Individuals, X-Bar, and R-Bar charts. The value of this approach is that it gives you a mechanical sense of where these constants come from and some ... [Read more...]

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During my stay in London for the m3 conference, I also gave a talk at the R-Ladies London Meetup on Tuesday, October 16th, about one of my favorite topics: Interpretable Deep Learning with R, Keras and LIME. Keras is a high-level open-source deep lear... [Read more...]

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It’s been pretty quiet over here for a long time. But I have been busy beavering away at many interesting projects at NIWA, including a project where we developed a new method for identifying when your regression model is starting … Continue reading → [Read more...]

I came across this post which gives a method to estimate Pi by using a circle, it’s circumscribed square and (lots of) random points within said square. Booth used Stata to estimate Pi, but here’s some R code to do the same thing… x [Read more...]

In August of 2003 Thomas Lumley added bquote() to R 1.8.1. This gave R and R users an explicit Lisp-style quasiquotation capability. bquote() and quasiquotation are actually quite powerful. Professor Thomas Lumley should get, and should continue to receive, a lot of credit and thanks for introducing the concept into R. In ... [Read more...]

I recently came up with the idea for a series of screencasts: I've thought about recording a screencast of an example data analysis in #rstats. I'd do it on a dataset I'm unfamiliar with so that I can show and narrate my live thought process.Any suggestions for interesting datasets ... [Read more...]

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In R, the logical || (OR) and && (AND) operators are unique in that they are designed only to work with scalar arguments. Typically used in statements like while(iter __ 1000 && eps __ 0.0001) continue_optimization() the assumption is that the objects on either side (in the example above, iter and eps) are single values (... [Read more...]

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