function myFunction() { var frames = document.getElementsByTagName("iframe"); for (i = 0; i iframe { width:100%; } Back in February I attended the 19th NHS Hack Day in Cardiff. I had a great experience listening to the pitches, meeting new people inv... [Read more...]

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The general struggle Something that will make life easier in the long-run can be the most difficult thing to do today. For coders, prioritising the long term may involve an overhaul of current practice and the learning of a new skill. This can be painful for a number of reasons: ... [Read more...]

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Here's the slides from a talk I gave recently at Stockholm University: "Power Analysis for Longitudinal 2- and 3-Level Models: Challenges and Some Solutions Using the R Package powerlmm". The slides gives several code examples for a lot of powerlmm's f... [Read more...]

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In the exercises below, we will continue working with lubridate and examine more features of the library. Answers to these exercises are available here. Please check the previous exercise here. If you obtained a different (correct) answer than those listed on the solutions page, please feel free to post your ... [Read more...]

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Prediction competitions are now so widespread that it is often forgotten how controversial they were when first held, and how influential they have been over the years. To keep this exercise manageable, I will restrict attention to time series forecasting competitions — where only the history of the data is available ... [Read more...]

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On April 4th, 2018 I gave a talk about Deep Learning with Keras at the Ruhr.Py Meetup in Essen, Germany. The talk was not specific to Python, though - so if you’re intersted: the slides can be found here: https://www.slideshare.net/ShirinGlander/ruhrpy-introducing-deep-learning-with-keras-and-python Ruhr.PY - Introducing ... [Read more...]

I am so lucky to work with so many generous, knowledgeable, and amazing people at Stack Overflow, including Ian Allen and Kirti Thorat. Both Ian and Kirti are part of biweekly sessions we have at Stack Overflow where several software developers join me in practicing R, data science, and modeling ... [Read more...]

In our last entry we analysed the relative frequency of paranormal manifestations in the British Isles according to the Paranormal Database. The results of that analysis showed that hauntings of various forms are by far the most commonly-reported paranormal encounter in the British Isles, followed by cryptozoological sightings. This is,... [Read more...]

Tal Galili's R-bloggers.com has been syndicating blog posts about R for quite a while — from memory I'd say about 8 years, but I couldn't find the exact date it started aggregating. Anyway, it contains a wealth of information about activity in the R ecosystem, but without any easy way to ... [Read more...]

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R tip. Use wrapr::match_order() to align data. Suppose we have data in two data frames, and both of these data frames have common row-identifying columns called “idx“. library("wrapr") d1 [Read more...]