April 2018

HH Data Science Meetup slides: Explaining complex machine learning models with LIME

April 17, 2018 | Dr. Shirin Glander

On April 12th, 2018 I gave a talk about Explaining complex machine learning models with LIME at the Hamburg Data Science Meetup - so if you’re intersted: the slides can be found here: https://www.slideshare.net/ShirinGlander/hh-data-science-meetup-explaining-complex-machine-learning-models-with-lime-94218890 Traditional machine learning workflows focus heavily on model training and optimization; ... [Read more...]

Le Monde puzzle [#1049]

April 17, 2018 | xi'an

An algorithmic Le Monde mathematical puzzle with a direct Alice and Bob play a game by picking alternatively one of the remaining digits between 1 and 10 and putting it in either one of two available stacks, 1 or 2. Their respective gains are the products of the piles (1 for Alice and 2 for […]
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Pencil Scribbles

April 17, 2018 | @aschinchon

Con las bombas que tiran los fanfarrones, se hacen las gaditanas tirabuzones (Palma y corona, Carmen Linares) This time I draw Franky again using an algorithm to solve the Travelling Salesman Problem as I did in my last post. On this occasion, instead of doing just one single line drawing, ...
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O is for Overview Reports

April 17, 2018 |

O is for overview Reports with dataMaidOne of the best things you can do is to create a study codebook to accompany your dataset. In it, you should include information about the study variables and how they were created/computed. It's also nice to have a summary of your dataset, ... [Read more...]

R Tip: Use Slices

April 16, 2018 | John Mount

R tip: use slices. R has a very powerful array slicing ability that allows for some very slick data processing. Suppose we have a data.frame “d“, and for every row where d$n_observations __ 5 we wish to “NA-out” some other columns (mark them as not yet reliably available). Using ...
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Reticulated Shiny

April 16, 2018 | R Views

RStudio recently announced the reticulate package, which is designed to help R users inter-operate with Python code. I was immediately excited by this announcement. In a past life, I worked with a team at the National Renewable Energy Lab (NREL) on vehicle simulations. Their models could predict MPG for vehicles ...
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The 2018 author and reviewer survey

April 16, 2018 | rOpenSci - open tools for open science

rOpenSci’s package review system (aka onboarding) is one of our key activities to improve quality and sustainability of scientific R packages. The editorial team are constantly working towards improving the experience for both authors and reviewers. After our first year, we surveyed authors and reviewers who participated in our ...
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loo 2.0 is loose

April 16, 2018 | Jonah Gabry

This post is by Jonah and Aki. We’re happy to announce the release of v2.0.0 of the loo R package for efficient approximate leave-one-out cross-validation (and more). For anyone unfamiliar with the package, the original motivation for its development is in our paper: Vehtari, A., Gelman, A., and Gabry, ... [Read more...]

loo 2.0 is loose

April 16, 2018 | Jonah Gabry

This post is by Jonah and Aki. We’re happy to announce the release of v2.0.0 of the loo R package for efficient approximate leave-one-out cross-validation (and more). For anyone unfamiliar with the package, the original motivation for its development is in our paper: Vehtari, A., Gelman, A., and Gabry, ... [Read more...]

loo 2.0 is loose

April 16, 2018 | Jonah

This post is by Jonah and Aki. We’re happy to announce the release of v2.0.0 of the loo R package for efficient approximate leave-one-out cross-validation (and more). For anyone unfamiliar with the package, the original motivation for its development is in our paper: Vehtari, A., Gelman, A., and Gabry, ... [Read more...]

a [Gregorian] calendar riddle

April 16, 2018 | xi'an

A simple riddle express this week on The Riddler, about finding the years between 2001 and 2099 with the most cases when day x month = year [all entries with two digits]. For instance, this works for 1 January, 2001 since 01=01 x 01. The only difficulty in writing an R code for this question […]
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News from the R Consortium

April 16, 2018 | David Smith

The R Consortium has been quite busy lately, so I thought I'd take a moment to bring you up to speed on some recent news. (Disclosure: Microsoft is a member of the R Consortium, and I am a member of its board of directors.) Many R Consortium funded projects are ... [Read more...]
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