I missed two weeks and haven’t had time to create a dedicated blog for Stan yet, so we’re still here. This is only the update for this week. From now on, I’m going to try to concentrate on things that are done, not just in progress so ... [Read more...]

I missed two weeks and haven’t had time to create a dedicated blog for Stan yet, so we’re still here. This is only the update for this week. From now on, I’m going to try to concentrate on things that are done, not just in progress so ... [Read more...]

The Projects chapter of my Empirical software engineering book has been added to the draft pdf (download here). This material turned out to be harder to bring together than I had expected. Building software projects is a bit like making sausages in that you don’t want to know the ... [Read more...]

Microsoft R Open (MRO), Microsoft's enhanced distribution of open source R, has been upgraded to version 3.4.2 and is now available for download for Windows, Mac, and Linux. This update upgrades the R language engine to the latest R 3.4.2 and updates the bundled packages. MRO is 100% compatible with all R packages. ... [Read more...]

I've been using the ggplot2 package a lot recently. When creating a legend or tick marks on the axes, ggplot2 uses the levels of a character or factor vector. Most of the time, I am working with coded variables that use some abbreviation of the "true" meaning (e.g. "f" ... [Read more...]

One of my journalist friend was looking at the result of the local election in Luxembourg and he was dissatisfied because he was unable to compare the results of all the communes. In fact, he wanted to compare the number of women that were candidates in each commune. So I ... [Read more...]

Adnan Fiaz With two out of three EARL conferences part of R history we’re really excited about the next EARL conference in Boston (only 1 week away!). This calls for an(other) EARL conference analysis, this time with Twitter data. Twitter is an amazingly rich data source and a great ... [Read more...]

Week 8 Gold Mining and Fantasy Football Projection Roundup now available. Go get that free agent gold! The post Gold-Mining – Week 8 (2017) appeared first on Fantasy Football Analytics. [Read more...]

by Błażej Moska, computer science student and data science intern One of the most important thing in predictive modelling is how our algorithm will cope with various datasets, both training and testing (previously unseen). This is strictly connected with the concept of bias-variance tradeoff. Roughly speaking, variance of ... [Read more...]

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Model interpretation is essential in the social sciences. If one wants to know the effect of variable x on the dependent variable y, marginal effects are an easy way to get the answer. STATA includes a margins command that has been ported to R by Thomas J. Leeper of the ... [Read more...]

Leveraging tidyverse packages httr, stringr & purrr - Introduction McDonald’s is a nostalgic component of America ???????? and a pioneer of fast food operations and real estate ventures, as depicted in the 2016 film, The Founder, about Ray Kroc. As a kid I traveled to different McDonald’s across the east coast ... [Read more...]

Leveraging tidyverse packages httr, stringr & purrr - Introduction McDonald’s is a nostalgic component of America ?? and a pioneer of fast food operations and real estate ventures, as depicted in the 2016 film, The Founder, about Ray Kroc. As a kid I traveled to different McDonald’s across the east coast ... [Read more...]

Model interpretation is essential in the social sciences. If one wants to know the effect of variable x on the dependent variable y, marginal effects are an easy way to get the answer. STATA includes a margins command that has been ported to R by Thomas J. Leeper of the ... [Read more...]

We’re into the fourth day of Business Science Demo Week. We have a really cool one in store today: tibbletime, which uses a new tbl_time class that is time-aware!! For those that may have missed it, every day this week we are demo-ing an R package: tidyquant (Monday), ... [Read more...]

Two new Microsoft webinars are taking place over the next week that may be of interest: AI Development in Azure using Data Science Virtual Machines The Azure Data Science Virtual Machine (DSVM) provides a comprehensive development and production environment to Data Scientists and AI-savvy developers. DSVMs are specialized virtual machine ... [Read more...]

STREAK RESULTS FOR LIKELY (__50%) and HIGHLY LIKELY (__99%) Click to enlarge From research on the hot hand to the observation that people don’t create enough streaks when instructed to create pseudo random data, the decision science community is pretty interested in the perception of streaks. One day we got to ... [Read more...]

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