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Six Sigma DMAIC Series in R – Part 3

July 15, 2018
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Six Sigma DMAIC Series in R – Part 3

Hope you liked the Part 1 and Part 2 of this Series. In this Part 3, we will go through the tools used during the analyze phase of Six Sigma DMAIC cycle. In this phase, available data is used to identify the key process inputs and their relation to the output. We will go through Related PostPrediction Interval, the...

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A thought experiment: How CRAN saved 3,620 (working) lives

July 15, 2018
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Given the vast amount of R packages available today, it makes sense (at least to me, as a trained economist) to ask a simple yet difficult question: How much value has been created by all those packages? As all R stuff on CRAN is open-source (...

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Mango at Insurance Data Science Conference

July 15, 2018
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Ruth Thomson, Strategic Innovation & Strategic Advice On Monday, I am very much looking forward to joining the panel discussion at the Insurance Data Science Conference at the Cass Business School alongside Kristen Dardia from Verisk Analytics and Hadrien Dykiel from R Studio. If you’re reading this on the 16th July, and currently at the conference after seeing me make...

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Alleviating AWS Athena Aggravation with Asynchronous Assistance

July 14, 2018
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I’ve blogged about how to use Amazon Athena with R before and if you are a regular Athena user, you’ve likely run into a situation where you prepare a dplyr chain, fire off a collect() and then wait. And, wait. And, wait. And, wait. Queries that take significant processing time or have large result sets... Continue reading →

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Variable vs. Participant-wise Standardization

July 13, 2018
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Variable vs. Participant-wise Standardization

The data Standardize Effect of Standardization At a general level At a participant level Distribution Correlation Test Conclusion Credits Previous blogposts To make sense of their data and effects, psychologists often standardize (Z-score) their variables. However,...

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Seasonal decomposition of short time series

July 13, 2018
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Many users have tried to do a seasonal decomposition with a short time series, and hit the error “Series has less than two periods”. The problem is that the usual methods of decomposition (e.g., decompose and stl) estimate seasonality using at least as many degrees of freedom as there are seasonal periods. So you need at least two observations per...

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Why I rarely use apply

July 13, 2018
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Why I rarely use apply

In this short post, I talk about why I’m moving away from using function apply. With matrices It’s okay to use apply with a dense matrix, although you can often use an equivalent that is faster. N

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[Web2Day] Producing web content with R

July 13, 2018
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[Web2Day] Producing web content with R

Earlier this week, my talk at the Web2Day conference was put online. Here is an english summary for those who don’t understand french :) Disclaimer: this talk has been given during a conference about web technologies. In other word,in front of a crowd that has never / hardly heard about R before. If you’re already familiar with R, Rmarkdown,...

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From Data to Viz | Find the graphic you need

July 13, 2018
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From Data to Viz | Find the graphic you need

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Stencila – an office suite for reproducible research

July 13, 2018
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Stencila – an office suite for reproducible research

Stencila launches the first version of its (open source) word processor and spreadsheet editor designed for researchers. By Michael Aufreiter, Substance, and Aleksandra Pawlik and Nokome Bentley, Stencila Stencila is an open source office suite designed for researchers. It allows the authoring of interactive, data-driven publications in visual interfaces, similar to those in conventional office … Continue reading Stencila...

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