Thanks for Reading!

June 22, 2018
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Thanks for Reading!

As I've been blogging more about statistics, R, and research in general, I've been trying to increase my online presence, sharing my blog posts in groups of like-minded people. Those efforts seem to have paid off, based on my view counts over the past ...

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A guide to working with character data in R

June 22, 2018
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A guide to working with character data in R

R is primarily a language for working with numbers, but we often need to work with text as well. Whether it's formatting text for reports, or analyzing natural language...

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Using DataCamp’s Autograder to Teach R

June 22, 2018
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Using DataCamp’s Autograder to Teach R

Immediate and personalized feedback has been central to the learning experience on DataCamp since we launched the first courses. If students submit code that contains a mistake, they are...

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Melt and cast the shape of your data.frame – Exercises

June 22, 2018
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Melt and cast the shape of your data.frame – Exercises

  Datasets often arrive to us in a form that is different from what we need for our modelling or visualisations functions who in turn don’t necessary require the...

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Creating Slopegraphs with R

June 22, 2018
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Creating Slopegraphs with R

Presenting data results in the most informative and compelling manner is part of the role of the data scientist. It's all well and good to master the arcana of...

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Parallelizing Linear Regression or Using Multiple Sources

June 21, 2018
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Parallelizing Linear Regression or Using Multiple Sources

My previous post was explaining how mathematically it was possible to parallelize computation to estimate the parameters of a linear regression. More speficially, we have a matrix which is...

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Announcing new software review editors: Anna Krystalli and Lincoln Mullen

Announcing new software review editors: Anna Krystalli and Lincoln Mullen

Part of rOpenSci’s mission is to create technical infrastructure in the form of carefully vetted R software tools that lower barriers to working with data sources on the web....

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Idle thoughts lead to R internals: how to count function arguments

June 21, 2018
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Idle thoughts lead to R internals: how to count function arguments

“Some R functions have an awful lot of arguments”, you think to yourself. “I wonder which has the most?” It’s not an original thought: the same question as applied...

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A Comparative Review of the BlueSky Statistics GUI for R

June 21, 2018
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A Comparative Review of the BlueSky Statistics GUI for R

Introduction BlueSky Statistics’ desktop version is a free and open source graphical user interface for the R software that focuses on beginners looking to point-and-click their way through analyses.  A...

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Non-Linear Model in R Exercises

June 21, 2018
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A mechanistic model for the relationship between x and y sometimes needs parameter estimation. When model linearisation does not work,we need to use non-linear modelling. There are three main...

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Explaining Keras image classification models with lime

June 20, 2018
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Explaining Keras image classification models with lime

Last week I published a blog post about how easy it is to train image classification models with Keras. What I did not show in that post was how to...

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Scraping Responsibly with R

Scraping Responsibly with R

I recently wrote a blog post here comparing the number of CRAN downloads an R package gets relative to its number of stars on GitHub. What I didn’t...

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Le Monde puzzle [#1053]

June 20, 2018
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Le Monde puzzle [#1053]

An easy arithmetic Le Monde mathematical puzzle again: If coins come in units of 1, x, and y, what is the optimal value of (x,y) that minimises the number...

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Awesome Twitter Word Clouds in R

June 20, 2018
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Awesome Twitter Word Clouds in R

Tap into Twitter data and create custom word clouds that will visualize the conversation in an impactful way. Analysis performed with R.

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PYPL Language Rankings: Python ranks #1, R at #7 in popularity

June 20, 2018
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PYPL Language Rankings: Python ranks #1, R at #7 in popularity

The new PYPL Popularity of Programming Languages (June 2018) index ranks Python at #1 and R at #7. Like the similar TIOBE language index, the PYPL index uses Google...

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Big News: vtreat 1.2.0 is Available on CRAN, and it is now Big Data Capable

June 20, 2018
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We here at Win-Vector LLC have some really big news we would please like the R-community’s help sharing. vtreat version 1.2.0 is now available on CRAN, and this version...

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Neural Networks Are Essentially Polynomial Regression

June 20, 2018
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You may be interested in my new arXiv paper, joint work with Xi Cheng, an undergraduate at UC Davis (now heading to Cornell for grad school); Bohdan Khomtchouk, a...

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Intro To Time Series Analysis Part 2 :Exercises

June 19, 2018
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Intro To Time Series Analysis Part 2 :Exercises

In the exercises below, we will explore more in Time Series analysis.The previous exercise is here,Please follow this in sequence Answers to these exercises are available here. Exercise 1...

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Reading and analysing log files in the RRD database format

June 19, 2018
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Reading and analysing log files in the RRD database format

I have frequent conversations with R champions and Systems Administrators responsible for R, in which they ask how they can measure and analyze the usage of their servers. ...

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a chain of collapses

June 19, 2018
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a chain of collapses

A quick riddler resolution during a committee meeting (!) of a short riddle: 36 houses stand in a row and collapse at times t=1,2,..,36. In addition, once a house...

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Searching For Unicorns (And Other NBA Myths)

June 19, 2018
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Searching For Unicorns (And Other NBA Myths)

A visual exploration of the 2017-2018 NBA landscape The modern NBA landscape is rapidly changing. Steph Curry has redefined the lead guard prototype with jaw-dropping shooting range coupled with...

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Dear data scientists, how to ease your job

June 19, 2018
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Dear data scientists, how to ease your job

You have got the best job of the 21st century. Like a treasure hunter, looking for a data treasure chest while sailing through data lakes. In many companies you...

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11 Jobs for R users from around the world (2018-06-19)

June 18, 2018
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11 Jobs for R users from around the world (2018-06-19)

To post your R job on the next post Just visit  this link and post a new R job  to the R community. You can post a job for  free  (and there are...

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RStudio Connect v1.6.4

June 18, 2018
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RStudio Connect v1.6.4

RStudio Connect version 1.6.4 is now available! There are a few breaking changes and a handful of new features that are highlighted below. We encourage you to upgrade as soon as...

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Chat with the rOpenSci team at upcoming meetings

You can find members of the rOpenSci team at various meetings and workshops around the world. Come say ‘hi’, learn about how our software packages can enable your research,...

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Copy/paste t-tests Directly to Manuscripts

June 18, 2018
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Copy/paste t-tests Directly to Manuscripts

Do a t-test APA formatted output Flexibility Dataframe of Values Contribute Credits Previous blogposts One of the most time-consuming part of data analysis in...

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R vs Python: Image Classification with Keras

June 18, 2018
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R vs Python: Image Classification with Keras

Even though the libraries for R from Python, or Python from R code execution existed since years and despite of a recent announcement of Ursa Labs foundation by Wes...

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Linear Regression, with Map-Reduce

June 18, 2018
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Sometimes, with big data, matrices are too big to handle, and it is possible to use tricks to numerically still do the map. Map-Reduce is one of those. With...

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Statistics Sunday: Accessing the YouTube API with tuber

June 18, 2018
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Statistics Sunday: Accessing the YouTube API with tuber

I haven't had a lot of time to play with this but yesterday, I discovered the tuber R package, which allows you to interact with the YouTube API.To use...

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