January 2017

an express riddle

January 19, 2017 | xi'an

A quick puzzle on The Riddler this week that enjoys a quick solution once one writes it out. The core of the puzzle is about finding the average number of draws one need to empty a population of size T if each draw is uniform over the remaining number of ...
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Microsoft R Server in the News

January 19, 2017 | David Smith

Since the release of Microsoft R Server 9 last month, there's been quite a bit of news in the tech press about the capabilities it provides for using R in production environments. Infoworld's article, Microsoft’s R tools bring data science to the masses, takes a look back at Microsoft's vision ... [Read more...]

Principal Component Analysis

January 19, 2017 | Aaron Schlegel

Often, it is not helpful or informative to only look at all the variables in a dataset for correlations or covariances. A preferable approach is to derive new variables from the original variables that preserve most of the information given by their variances. Principal component analysis is a widely used... ...
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IMDB Movie Analysis

January 19, 2017 | S. Richter-Walsh

Movies of late haven’t impressed (this viewer anyhow) and I keep finding myself returning to classics of the 1980’s and 1990’s to get my movie fix. While browsing through Kaggle datasets, I came across the IMDB 5000 Movie Dataset which contains data on over 5000 movies scraped from the IMDB website. ...
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ARIMA Modeling with R

January 19, 2017 | DataCamp Blog

We just launched ARIMA Modeling with R taught by David Stoffer. David Stoffer is a Professor of Statistics at the University of Pittsburgh. He is also a member of the editorial board of the Journal of Time Series Analysis and Journal of Forecasting. ... [Read more...]

R for Beginners: Logistic Regression

January 19, 2017 | Traversing Bits

R is a great tool to test regression models. The following is an R code for a logistic regression model. The objective of this model is to find effects of collective coping and social movement intent on the choice of… Continue Reading → The post R for Beginners: Logistic Regression appeared ... [Read more...]

Plotly : Advanced plots and features

January 19, 2017 | Sai Lalith

Plotly is a d3 based graphing library used to produce interactive and high quality graphs in R. In the following exercises, we will look at some advanced plots and features avaialable in the package. Please note that the list here is not exhaustive. We will use datasets available in base ... [Read more...]

Women in the 2016 Stack Overflow Survey

January 18, 2017 | Rstats on Julia Silge

Note: Cross-posted with the Stack Overflow blog The 2017 Stack Overflow Developer Survey opened last week, and we on the Data Team are looking forward to analyzing the survey results to better understand our developer community. I am particularly interested in women in tech, for probably obvious reasons, and recently I ... [Read more...]

Diversity in the R Community

January 18, 2017 | David Smith

In the follow-up to the useR! conference in Stanford last year, the Women in R Task force took the opportunity to survey the 900-or-so participants about their backgrounds, experiences and interests. With 455 responses, the recently-published results provide an interesting snapshot about the R community (or at least that subset able ... [Read more...]

Euler Problem 8: Largest Product in a Series

January 18, 2017 | Peter Prevos

Solution to Euler Problem 8 in the R Language for Statistical Computing. Find the thirteen adjacent digits in the 1,000-digit number that have the greatest product. What is the value of this product? Continue reading → The post Euler Problem 8: Largest Product in a Series appeared first on The Devil is in ... [Read more...]

Reproducible Finance with R: Sector Correlations

January 18, 2017 | Jonathan Regenstein

by Jonathan Regenstein Welcome to the first installation of reproducible finance for 2017. It’s a new year, a new President takes office soon, and we could be entering a new political-economic environment. What better time to think about a popular topic over the last few years: equity correlations. Elevated correlations ... [Read more...]

GitHub Growth Appears Scale Free

January 18, 2017 | Neil Gunther

In 2013, a blogger claimed that the growth of GitHub (GH) users follows a certain type of diffusion model called Bass diffusion. Growth here refers to the number of unique user IDs as a function of time, not the number project repositories, which can have a high degree of multiplicity. In ...
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Workout Wednesday Redux (2017 Week 3)

January 18, 2017 | hrbrmstr

I had started a “52 Vis” initiative back in 2016 to encourage folks to get practice making visualizations since that’s the only way to get better at virtually anything. Life got crazy, 52 Vis fell to the wayside and now there are more visible alternatives such as Makeover Monday and Workout Wednesday. ...
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Elements of a successful #openscience #rstats workshop

January 18, 2017 | lortie

What makes an open science workshop effective or successful*? Over the last 15 years, I have had the good fortune to participate in workshops as a student and sometimes as an instructor. Consistently, there were beneficial discovery experiences, and at times, some of the processes highlighted have been transformative. Last year, ... [Read more...]
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