February 2017

random 0.2.6

February 5, 2017 | Thinking inside the box

A pure maintenance release of the random package for truly (hardware-based) random numbers as provided by random.org is now on CRAN. As requested by CRAN, we made running tests optional. Not running tests is clearly one way of not getting (spurious, ... [Read more...]

Naming Uncertainty by the Bootstrap

February 5, 2017 | Theory meets practice...

Abstract Data on the names of all newborn babies in Berlin 2016 are used to illustrate how a scientific treatment of chance could enhance rank statements in, e.g., onomastics investigations. For this purpose, we first identify different stages of the naming-your-baby process, which are influenced by chance. Second, we compute ... [Read more...]

Hubway Bike Share: Ridership Patterns

February 5, 2017 | Thomas Kassel

Contributed by Thomas Kassel. He is currently enrolled in the NYC Data Science Academy 17-week remote bootcamp program taking place from January-April 2017. This post is based on his first class project, Exploratory […] The post Hubway Bike Share: Ridership Patterns appeared first on NYC Data Science Academy Blog. [Read more...]

The animals of #actuallivingscientists

February 4, 2017 | Maëlle Salmon

These last days a trending Twitter hashtag was “#actuallivingscientist”, whose origin can be find in this convo and whose original goal was to allow scientists to present themselves to everyone, a sort of #scicomm action. A great initiative, becaus... [Read more...]

Sex ratios in all countries from Human Mortality Database

February 4, 2017 | Ilya Kashnitsky

Sex ratios reflect the two basic regularities of human demographics: 1) there are always more boys being born; 2) males experience higher mortality throughout their life-course. The sex ratio at birth does not vary dramatically1 and is more or less constant at the level of 105-106 boys per 100 girls. Hence, differences in ...
[Read more...]

The animals of #actuallivingscientists

February 4, 2017 | Maëlle Salmon

These last days a trending Twitter hashtag was “#actuallivingscientist”, whose origin can be find in this convo and whose original goal was to allow scientists to present themselves to everyone, a sort of #scicomm action. A great initiative, becaus... [Read more...]

Starry Night Plots

February 4, 2017 | max humber

I think good data science reads like a good story. In that it flows. Has an arc. And is compelling. But data science has a dirty secret. For every piece that works, there are about nine others that didn’t. Nine other stories that look like they were... [Read more...]

RcppCCTZ 0.2.1

February 4, 2017 | Thinking inside the box

A new minor version 0.2.1, of RcppCCTZ is now on CRAN. It corrects a possible shortcoming and rounding in the conversion from internal representation (in C++11 using int64_t) to the two double values for seconds and nanoseconds handed to R. Two other... [Read more...]

nanotime 0.1.1

February 4, 2017 | Thinking inside the box

A new version of the nanotime package for working with nanosecond timestamps is now on CRAN. nanotime uses the RcppCCTZ package for (efficient) high(er) resolution time parsing and formatting, and the bit64 package for the actual integer64 arithmetic... [Read more...]

Science of The Super Bowl

February 4, 2017 | Jesse

A couple days ago, I participated in a Science of the Super Bowl Panel discussion organized by Newswise. I was asked to give a 5 (which turned more into about 10) minute overview, so I focused on answering 3 questions. What is data science? How is data science used in the NFL? How ...
[Read more...]

Nice graphic? Are they taking the p…

February 4, 2017 | nsaunders

Yes, it started with a tweet: Nice graphic on urine components via https://t.co/sfuXNB02sF pic.twitter.com/vhVLahQ8su — Metabolomics (@metabolomics) January 31, 2017 By what measure is this a “nice graphic”? First, the JPEG itself is low-quality. Second, it contains spelling and numerical errors (more on that later). ...
[Read more...]

Quant Screening Backtesting: Turnaround Stocks

February 3, 2017 | Carlos Salas Najera

Introduction: What are turnaround stocks? Turnaround investing is the process of looking for investment opportunities in down-and-out companies that are poised to experience a financial recovery. […] The post Quant Screening Backtesting: Turnaround Stocks appeared first on NYC Data Science Academy Blog. [Read more...]

RevoScaleR package for Microsoft R

February 3, 2017 | tomaztsql

RevoscaleR Package for R language is  package for scalable, distributed and parallel computation, available along with Microsoft R Server (and in-Database R Services). It solves many of limitations that R language is facing when run from a client machine. RevoScaleR Package addresses several of these issues: memory based data access ...
[Read more...]

Candy Coated Confidence Intervals

February 3, 2017 | hrbrmstr

@mrshrbrmstr hinted that she would like this post by @RickWicklin translated into R for her stats class. She’s quite capable of cranking out the translation of the core component of that post — a call to chisq.test — but she wanted to show the entire post (in R) and really ... [Read more...]

Superheat: supercharged heatmaps for R

February 3, 2017 | David Smith

The heatmap is a useful graphical tool in any data scientist's arsenal. It's a useful way of representing data that naturally aligns to numeric data in a 2-dimensional grid, where the value of each cell in the grid is represented by a color. It's a natural fit for data that's ... [Read more...]

Creating a network using R

February 3, 2017 | Mauricio Vargas S. 帕夏

On January, 10 2016 David Bowie left this earthly realm. Last month I decided to create a network and here is how to do that. Required packages You need jsonlite, igraph, network, plyr and R base. Other tools D3Plus by Alex Simoes and Dave Landry. Also Google Sheets. My data is ... [Read more...]

RPushbullet 0.3.0

February 3, 2017 | Thinking inside the box

A major new update of the RPushbullet package is now on CRAN. RPushbullet interfacing the neat Pushbullet service for inter-device messaging, communication, and more. It lets you easily send alerts like the one to the to your browser, phone, tablet,... [Read more...]
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