November 2017

Measuring & Monitoring Internet Speed with R

November 11, 2017 | hrbrmstr

Working remotely has many benefits, but if you work remotely in an area like, say, rural Maine, one of those benefits is not massively speedy internet connections. Being able to go fast and furious on the internet is one of the many things I miss about our time in Seattle ... [Read more...]

Deep Learning with Keras – using R (talk)

November 11, 2017 | recurrentnull

This week in Kassel, [R]Kenntnistage 2017 took place, organised by EODA. It was all about Data Science (with R, mostly, as you could guess): Speakers presented interesting applications in industry, manufacturing, ecology, journalism and other fields, including use cases such as predictive maintenance, forecasting and risk analysis. I had the ... [Read more...]

Topic Modeling: An Application

November 10, 2017 | R on Salfo Bikienga

Introduction My work involves the use and the development of topic modeling algorithms. A surprising challenge I have had is communicating the output of topic modeling algorithms to people not familiar with text analytics. Here is my 10 cents explanation of the LDA output to my econ friends. The use of ... [Read more...]

Creating integer64 and nanotime vectors in C++

November 10, 2017 | Rcpp Gallery

Motivation: More Precise Timestamps R has excellent facilities for dealing with both dates and datetime objects. For datetime objects, the POSIXt time type can be mapped to POSIXct and its representation of fractional seconds since the January 1, 1970 “epoch” as well as to the broken-out list representation in POSIXlt. Many add-on ... [Read more...]

Stan Roundup, 10 November 2017

November 10, 2017 | Bob Carpenter

We’re in the heart of the academic season and there’s a lot going on. James Ramsey reported a critical performance regression bug in Stan 2.17 (this affects the latest CmdStan and PyStan, not the latest RStan). Sean Talts and Daniel Lee diagnosed the underlying problem as being with the ... [Read more...]

Stan Roundup, 10 November 2017

November 10, 2017 | Bob Carpenter

We’re in the heart of the academic season and there’s a lot going on. James Ramsey reported a critical performance regression bug in Stan 2.17 (this affects the latest CmdStan and PyStan, not the latest RStan). Sean Talts and Daniel Lee diagnosed the underlying problem as being with the ... [Read more...]

Stan Roundup, 10 November 2017

November 10, 2017 | Bob Carpenter

We’re in the heart of the academic season and there’s a lot going on. James Ramsey reported a critical performance regression bug in Stan 2.17 (this affects the latest CmdStan and PyStan, not the latest RStan). Sean Talts and Daniel Lee diagnosed the underlying problem as being with the ... [Read more...]

Durban Twitter Analysis

November 10, 2017 | R on datawookie

I was invited to give a talk at Digifest (Durban University of Technology) on 10 November 2017. Looking at the other speakers and talks on the programme I realised that my normal range of topics would not be suitable. I needed to do something more in line with their mission to “celebrate ...
[Read more...]

.rprofile: Mara Averick

November 9, 2017 | rOpenSci - open tools for open science

Mara Averick is a non-profit data nerd, NBA stats junkie, and most recently, tidyverse developer advocate at RStudio. She is the voice behind two very popular Twitter accounts, @dataandme and @batpigandme. Mara and I discussed sports analytics, how attending a cool conference can change the approach to your career, and ...
[Read more...]

Recap: EARL Boston 2017

November 9, 2017 | Guest Blogger

By Emmanuel Awa, Francesca Lazzeri and Jaya Mathew, data scientists at Microsoft A few of us got to attend EARL conference in Boston last week which brought together a group of talented users of R from academia and industry. The conference highlighted various Enterprise Applications of R. Despite being a ... [Read more...]

How Happy is Your Country? — Happy Planet Index Visualized

November 9, 2017 | Susan Li

The Happy Planet Index (HPI) is an index of human well-being and environmental impact that was introduced by NEF, a UK-based economic think tank promoting social, economic and environmental justice. It ranks 140 countries according to “what matters most — sustainable wellbeing for all”. This is how HPI is calculated: It’s ...
[Read more...]

Make memorable plots with memery. v0.3.0 now on CRAN.

November 8, 2017 | Matt's R Blog

Make memorable plots with memery. memery is an R package that generates internet memes including superimposed inset graphs and other atypical features, combining the visual impact of an attention-grabbing meme with graphic results of data analysis. Version 0.3.0 of memery is now on CRAN. The latest development version and a package ...
[Read more...]

Introduction to Visualizing Asset Returns

November 8, 2017 | R Views

In a previous post, we reviewed how to import daily prices, build a portfolio, and calculate portfolio returns. Today, we will visualize the returns of our individual assets that ultimately get mashed into a portfolio. The motivation here is to make sure we have scrutinized our assets before they get ...
[Read more...]

bridgesampling [R package]

November 8, 2017 | xi'an

Quentin F. Gronau, Henrik Singmann and Eric-Jan Wagenmakers have arXived a detailed documentation about their bridgesampling R package. (No wonder that researchers from Amsterdam favour bridge sampling!) [The package relates to a [52 pages] tutorial on bridge sampling by Gronau et al. that I will hopefully comment soon.] The bridge sampling ...
[Read more...]

Calculating the house edge of a slot machine, with R

November 8, 2017 | David Smith

Modern slot machines (fruit machine, pokies, or whatever those electronic gambling devices are called in your part of the world) are designed to be addictive. They're also usually quite complicated, with a bunch of features that affect the payout of a spin: multiple symbols with different pay scales, wildcards, scatter ... [Read more...]

New R Course: Introduction to the Tidyverse!

November 8, 2017 | Gabriel de Selding

Hi! Big announcement today as we just launched Introduction to the Tidyverse R course by David Robinson! This is an introduction to the programming language R, focused on a powerful set of tools known as the "tidyverse". In the course you'll learn the intertwined processes of data manipulation and visualization ...
[Read more...]
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