Graphical Analysis of German Parliament Voting Pattern

May 17, 2016
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Graphical Analysis of German Parliament Voting Pattern

We use network visualizations to look into the voting patterns in the current German parliament. I downloaded the data here and all figures can be reproduced using the R code available on Github. Missing values, invalid votes, abstention from voting and not showing up for the vote weres coded as (-1), such that all other responses are...

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Updated Circular Plots for Directional Bilateral Migration Data

May 17, 2016
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Updated Circular Plots for Directional Bilateral Migration Data

I have had a few emails recently regarding plots from my new working paper on global migration flows, which has received some media coverage here, here and here. The plots were created using Zuguang Gu’s excellent circlize package and are modified version of those discussed in an earlier blog post. In particular, I have made … Continue reading...

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Best packages for data manipulation in R

May 17, 2016
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Best packages for data manipulation in R

There are 2 packages that make data manipulation in R fun. These are dplyr and data.table. Both packages have their strengths. While dplyr is more elegant and resembles natural language, data.table is succinct and we can do a lot with data.table in just a single line. Further, data.table is, in some cases, faster (see benchmark Related Post

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Principal Components Regression in R, an operational tutorial

May 17, 2016
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Principal Components Regression in R, an operational tutorial

John Mount Ph. D. Data Scientist at Win-Vector LLC Win-Vector LLC's Dr. Nina Zumel has just started a two part series on Principal Components Regression that we think is well worth your time. You can read her article here. Principal Components Regression (PCR) is the use of Principal Components Analysis (PCA) as a dimension reduction step prior to linear...

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flexdashboard: Easy interactive dashboards for R

May 17, 2016
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flexdashboard: Easy interactive dashboards for R

Today we’re excited to announce flexdashboard, a new package that enables you to easily create flexible, attractive, interactive dashboards with R. Authoring and customization of dashboards is done using R Markdown and you can optionally include Shiny components for additional interactivity. Highlights of the flexdashboard package include: Support for a wide variety of components including interactive htmlwidgets; base, lattice, and

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Playing With Julia (Set)

May 17, 2016
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Playing With Julia (Set)

Viento, me pongo en movimiento y hago crecer las olas del mar que tienes dentro (Tercer Movimiento: Lo de Dentro, Extremoduro) I really enjoy drawing complex numbers: it is a huge source of entertainment for me. In this experiment I play with the Julia Set, another beautiful fractal like this one. This is what I have … Continue reading...

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Graduate Econometrics Exam

May 17, 2016
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Occasionally readers ask about the exams that I set in my graduate econometrics courses.The elective graduate econometrics course that I taught this past semester was one titled "Themes in Econometrics". The topics that are covered vary from year to year. However, as the title suggests, the course focuses on broad themes that arise in econometrics. Examples might include...

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Principal Components Regression, Pt.1: The Standard Method

May 16, 2016
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In this note, we discuss principal components regression and some of the issues with it: The need for scaling. The need for pruning. The lack of “y-awareness” of the standard dimensionality reduction step. The purpose of this article is to set the stage for presenting dimensionality reduction techniques appropriate for predictive modeling, such as y-aware … Continue reading...

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RoogleVision released – a Package for Image Recognition

May 16, 2016
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RoogleVision released – a Package for Image Recognition

First to the naming; it basically is an arbitrary condensation of “R + Google Cloud Vision API”. I wonder why google chooses to mix google with vision. In my opinion it sounds pretty much like “to goggle with vision”, which makes limited sense. For the functionality; the package enables convenient Image Recognition, Object Detection, and OCR using the Google’s Cloud...

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Online R courses at Udemy – 30% promo code ($14-$35 per course)

May 16, 2016
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Online R courses at Udemy – 30% promo code ($14-$35 per course)

Udemy is offering readers of R-bloggers access to its global online learning marketplace with a (special) 30% off promo code (price range of $14-$35 per course). This deal is for hundreds of their courses (including many R-Programming, data science, machine learning etc.) use the code RBLOGGERS30 for an extra 30% discount Click here to browse ALL (R and non-R) courses Advanced R courses:  The...

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Documentation for Microsoft R Server now online

May 16, 2016
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Documentation for Microsoft R Server now online

If you've been thinking about trying the big-data capabilities of Microsoft R Server but wanted to check out the documentation first, you're in luck: the complete Microsoft R Server documentation is now available on MSDN (and is accessible to anyone). There's lots to explore here, but a few highlights you might want to check out include: Getting Started with...

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Animated great circles on rotating 3D Earth: Example R code

May 16, 2016
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Making still frames for great circle animations in R Matthew Leonawicz Here I share R code I used to produce animated great circle arcs on top of a rotating 3D Earth. The code is not entirely reproducible but you should be able to use what is shared here to create your own video frames given

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Case Study: Mapping German ZIP Codes in R

May 16, 2016
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Case Study: Mapping German ZIP Codes in R

Shortly after running a webinar last week I received an email from Achim Rumberger, who attended the webinar live. Achim immediately put the webinar material into use for his own project, which involves mapping ZIP Codes in Germany. This was the first case study I received related to my new course, Shapefiles for R Programmers, and I wanted to share The post

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The real prerequisite for machine learning isn’t math, it’s data analysis

May 16, 2016
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The real prerequisite for machine learning isn’t math, it’s data analysis

When beginners get started with machine learning, the inevitable question is “what are the prerequisites? What do I need to know to get started?” And once they start researching, beginners frequently find well-intentioned but disheartening advice, like the following: You need to master math. You need all of the following: – Calculus – Differential equations The post

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Map danish administrative areas with leaflet

May 16, 2016
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Map danish administrative areas with leaflet

What is this? a center for ants!? leafletDK is a package that makes it easy to create interactive dynamic leaflet maps based on danish administrative areas. The package is heavily inspired by the amazing mapDK package by Sebastian Barfort, which I recommend if you want to create static high quality maps. Getting started First you... Read more »

When the Predictions are more accurate than the Response

May 15, 2016
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The purpose of this post is to discuss the methodology of classifying paragraphs of documents, where the document is only assigned one topic. In my usage, a document is an article that is assigned a Section (Business, Economics / Finance, Science, Europe, Middle East, etc). Of course each article can have multiple topics discussed. For Example; a discussion on...

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One function to run them all… Or just eval

May 15, 2016
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When I was writing a sysBio package, I needed a function that can be customized based on the user specified model. Such function would include user specified variables (parameters, rates, etc.) with assigned values, functions/expression that use those variables, and … Continue reading →

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Bullet Charts in R using Plotly

May 15, 2016
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This post is inspired by Mike Bostock’s implementation of bullet charts – http://bl.ocks.org/mbostock/4061961

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Inventing new words. Tribute to Umberto Eco

May 15, 2016
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Inventing new words. Tribute to Umberto Eco

I would like to propose, as a kind of tribute and language game, a method for inventing words —actually, more an algorithm than a method. The post Inventing new words. Tribute to Umberto Eco appeared first on MilanoR.

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“R for Developers” Course | May 30-31

May 15, 2016
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Move forward from being a R user to become a R developer. Discover from an inner perspective the R working mechanisms and master your R programming skills. The post "R for Developers" Course | May 30-31 appeared first on MilanoR.

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reversible chain[saw] massacre

May 15, 2016
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reversible chain[saw] massacre

A paper in Nature this week that uses reversible-jump MCMC, phylogenetic trees, and Bayes factors. And that looks at institutionalised or ritual murders in Austronesian cultures. How better can it get?! “by applying Bayesian phylogenetic methods (…) we find strong support for models in which human sacrifice stabilizes social stratification once stratification has arisen, and

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2016 Fantasy Football Projections

May 15, 2016
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2016 Fantasy Football Projections

We are releasing our 2016 fantasy football projections in an OpenCPU app.  The app allows you to calculate custom rankings/projections for your league based on your league settings.  The projections The post 2016 Fantasy Football Projections appeared first on Fantasy Football Analytics.

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How to bulk upload your data from R into Redshift

May 15, 2016
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How to bulk upload your data from R into Redshift

Amazon's columnar database, Redshift is a great companion for a lot of Data Science tasks, it allows for fast processing of very big datasets, with a familiar query language (SQL). There are 2 ways to load data into Redshift, the classic one, using th...

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Rcpp 0.12.5: Yet another one

The fifth update in the 0.12.* series of Rcpp has arrived on the CRAN network for GNU R a few hours ago, and was just pushed to Debian. This 0.12.5 release follows the 0.12.0 release from late July, the 0.12.1 release in September, the 0.12.2 release in November, the 0.12.3 release...

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Global Temperature Change in R & D3 (without the vertigo)

May 14, 2016
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Global Temperature Change in R & D3 (without the vertigo)

This made the rounds on social media last week: Spiraling global temperatures from 1850-2016 (full animation) https://t.co/YETC5HkmTr pic.twitter.com/Ypci717AHq— Ed Hawkins (@ed_hawkins) May 9, 2016 One of the original versions was static and was not nearly as popular, but—as you can see—this one went viral. Despite the public’s infatuation with circles (I’m lookin’ at you, pie... Continue reading →

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PDQ 7.0 Dev is Underway

May 14, 2016
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PDQ 7.0 Dev is Underway

The primary goal for this release is to make PDQ acceptable for uploading to CRAN. This is a non-trivial exercise because there is some legacy C code in the PDQ library that needs to be reorganized while, at the same time, keeping it consistent for programmatically porting to other languages besides R—chiefly Perl (for the book)...

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Re-introducing cricketr! : An R package to analyze performances of cricketers

May 14, 2016
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Re-introducing cricketr! : An R package to analyze performances of cricketers

In this post I re-introduce R package cricketr. I have added 8 new functions to my R package cricketr, available from version cricketr_0.0.13 namely batsmanCumulativeAverageRuns batsmanCumulativeStrikeRate bowlerCumulativeAvgEconRate bowlerCumulativeAvgWicketRate relativeBatsmanCumulativeAvgRuns relativeBatsmanCumulativeStrikeRate relativeBowlerCumulativeAvgWickets relativeBowlerCumulativeAvgEconRate This post updates my earlier post Introducing cricketr:An R package for analyzing performances of cricketrs Yet all experience is an arch wherethro’ Gleams

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Dumbbells get a little gg-smarter?

May 14, 2016
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Dumbbells get a little gg-smarter?

Bob Rubis @hrbrmstr recently has blogged several interesting posts about making dumbbell plots with ggplot2 via his package ggalt. @Tylerrinker did some really nice work reproducing a Pew dumbbell plot back in early 2015, which I found really helpful. Seeing @hrbrmstr’s posts reminded me of a project I...

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Update on Attilio Meucci’s The Checklist and ARPM Bootcamp / Code

May 14, 2016
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Last week I organised for Attilio Meucci to give a webinar to members of CFA Singapore and NUS Risk Management Institute on an Introduction to “The Checklist” – Ten Steps for Advanced Risk and Portfolio Management. It served the dual-purpose of a professional development talk and marketing of the upcoming ARPM Bootcamp on 15-20 August in...

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