[NYC] Featured R experts Meetup, R classes and 12 week Data Science Bootcamp

December 28, 2014
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[NYC] Featured R experts Meetup, R classes and 12 week Data Science Bootcamp

There are a few exciting announcements I would love to share with R community. We feel very honored to host meetup and class offered by Kaggle #1 ranked Data Scientist, Owen Zhang and book author of Applied predictive modeling, Max Kuhn. Featured R experts meetup Featured talk given by Kaggle world ranked #1 Owen Zhang

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Introductory R Presentation

December 27, 2014
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I put together a short intro presentation for some people explaining a little bit about R from an introductory point of view. Slides put together with R/markdown and ioslides....

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Snowdoop/partools Update

December 27, 2014
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Snowdoop/partools Update

I’ve put together an updated version of my partools package, including Snowdoop, an alternative to MapReduce algorithms.  You can download it here, version 1.0.1. To review:  The idea of...

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Fitting a mixture of independent Poisson distributions

December 26, 2014
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Fitting a mixture of independent Poisson distributions

This is an example from Zucchini & MacDonald’s book on Hidden Markov Models for Time Series (exercise 1.3). The data is annual counts of earthquakes of magnitude 7...

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Create an R-tree data structure using Rcpp and Boost::Geometry

December 26, 2014
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Create an R-tree data structure using Rcpp and Boost::Geometry

Introduction The purpose of this post is to show how to use Boost::Geometry library which was introduced recently in Rcpp. Especially, we focus on R-tree data structure for searching objects in space...

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Animations and GIFs using ggplot2

December 26, 2014
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Animations and GIFs using ggplot2

Tracing a regression lineDiverging density plotsHappy New Year plot Happy New Year everyone! For the last post of the year, I thought I'd have a little fun with the...

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rfoaas 0.0.4.20141225 — not on CRAN

December 25, 2014
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A new version of rfoaas was prepared for CRAN, but refused on the grounds of having been updated within 24 hours. Oh well. To recap, the rfoaas package provides...

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Principal Component Analysis on Imaging

December 25, 2014
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Principal Component Analysis on Imaging

Ever wonder what's the mathematics behind face recognition on most gadgets like digital camera and smartphones? Well for most part it has something to do with statistics. One...

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rfoaas 0.0.4.20141224

December 24, 2014
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A new version of rfoaas is now on CRAN. The rfoaas package provides an interface for R to the most excellent FOAAS service -- which provides a modern,...

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Time Stacking and Time Slicing in R

December 24, 2014
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Time Stacking and Time Slicing in R

Time lapses are a fun way to quickly show a long period of time. They typically involve setting up your camera on a tripod and taking photos at a...

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Visualizing APA 6 Citations: qdapRegex 0.2.0 & qdapTools 1.1.0

December 24, 2014
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Visualizing APA 6 Citations: qdapRegex 0.2.0 & qdapTools 1.1.0

qdapRegex 0.2.0 & qdapTools 1.1.0 have been released to CRAN.  This post will provide some of the packages’ updates/features and provide an integrate demonstration of extracting and viewing in-text...

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Plotting Fundamentals Chapter

December 24, 2014
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Plotting Fundamentals Chapter

I have uploaded a draft of Chapter 3 — Plotting Fundamentals — for the Introduction to Fisheries Analyses with R (IFAR) book (note the new name).  This chapter is meant to...

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Explore a comet with R’s "rgl" package

December 24, 2014
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Explore a comet with R’s "rgl" package

Last month, the Philae lander touched down on comet Churyumov–Gerasimenko. In the process, the lander and the orbiting Rosetta probe captured detailed data on the geometry of the comet,...

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Update on improving examples in base-R

December 24, 2014
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Update on improving examples in base-R

Last month I was ranting about the state of some of the examples in base-R, particularly the paste function. Martin Maechler has now kindly taken my suggested examples and...

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Di Cook is moving to Monash

December 23, 2014
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Di Cook is moving to Monash

I’m delighted that Professor Dianne Cook will be joining Monash University in July 2015 as a Professor of Business Analytics. Di is an Australian who has worked in the US...

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XSLT, yacc and Yorick

December 23, 2014
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XSLT, yacc and Yorick

X and Y are for XSLT, yacc and Yorick. XSLT is the tree climbing Kangaroo of the programming language world. Eating your own dog food is good practice for...

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Interactive JavaScript in R with V8: a crossfilter example

December 23, 2014
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Interactive JavaScript in R with V8: a crossfilter example

In last weeks blog post introducing the new V8 package I showed how you can use context$eval and context$source to execute...

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RcppEigen 0.3.2.3.0

December 23, 2014
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A new release of RcppEigen is now on CRAN, and will get to Debian shortly. This is thanks to a fabulous pull request by Yixuan Qiu who single-handedly managed...

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A Way To Model Execution On Individual Legs Of A Spread In Quantstrat

December 23, 2014
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A Way To Model Execution On Individual Legs Of A Spread In Quantstrat

In this post, I’ll attempt to address a question I’ve seen tossed around time and again regarding quantstrat. “How do … Continue reading →

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Hadley Wickham Master R Developer Workshop – Space Limited

December 23, 2014
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Hadley Wickham Master R Developer Workshop – Space Limited

Give yourself the gift of “mastering” R to start 2015! Join RStudio Chief Data Scientist Hadley Wickham at the Westin San Francisco on January 19 and 20 for this...

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Explore Kaggle Competition Data with R

December 23, 2014
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Explore Kaggle Competition Data with R

I wanted to pick a topic that involved some webscraping and so decided to get some data from Kaggle. I put down some questions that could potentially be answered...

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Does Trend Following Work?

December 23, 2014
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Does Trend Following Work?

I’m not sure how I came across it, but I have had Jez Liberty’s Au.Tra.Sy blog in my reader since around 2009. Since then, he has tracked...

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Mixing Benford, GoogleVis And On-Line Encyclopedia of Integer Sequences

December 22, 2014
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Mixing Benford, GoogleVis And On-Line Encyclopedia of Integer Sequences

The chess-board is the world; the pieces are the phenomena of the universe; the rules of the game are what we call the laws of Nature (T. H. Huxley)...

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The evolution of the Queen’s Christmas speech

December 22, 2014
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The evolution of the Queen’s Christmas speech

Every year since her inauguration in 1952, Queen Elizabeth II has delivered a Christmas Broadcast to her subjects. Dominic Nyhuis used R to analyze the transcripts of the speeches,...

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Adding Cost Functions to ROCR performance objects

December 22, 2014
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Adding Cost Functions to ROCR performance objects

In my last post, I gave an introduction of the ROCR package and how to use it for ROC analysis. In the ROCR reference manual, it states “new performance...

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Contextual Measurement Is a Game Changer

December 22, 2014
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Contextual Measurement Is a Game Changer

Adding a context can change one's frame of reference:Are you courteous? Are you courteous at work? Decontextualized questions tend to activate a self-presentation strategy and retrieve memories of past positioning of...

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BH release 1.55.0-1

December 22, 2014
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A new release of BH, our package providing (a large part of the) Boost C++ libraries as a set of template headers for use by R, is now...

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Is there a Kindle edition of Practical Data Science with R?

December 21, 2014
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Is there a Kindle edition of Practical Data Science with R?

We have often been asked “why is there no Kindle edition of Practical Data Science with R on Amazon.com?” The short answer is: there is an edition you can...

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If only there was a Romeo somewhere …

December 21, 2014
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Attention: rant coming. You have been warned, and may want to tune out now. So the top of my Twitter timeline just had a re-tweet posting to this marvel...

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