Ebola, Wikipedia and data janitors

September 21, 2014
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Ebola, Wikipedia and data janitors

Sometimes, several strands of thought come together in one place. For me right now, it’s the Wikipedia page “Ebola virus epidemic in West Africa”, which got me thinking about the perennial topic of “data wrangling”, how best to provide public data and why I can’t shake my irritation with the term “data science”. Not to

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Build Predictive Model on Big data: Using R and MySQL Part-3

September 21, 2014
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Build Predictive Model on Big data: Using R and MySQL Part-3

Welcome to last part of the series post again! In previous part I discussed about the solutions to the questions mentioned in first part. In this part, we will...

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Build Predictive Model on Big data: Using R and MySQL Part-2

September 21, 2014
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Build Predictive Model on Big data: Using R and MySQL Part-2

Welcome to the second part of the series blog posts. In first part we tried to understand the challenges of fitting predictive model to the large dataset. In this...

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Build Predictive Model on Big data: Using R and MySQL Part-1

September 21, 2014
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Build Predictive Model on Big data: Using R and MySQL Part-1

Wellcome to the series blog posts. Since long time, I am writing post on Machine learning with R. Today I am gonna discuss on big data problem while fitting...

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Effective risk management with R

September 21, 2014
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Effective risk management with R

Conference The first EARL Conference (Effective Applications of the R Language) was held 2014 September 15-17 in London. Talk My talk was “Effective risk management with R” (annotated slides)....

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Trying dplyr on triathon data

September 21, 2014
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Trying dplyr on triathon data

There was a triathlon in Almere last week, like every year since 1983. I pulled the data of all years to get some idea how things have changed in...

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FPP now available as a downloadable e-book

September 20, 2014
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FPP now available as a downloadable e-book

My forecasting textbook with George Athanasopoulos is already available online (for free), and in print via Amazon (for under $40). Now we have made it available as a downloadable e-book...

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Generate Random Inverse Gaussian in R

September 20, 2014
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Generate Random Inverse Gaussian in R

Needed to generate draws from an inverse Gaussian today, so I wrote the following Rcpp code: It seems to be faster than existing implementations such as rig from mgcv...

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Brazilian Presidential Election

September 20, 2014
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Brazilian Presidential Election

TweetFor those who follow this tale, the chart below shows the hitherto of vote intentions among the viable candidates as reported in various polls. Data collected over 2012 were...

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Charting/Mapping the Scottish Vote with R (an rvest/dplyr/tidyr/TopoJSON/ggplot tutorial)

September 20, 2014
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Charting/Mapping the Scottish Vote with R (an rvest/dplyr/tidyr/TopoJSON/ggplot tutorial)

The BBC did a pretty good job live tracking the Scotland secession vote, but I really didn’t like the color scheme they chose and decided to use the final...

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Nuts and Bolts of Quantstrat, Part III

September 20, 2014
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Nuts and Bolts of Quantstrat, Part III

This post will focus on signals in quantstrat. In comparison to indicators, signals in quantstrat are far more cut-and-dry, as … Continue reading →

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Using the Debug Option in readDICOMfile()

September 20, 2014
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Using the Debug Option in readDICOMfile()

Some recent activity in stackoverflow was brought to my attention.  Specifically, several questions were raised with reading files into R using readDICOMFile() in the oro.dicom package. The questions did...

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momentify R package

September 19, 2014
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momentify R package

I presented today an arxived paper of my postdoc at the big success Young Bayesian Conference in Vienna. The big picture of the talk is simple: there are situations in Bayesian nonparametrics...

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Yep. He made it; country voted No.

September 19, 2014
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Yep. He made it; country voted No.

Tweet Yesterday, more Scots than ever since universal suffrage was introduced cast a ballot on the matter of independence. The turnout was itself phenomenal and that implicating a series...

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Webinar September 25: Data Science with R

September 19, 2014
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A quick heads up that if you'd like to get a great introduction to doing data science with the R language, Joe Rickert will be giving a free webinar...

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What does CNN have in common with Carmen Reinhart, Kenneth Rogoff, and Richard Tol: They all made foolish, embarrassing errors that would never have happened had they been using R Markdown

September 19, 2014
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What does CNN have in common with Carmen Reinhart, Kenneth Rogoff, and Richard Tol:  They all made foolish, embarrassing errors that would never have happened had they been using R Markdown

Rachel Cunliffe shares this delight: Had the CNN team used an integrated statistical analysis and display system such as R Markdown, nobody would’ve needed to type in the numbers...

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The New Consumer Requires an Updated Market Segmentation

September 18, 2014
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The New Consumer Requires an Updated Market Segmentation

The new consumer is the old consumer with more options and fewer prohibitions. Douglas Holt calls it the postmodern market defined by differentiation: "consumer identities are being fragmented, proliferated, recombined, and...

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Pander tables inside of knitr

September 18, 2014
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Pander tables inside of knitr

Hadley Wickham opened my eyes that calling pander to generate nifty markdown tables inside of knitr requires a special chunk option, which bothersome extra step might be saved by updating pander...

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“Do You Want to Steal a Snowman?” – A Look (with R) At TorrentFreak’s Top 10 PiRated Movies List #TLAPD

September 18, 2014
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“Do You Want to Steal a Snowman?” – A Look (with R) At TorrentFreak’s Top 10 PiRated Movies List #TLAPD

We leave the Jolly Roger behind this year and turn our piRate spyglass towards the digital seas and take a look at piRated movies as seen...

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Interactive Visualizations from R using rCharts

September 18, 2014
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At useR! 2014 Ramnath Vaidyanathan gave a tutorial and a presentation on one of his...

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Comparing machine learning models in R

September 18, 2014
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Comparing machine learning models in R

by Joseph Rickert While preparing for the DataWeek R Bootcamp that I conducted this week I came across the following gem. This code, based directly on a Max Kuhn...

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Stay on track: Plotting GPS tracks with R

September 18, 2014
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Stay on track: Plotting GPS tracks with R

Many GPS devices and apps have the capability to track your current position via GPS. If you go walking, running, cycling, flying or driving, you can take a look...

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Space Invaders

September 17, 2014
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Space Invaders

I burned through all of my extra lives in a matter of minutes, and my two least-favorite words appeared on the screen: GAME OVER (Ernest Cline, Ready Player One)...

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Fun with .Rprofile and customizing R startup

Fun with .Rprofile and customizing R startup

Over the years, I've meticulously compiled–and version controlled–massive and extensive configuration files for virtually all of my most used utilities, most notably vim, tmux, and zsh. In fact, one...

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Animated choropleths to visualize mortality rates of children under 5 and gender differences using rMaps

September 17, 2014
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This post displays two animated choropleths. One for global mortality rates for children under 5 (per 1000 live births) and the second for the difference in global mortality rates...

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BCEA 2.1

September 17, 2014
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BCEA 2.1

We're about to release the new version of BCEA, which will contain some major changes.A couple of changes in the basic code that should improve the computational speed. In...

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Applications of R presentations at Dataweek

September 17, 2014
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I'm speaking at the DataWeek conference in San Francisco today. My talk follows Skylar Lyon from Accenture — I'm really looking forward to hearing how he uses Revolution R...

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Migrating Table-oriented Web Scraping Code to rvest w/XPath & CSS Selector Examples

September 17, 2014
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I was offline much of the day Tuesday and completely missed Hadley Wickham’s tweet about the new rvest package: Are you an #rstats user who misses python's...

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Bayes says “don’t worry” about Scotland’s Referendum

September 17, 2014
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Bayes says “don’t worry” about Scotland’s Referendum

Just few hours before Scots head to the polls, there is not an overwhelming advantage of the anti-independence vote. Actually, the margin is shorter than last time I looked...

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