Monthly Archives: October 2014

Size Doesn’t Matter

October 26, 2014
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Size Doesn’t Matter

An invisible red thread connects those destined to meet, regardless of time, place or circumstances. The thread may stretch or tangle, but never break (Ancient Chinese Legend) I use to play once a year with my friends to Secret Santa (in Spain we call it Amigo Invisible). As you can read in Wikipedia: Secret Santa is

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R for in-Hadoop Analytics: with Big Data Developer meetup Group

October 26, 2014
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We were honoured to have a joint event with the Big Data Developer Meetup Group where we were introduced to IBMs BigR package for in-Hadoop Analytics. Mr. Rafeal Coss and Mr. Brandon MacKenzie demonstrated the workings of BigR, the integration of R into Hadoop using IBM BigInsights. You can download the slides of this presentation by clicking here. BigR allows R users to...

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Probable Points and Credible Intervals, Part 1

October 26, 2014
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Probable Points and Credible Intervals, Part 1

After having broken the Bayesian eggs and prepared your model in your statistical kitchen the main dish is the posterior. The posterior is the posterior is the posterior, given the model and the data it contains all the information you need and anything else will be a little bit less nourishing. However, taking in the posterior in one gulp...

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Syrian Refugee Informal Settlement Animation

October 26, 2014
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Syrian Refugee Informal Settlement Animation

This is an animation of the growth in Syrian refugee informal camp settlements in Lebanon over the past several years.  You can see from the .gif that the growth was most dramatic in terms of the number of settlements in the Summer of 2013.  ...

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Combating Multicollinearity by Asking the Right Questions and Uncovering Latent Features

October 26, 2014
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Combating Multicollinearity  by Asking the Right Questions and Uncovering Latent Features

Overview. When responding to questions about brand perceptions or product feature satisfaction, consumers construct a rating  by relying on their overall satisfaction with the brand or product plus some general category knowledge of how diffi...

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Quarterback Completion Heatmap Using dplyr

October 26, 2014
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Quarterback Completion Heatmap Using dplyr

Several months ago, I found Bryan Povlinkski's (really nicely cleaned) dataset with 2013 NFL play-by-play information, based on data released by Brian Burke at Advanced Football Analytics. I decided to browse QB completion rates based on Pass Location (Left, Middle, Right), Pass Distance (Short or Deep), and Down....

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ALUES: Agricultural Land Use Evaluation System, R package

October 26, 2014
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Authors:Arnold R. Salvacion                                                                       [email protected] Analysis and Visualization using R (blog)                                          Al-Ahmadgaid B. Asaad (maintainer)[email protected] Land Use Evaluation System (ALUES) is an R package that evaluates land suitability for different crop production. The package is based on the Food and Agriculture Organization (FAO) and the International Rice Research Institute (IRRI) methodology for land evaluation. Development...

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Visualizing (generalized) linear mixed effects models with ggplot #rstats #lme4

October 26, 2014
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Visualizing (generalized) linear mixed effects models with ggplot #rstats #lme4

In the past week, colleagues of mine and me started using the lme4-package to compute multi level models. This inspired me doing two new functions for visualizing random effects (as retrieved by ranef()) and fixed effects (as retrieved by fixed()) of (generalized) linear mixed effect models. The upcoming version of my sjPlot package will contain

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Tuning Laplaces Demon III

October 26, 2014
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Tuning Laplaces Demon III

This is the third post with LaplacesDemon tuning. same problem, different algorithms. For introduction and other code see this post. The current post takes algorithms Independence Metropolis to Reflective Slice Sampler.Independence MetropolisIndependen...

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Model Segmentation with Recursive Partitioning

October 26, 2014
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Model Segmentation with Recursive Partitioning

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