March 2015

Configuring the R BatchJobs package for Torque batch queues

March 31, 2015 | 0 Comments

I was asked recently to look at some R code which performs “embarrassingly parallel” computations (the same function, multiple times, different parameters) and see whether I could modify it to run on one of our high-performance computing clusters. The machine has 63 virtual compute nodes and uses the TORQUE batch queue ...
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Modeling Count Time Series with tscount Package

March 31, 2015 | 0 Comments

The example below shows how to estimate a simple univariate Poisson time series model with the tscount package. While the model estimation is straightforward and yeilds very similar parameter estimates to the ones generated with the acp package (https://statcompute.wordpress.com/2015/03/29/autoregressive-conditional-poisson-model-i), the prediction mechanism is a bit tricky. 1) ...
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A new open source data set for anomaly detection

March 31, 2015 | 0 Comments

Yahoo Labs has just released an interesting new data set useful for research on detecting anomalies (or outliers) in time series data. There are many contexts in which anomaly detection is important. For Yahoo, the main use case is in detecting unusual traffic on Yahoo servers. The data set comprises ... [Read more...]

an example of drawing beast tree using ggtree

March 31, 2015 | 0 Comments

FigTree is designed for viewing beast output as demonstrated by their example data: BEAST output is well supported by ggtree and it's easy to reproduce such a tree view. ggtree supports parsing beast output by read.beast function. We can visualize the tree directly by using ggtree function. Since this ...
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More Airline Crashes via the Hadleyverse

March 31, 2015 | 0 Comments

I saw a fly-by #rstats mention of more airplane accident data on — of all places — LinkedIn (email) today which took me to a GitHub repo by @philjette. It seems there’s a web site (run by what seems to be a single human) that tracks plane crashes. Here’s a ... [Read more...]

Standardising Function Names in R

March 31, 2015 | 0 Comments

The renamer Package Tired of the disparate naming systems in R? Then this is the package for you. Installing the package The package is located in my drat. To install install.packages("renamer", repos="http://csgillespie.github.io/drat", type="source") or if you have drat installed drat::addRepo("csgillespie") ...
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Le Monde puzzle [#905]

March 31, 2015 | 0 Comments

A recursive programming  Le Monde mathematical puzzle: Given n tokens with 10≤n≤25, Alice and Bob play the following game: the first player draws an integer1≤m≤6 at random. This player can then take 1≤r≤min(2m,n) tokens. The next player is then free to take 1≤s≤min(2r,n-r) ...
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Student Performance Indicators

March 31, 2015 | 0 Comments

Check out my: Portfolio Site Github LinkedIn Source: http://archive.ics.uci.edu/ml/datasets/Student+Performance This project is based upon two datasets of the academic performance of Portuguese students in two different […]
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Registration Open for R/Finance 2015!

March 31, 2015 | 0 Comments

You can find registration information and agenda details (as they become available) on the conference website.  Or you can go directly to the registration page.  Note that there's an early-bird registration deadl... [Read more...]

Targeted Learning R Packages for Causal Inference and Machine Learning

March 31, 2015 | 0 Comments

by Sherri Rose Assistant Professor of Health Care Policy Harvard Medical School Targeted learning methods build machine-learning-based estimators of parameters defined as features of the probability distribution of the data, while also providing influence-curve or bootstrap-based confidence internals. The theory offers a general template for creating targeted maximum likelihood estimators ... [Read more...]

R / Finance 2015 Open for Registration

March 31, 2015 | 0 Comments

The annoucement below just went to the R-SIG-Finance list. More information is as usual at the R / Finance page. Registration for R/Finance 2015 is now open! The conference will take place on May 29 and 30, at UIC in Chicago. Building on the success of the previous conferences in 2009-2014, we expect ... [Read more...]

Another Interactive Map for the Cholera Dataset

March 31, 2015 | 0 Comments

Following my previous post, François (aka @FrancoisKeck) posted a comment mentionning another package I could use to get an interactive map, the rleafmap package. And the heatmap was here easy to include. This time, we do not use openstreetmap. The first part is still the same, to get the ... [Read more...]

Interactive pivot tables with R

March 31, 2015 | 0 Comments

I love interactive pivot tables. That is the number one reason why I keep using spreadsheet software. The ability to look at data quickly in lots of different ways, without a single line of code helps me to get an understanding of the data really fast... [Read more...]

rPithon vs. rPython

March 30, 2015 | 0 Comments

Similar to rPython, the rPithon package (http://rpithon.r-forge.r-project.org) allows users to execute Python code from R and exchange the data between Python and R. However, the underlying mechanisms between these two packages are fundamentally different. Wihle rPithon communicates with Python from R through pipes, rPython accomplishes the ...
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Improved memory usage and RJSONIO compatibility in jsonlite 0.9.15

March 30, 2015 | 0 Comments

The jsonlite package implements a robust, high performance JSON parser and generator for R, optimized for statistical data and the web. Last week version 0.9.15 appeared on CRAN which improves memory usage and compatibility with other packages. Migrating to jsonlite The upcoming release of shiny will switch from RJSONIO to jsonlite. ...
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MCMskv, Lenzerheide, Jan. 5-7, 2016

March 30, 2015 | 0 Comments

Following the highly successful [authorised opinion!, from objective sources] MCMski IV, in Chamonix last year, the BayesComp section of ISBA has decided in favour of a two-year period, which means the great item of news that next year we will meet again for MCMski V [or MCMskv for short], this ...
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