Bio7 Overview Video

March 6, 2015
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06.03.2015 For the upcoming EclipseCon 2015 where I present the Bio7 application I created an overview video (see below) which summarizes some of the main Bio7 functionality. This time the Eclipse Con is co-located with the FOSS4G. So many interesting things will be presented at one place. If you find the time don’t miss this

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How to shoot yourself in the foot with various statistical philosophies

March 6, 2015
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I've long been a fan of "How to shoot yourself in the foot" jokes. Having shot myself in the foot with different programming languages -- particularly with C -- I...

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Brand and Product Category Representation: Precursors to Preference Construction

March 5, 2015
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Brand and Product Category Representation: Precursors to Preference Construction

Evidently, preference is contextual, or so The Hershey's Company claims in their advertising. I agree and will not repeat the argument made in a previous post on incorporating preference...

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Supervised Classification, beyond the logistic

March 5, 2015
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Supervised Classification, beyond the logistic

In our data-science class, after discussing limitations of the logistic regression, e.g. the fact that the decision boundary line was a straight line, we’ve mentioned possible natural extensions. Let...

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Very gentle resource for speeding up R code

March 5, 2015
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Very gentle resource for speeding up R code

Nathan Uyttendaele has written a great beginner’s guide to speeding up your R code. Abstract: Most calculations performed by the average R user are unremarkable in the sense that...

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Is Time Series Clustering Meaningless? (lots of dplyr)

March 5, 2015
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A kind reader directed me in a comment on Experiments in Time Series Clustering to this paper. Clustering of Time Series Subsequences is Meaningless: Implications for Previous and...

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New R course on Coursera: Data Analysis & Statistical Inference

March 5, 2015
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New R course on Coursera: Data Analysis & Statistical Inference

This week a new session of Data Analysis and Statistical Inference, taught by Doctor Mine Çetinkaya-Rundel from Duke university, has started on Coursera. Just like with the previous runs,...

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R User Group Activity

March 5, 2015
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R User Group Activity

by Joseph Rickert R user group activity is still on the rise. The following plot of the number of R user group meetings listed on Revolution Analytics' Community Calendar...

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Rapid Non-Compartmental Analysis

March 5, 2015
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Mango Solutions releases version 1.0 of RapidNCA Chippenham, Wiltshire, UK – 5th March 2015 – Mango Solutions are pleased to announce the release of version 1.0 of RapidNCA, an...

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Part 3a: Plotting with ggplot2

March 4, 2015
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Part 3a: Plotting with ggplot2

We will start off this first section of Part 3 with a brief introduction of the plotting system ggplot2. Then, with the attention focused mainly on the syntax, we...

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Color extraction with R

March 4, 2015
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Color extraction with R

Given all the attention the internet has given to the colors of this dress, I thought it would be interesting to look at the capabilities for extracting colors in...

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haven 0.1.0

March 4, 2015
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haven 0.1.0

I’m pleased to announced that the new haven package is now available on CRAN. Haven makes it easy to read data from SAS, SPSS and Stata. Haven has the...

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ASA DataFest 2015 at UCLA

What is DataFest? DataFest is a team competition, where a team of up to 5...

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How to Speak Data Science

March 4, 2015
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How to Speak Data Science

Data Science has its own language. So, if you want to have at least a slight chance of surviving in the enterprise world of tomorrow -with its obsessive focus...

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A modular Rmarkdown workbook in action I’m now using a…

March 4, 2015
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A modular Rmarkdown workbook in action

I’m now using a…

A modular Rmarkdown workbook in action I’m now using a properly modular Rmarkdown workbook, and really quite chuffed with it! I’ve seen discussion of electronic...

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Creating an Analytics Ecosystem by integrating ModSpace and RStudio Server Professional

March 4, 2015
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By Richard Pugh – Commercial Director, (UK). As the importance of using analytics to drive decision making continues to grow at pace, so too does the need to make...

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Extracting the original data from a heatmap image

March 4, 2015
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Extracting the original data from a heatmap image

The paper Analysis of the Linux Kernel Evolution Using Code Clone Coverage analysed 136 versions of Linux (from 1.0 to 2.6.18.3) and calculated the amount of source code that...

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Supervised Classification, discriminant analysis

March 3, 2015
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Supervised Classification, discriminant analysis

Another popular technique for classification (or at least, which used to be popular) is the (linear) discriminant analysis, introduced by Ronald Fisher in 1936. Consider the same dataset as...

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JASP

March 3, 2015
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JASP is an interesting project. It is based on R with additional facilities and functions such as automatic table generation. There appears to be an R package that provide...

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Update on The Pre-FOMC Announcement Drift

March 3, 2015
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Update on The Pre-FOMC Announcement Drift

In the February 2015 edition of The Journal of Finance, a well known academic paper, “The Pre-FOMC Announcement Drift”, was finally published, almost 4 years after the working paper...

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A Linear Congruential Generator (LCG) in R

March 3, 2015
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A Linear Congruential Generator (LCG) in R

In my simulation classes, we talk about how to generate random numbers. One of the techniques we talk about is the Linear Congruential Generator (LCG). Starting with a seed,...

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Plotly Graphs with Domino’s New R Notebook

March 3, 2015
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Plotly Graphs with Domino’s New R Notebook

by Matt Sundquist co-founder of Plotly Domino's new R Notebook and Plotly's R API let you code, make interactive R and ggplot2 graphs, and collaborate entirely online. Here is...

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Google Summer of Code 2015

March 3, 2015
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Google Summer of Code 2015

The R Project has once again been selected as a mentoring organization for this year's Google Summer of Code (GSoC).  If you're not familiar with...

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Mapping Paris bikes stands

March 3, 2015
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Mapping Paris bikes stands

A Sharp Sight Labs reader (and now student), Jason P. recently started learning data science. He has a background in data analysis (primarily with Excel and related tools in...

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Next Kölner R User Meeting: Friday, 6 March 2014

March 3, 2015
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Next Kölner R User Meeting: Friday, 6 March 2014

The next Cologne R user group meeting is scheduled for this Friday, 6 March 2014 and we have an exciting agenda with two talks, followed...

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Supervised Classification, Logistic and Multinomial

March 2, 2015
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Supervised Classification, Logistic and Multinomial

We will start, in our Data Science course,  to discuss classification techniques (in the context of supervised models). Consider the following case, with 10 points, and two classes (red...

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scheduleR receives big update

March 2, 2015
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scheduleR receives big update

For the newcomers; scheduleR is a framework to deploy/schedule R tasks, reports and Shiny apps. The tool has an integrated logging and notification system to ease the maintenance...

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ComputerWorld’s R for Beginners Hands-On Guide

March 2, 2015
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Computerworld's Sharon Machlis has done a great service for the R community — and R especially novices — by creating the on-line Beginner's Guide to R. You can read...

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At the APS Observer: a profile of JASP

March 2, 2015
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The APS Observer has just published a profile of JASP, a graphical user interface designed to make statistics easier. It includes Bayesian procedures by means of the R and...

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