6613 search results for "git"

CFP: 13th Australasian Data Mining Conference (AusDM 2015)

February 9, 2015
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CFP: 13th Australasian Data Mining Conference (AusDM 2015)

The 13th Australasian Data Mining Conference (AusDM 2015) Sydney, Australia, 8-9 August 2015 co-located with SIGKDD’15 URL: http://ausdm15.ausdm.org/ Join us on LinkedIn: http://www.linkedin.com/groups/AusDM-4907891 The Australasian Data Mining Conference has established itself as the premier Australasian meeting for both practitioners and … Continue reading →

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Morse Code Converter

February 8, 2015
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Morse Code Converter

A few months ago, I finally got a chance to see The Imitation Game (the new Alan Turing movie), which gave me an idea for a Sunday morning R hacking session. The movie features a bunch of scenes with bustling rooms full or workers intercepting (and documenting) encrypted radio transmissions, which are then passed along...

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Chapter 3 of Modeling data with functional programming in R is out

February 8, 2015
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Chapter 3 of Modeling data with functional programming in R is out

Chapter 3 of my book “Modeling data with functional programming in R” is available for download. This chapter describes map-vectorization …Continue reading →

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Contingency Tables with gmodels in R

February 7, 2015
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Contingency Tables with gmodels in R

Contingency tables provide a way to display the frequencies and relative frequencies of observations, which are classified according to two categorical variables. The elements of one category are displayed across the columns; the

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rfoaas 0.1.3

February 7, 2015
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A brand new version of rfoaas is now on CRAN. It shadows the 0.1.3 release of FOAAS just how an earlier 0.1.2 had done (but there was something not quite right at the server backend which we coded around with an interim release 0.1.2.1; neither one of these was ever released to CRAN). The rfoaas package provides...

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drat Tutorial: First Steps towards Lightweight R Repositories

February 7, 2015
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Now that drat is on CRAN and I got a bit of feedback (or typo corrections) in three issue tickets, I thought I could show how to quickly post such an interim version in a drat repository. Now, I obviously already have a checkout of drat. If you, dear reader, wanted to play along and create your...

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More 3D Graphics (rgl) for Classification with Local Logistic Regression and Kernel Density Estimates (from The Elements of Statistical Learning)

February 7, 2015
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More 3D Graphics (rgl) for Classification with Local Logistic Regression and Kernel Density Estimates (from The Elements of Statistical Learning)

This post builds on a previous post, but can be read and understood independently. As part of my course on statistical learning, we created 3D graphics to foster a more intuitive understanding of the various methods that are used to relax the assumption of linearity (in the predictors) in regression and classification methods. The authors

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On making a Bayesian omelet

February 7, 2015
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My colleagues Eric-Jan Wagenmakers and Jeff Rouder and I have a new manuscript in which we respond to Hoijtink, van Kooten, and Hulsker's in press manuscript Why Bayesian Psychologists Should Change the Way they Use the Bayes Factor. They suggest a method for "calibrating" Bayes factor using error rates. We show that this method is fatally flawed, but also...

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Finding the dramatic arc of novels with sentiment analysis

February 6, 2015
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Finding the dramatic arc of novels with sentiment analysis

Sentiment analysis has been widely used to infer the mood of customers in emails, tweets and other short communications. The base assumption is that the sentiment is a fixed value: the email is either angry or happy; positive or negative. But in longer writings like a novel, we naturally expect the sentiment to vary over time. Can we apply...

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Superbowl XLIX: Worst Call Ever?

February 5, 2015
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Superbowl XLIX: Worst Call Ever?

Contributed by James Hedges and Malcolm Hess. James and Malcolm are part of the 12-Week Data Science Bootcamp with Vivian Zhang in the spring of 2015.

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