Posts Tagged ‘ R ’

The Geometry of Classifiers

December 19, 2014
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The Geometry of Classifiers

As John mentioned in his last post, we have been quite interested in the recent study by Fernandez-Delgado, et.al., “Do we Need Hundreds of Classifiers to Solve Real World Classification Problems?” (the “DWN study” for short), which evaluated 179 popular implementations of common classification algorithms over 120 or so data sets, mostly from the UCI … Continue reading The Geometry of Classifiers → Related posts: A comment on preparing data…

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New R package for electricity forecasting

December 17, 2014
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New R package for electricity forecasting

Shu Fan and I have developed a model for electricity demand forecasting that is now widely used in Australia for long-term forecasting of peak electricity demand. It has become known as the “Monash Electricity Forecasting Model”. We have decided to release an R package that implements our model so that other people can easily use it. […]

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Notes from the Kölner R meeting, 12 December 2014

December 16, 2014
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Notes from the Kölner R meeting, 12 December 2014

Last week's Cologne R user group meeting was the best attended so far, and it was a remarkable event - I believe not a single line of R code was shown. Still, it was an R user group meeting with two excellent talks, and you will understand shortly why ...

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A time series classification contest

December 14, 2014
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A time series classification contest

Amongst today’s email was one from someone running a private competition to classify time series. Here are the essential details. The data are measurements from a medical diagnostic machine which takes 1 measurement every second, and after 32–1000 seconds, the time series must be classified into one of two classes. Some pre-classified training data is […]

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Recordings of RStudio Webinar Series on Essential Tools for Data Science with R

December 9, 2014
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Recordings of RStudio Webinar Series on Essential Tools for Data Science with R

by Yanchang Zhao, RDataMining.com RStudio recently ran a series of live webinars on Essential Tools for Data Science with R, but it is inconvenient for people from other time zones to attend. Fortunately, the recordings have been made available online, … Continue reading →

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Next Kölner R User Meeting: Friday, 12 December 2014

December 9, 2014
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Next Kölner R User Meeting: Friday, 12 December 2014

The next Cologne R user group meeting is scheduled for this Friday, 12 December 2014.We have an exciting agenda with two talks on Julia and Dynamic Linear Models:Introduction to Julia for R UsersHans Werner BorchersJulia is a high-performance dynamic p...

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Am I a data scientist?

December 9, 2014
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Am I a data scientist?

Last night I gave a very short talk (less than 5 minutes) at the Melbourne Analytics Charity Christmas Gala, a combined event of the Statistical Society of Australia, Data Science Melbourne, Big Data Analytics and Melbourne Users of R Network. This is (roughly) what I said. Statisticians seem to go through regular periods of existential crisis as […]

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amazonish thanks (& repeated warning)

December 8, 2014
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amazonish thanks (& repeated warning)

As in previous years, at about this time, I want to (re)warn unaware ‘Og readers that all links to Amazon.com and more rarely to Amazon.fr found on this blog are actually susceptible to earn me an advertising percentage if a purchase is made by the reader in the 24 hours following the entry on Amazon […]

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Importing Illumina BeadArray data into R

December 8, 2014
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Importing Illumina BeadArray data into R

A colleague needed some help getting Illumina BeadArray gene expression data loaded into R for data analysis with limma. Hopefully whoever ran your arrays can export the data as text files formatted as described in the code below. If so, you can import...

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Risk as a “Survival Variable”

December 8, 2014
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Risk as a “Survival Variable”

I come across a lot of strategies on the blogosphere some are interesting some are a complete waste of time but most share a common feature: people developing those strategies do their homework in term of analyzing the return but much less attention is paid to the risk side its random nature. I’ve seen comment like “a […]

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