Monthly Archives: October 2013

Argentan half-marathon [split times]

October 7, 2013
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Argentan half-marathon [split times]

Filed under: R, Running Tagged: Argentan, background, half-marathon, Normandy, race, road races, running, splits

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The look of verifying data

October 7, 2013
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The look of verifying data

Get data that fit before you fit data. Why verify? Garbage in, garbage out. How to verify The example data used here is daily (adjusted) prices of stocks.  By some magic that I’m yet to fathom, market data can be wondrously wrong even without the benefit of the possibility of transcription errors.  It doesn’t seem … Continue reading →

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Presentations of the fifth Torino R net meeting are online

October 7, 2013
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Presentations of the fifth Torino R net meeting are online

Presentations of the fifth Torino R net meeting are now available on line, section Downloads. Thank you to all who attended the meeting on Thursday 11th April and special thanks to presenters. … Continue reading →

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analyze the panel study of income dynamics (psid) with r

October 7, 2013
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the panel study of income dynamics (psid) is a one-trick pony.  better than anything else out there, this survey allows you to answer the question, "where are they now?"  after tracking the same nationally-representative cohort of americans (...

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Parallel Tempering in R with Rmpi

October 6, 2013
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Parallel Tempering in R with Rmpi

My office computer recently got a really nice upgrade and now I have 8 cores on my desktop to play with. I also at the same time received some code for a Gibbs sampler written in R from my adviser. I wanted to try a metropolis-coupled markov chain monte carlo, , algorithm on it to The post Parallel Tempering...

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Sixth Torino R net meeting and free Sweave Course

October 6, 2013
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Sixth Torino R net meeting and free Sweave Course

On 21 November 2013 – 14:00 there will be a free Sweave course and starting at 16:30 there will be the Sixth Torino R net meeting. Events will take place at Campus Luigi Einaudi, Università degli Studi di Torino. Please visit events‘ page for details and if … Continue reading →

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Presentations of the fifth Torino R net meeting – 11 Apr 2013

October 6, 2013
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Presentations of the fifth Torino R net meeting – 11 Apr 2013

welcome and presentation (download 0,1MB), Torino R net organisers; Winning with R (and friends) – How data analysts affect the standings in sports championships (download 0,7MB), Massimilano Marchi, Regione Emilia-Romagna; Predictive analytics to manage dispatchment of intermittent energy sources: R … Continue reading →

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Post 2: Generating fake data

October 6, 2013
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Post 2: Generating fake data

In order to check that an estimation algorithm is working properly, it is useful to see if the algorithm can recover the true parameter values in one or more simulated "test" data sets. This post explains how to build such … Continue reading →

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Topic Modeling in R

October 6, 2013
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Topic Modeling  in R

As a part of Twitter Data Analysis, So far I have completed Movie review using R & Document Classification using R. Today we will be dealing with discovering topics in Tweets, i.e. to mine the tweets data to discover underlying topics– approach known as Topic Modeling.What is Topic Modeling?A statistical approach for discovering “abstracts/topics” from a collection of text...

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Influence Analysis for Repeated Measures Data

October 6, 2013
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Influence Analysis for Repeated Measures Data

I am trying exercise 59.8 (page 5057) of the SAS/STAT Users Guide 12.3 in R. The interesting thing is that influence is investigated on subject level rather than individual level. The diagnostics in nlme does not do leave-subject-out, at least, not tha...

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