1042 search results for "Latex"

Major changes to the forecast package

August 25, 2011
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Major changes to the forecast package

The forecast package for R has undergone a major upgrade, and I’ve given it version number 3 as a result. Some of these changes were suggestions from the forecasting workshop I ran in Switzerland a couple of months ago, and some have been on the drawing board for a long time. Here are the main

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Reproducible Econometric Research

August 25, 2011
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I doubt if anyone would deny the importance of being able to reproduce one's econometric results. More importantly, other researchers should be able to reproduce our results to verify (a) that we've done what we said we did; (b) to investigate the sensitivity of our results to the various choices we made (e.g., functional form of our model, choice...

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computational difficulties [with notations]

August 25, 2011
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computational difficulties [with notations]

Here is an email I received from Umberto: I have a doubt regarding the tempered transitions method you considered in your JASA article with Celeux and Hurn. On page 961 you detail the several steps for building a proposal for a given distribution by simulating through l tempered power densities. I am slightly confused regarding

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expectation-propagation and ABC

August 23, 2011
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expectation-propagation and ABC

“It seems quite absurd to reject an EP-based approach, if the only alternative is an ABC approach based on summary statistics, which introduces a bias which seems both larger (according to our numerical examples) and more arbitrary, in the sense that in real-world applications one has little intuition and even less mathematical guidance on to

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Maiden voyage

August 23, 2011
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Maiden voyage

Who Me. I'm an associate professor of Statistics at Youngstown State University in Youngstown, Ohio, USA. I've been using R for about 7 years, Emacs about 3 years, git about 1 year, and Org-Mode for less than a year. What I want this blo...

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Bayesian analysis: Comparing algorithms Part 1?

August 22, 2011
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Bayesian analysis: Comparing algorithms Part 1?

I recently had the opportunity to engage in some Bayesian analysis at work. I was able to state the problem in terms of the lognormal distribution, and took advantage of JAGS and its integration with "R" using the R2jags package. The client was very ha...

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SIGKDD 2011 Conference — Day 1 (Graph Mining and David Blei/Topic Models)

August 22, 2011
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SIGKDD 2011 Conference — Day 1 (Graph Mining and David Blei/Topic Models)

I have been waiting for the KDD conference to come to California, and I was ecstatic to see it held in San Diego this year. AdMeld did an awesome job displaying KDD ads on the sites that I visit, sometimes multiple times per page. That’s good targeting! Mining and Learning on Graphs Workshop 2011 I had originally planned to attend the...

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Last and final on Richter’s painting

August 22, 2011
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Last and final on Richter’s painting

For a quick recap, Pierre and I supervised a team project at Ensae last year, on a statistical critique of the abstract painting 1024 Colours by painter Gerhard Richter. The four students, Clémence Bonniot, Anne Degrave, Guillaume Roussellet and Astrid Tricaud, did an outstanding job. Here is a selection of graphs and results they produced.

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Prime testing function in R

August 20, 2011
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Prime testing function in R

I was hoping to begin tinkering a bit with the multicore package in R beyond some extremely trivial examples.  Thanks to a combination of R’s dumb quirkiness (for example, being worthless on loops), my poor planning, and general bad programming, my Saturday afternoon tinkering project is ultimately worthless in fulfilling that purpose. I was really

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useR! Conference 2011 highlights

August 20, 2011
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useR! Conference 2011 highlights

I was at the useR! Conference at The University of Warwick in Coventry, UK, last week. My goal in going was to learn the latest things regarding (simple) dynamic graphics, (simple) web-based apps, parallel computing, and memory management (dealing with big data sets). I got just what I was hoping for and more. There are

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