2815 search results for "GIS"

A Tale of Two Frontiers

December 9, 2011
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A Tale of Two Frontiers

In a follow up to Evolving Domestic Frontier, I wanted to explore the efficient frontier including international indexes since 1980.  Life is great when your primary indexes (Barclays Aggregate and S&P 500) lie on the frontier as they did 1980...

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Stability of classification trees

December 9, 2011
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Stability of classification trees

Classification trees are known to be unstable with respect to training data. Recently I have read an article on stability of classification trees by Briand et al. (2009). They propose a quantitative similarity measure between two trees. The method is i...

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Running your R and LaTeX Infrastructure from a portable USB Drive

December 9, 2011
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Running your R and LaTeX Infrastructure from a portable USB Drive

On my road to eventually running all of my programs off an USB device I’ve gotten a little bit closer yesterday thanks to input from Duncan Murdoch and Yihui Xie. Eventually running the entire Windows OS off a USB drive would be nice (not talking about running it as a Virtual Machine, but to have … Continue reading...

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MCMC chain analysis and convergence diagnostics with coda in R

December 9, 2011
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MCMC chain analysis and convergence diagnostics with coda in R

Last week, I gave a seminar about MCMC chain analysis and convergence diagnostics with coda in R, and I thought a summary would make a nice post. As a prerequisite, we will use a few lines of code, very similar to a previous post on MCMC sampling. In the code, we create some test data…

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RNA-Seq & ChiP-Seq Data Analysis Course at EBI

December 8, 2011
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I just got this announcement from EMBL-EBI about an RNA-seq/ChIP-seq analysis hands-on course. Find the full details, schedule, and speaker list here.Title: Advanced RNA-Seq and Chip-Seq Data Analysis Course Date: May 1-4 2012 Venue: EMBL-EBI, Hinxton,...

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Statistics with R – Lots of R Examples

December 8, 2011
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Statistics with R – Lots of R Examples

“Statistics with R” is a great R graphics & stats website. It provides lots of R examples, covering many analytics topics. It is also available as a PDF document to download at the website, as well as the R codes. … Continue reading →

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A Word Cloud with Spatial Meaning

December 7, 2011
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A Word Cloud with Spatial Meaning

..Some time ago I did a word cloud for representing a Google Scholar search result. Tal Galili pointed me at a post by Drew Conway that expanded on the topic of word clouds lacking spatial meaning. In fact the spatial ordering of words in a word cloud ...

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World Since June 2008

December 6, 2011
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World Since June 2008

For a client meeting, I struggled with how best to illustrate world markets since June 2008.  I used R to produce this, but I’m still not completely satisfied. Anyone have suggestions to improve? From TimelyPortfolio What I thought was inte...

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Judging panel for Applications of R in Business contest

December 6, 2011
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Now that the final submissions are in for the Applications of R in Business contest, it's time to announce the judging panel who will select the winners for $20,000 in cash prizes from Revolution Analytics. They are: Edd Dumbill, technologist and writer for O'Reilly Media David Menninger, VP & Research Director at Ventana Research Steve Miller, technology writer and...

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My Favorite Graphs

December 5, 2011
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My Favorite Graphs

The important criterion for a graph is not simply how fast we can see a result; rather it is whether through the use of the graph we can see something that would have been harder to see otherwise or that could not have been seen at all. – William Cleveland, The Elements of Graphing Data, Related posts:

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