Monthly Archives: September 2011

Gamified

September 26, 2011
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Gamified

Barry Rowlingson gave an interesting talk at UseR 2011, “Why R-help must die!” He suggested the Q-and-A type sites Stack Overflow (on programming) and Cross Validated (on statistics), both part of Stack Exchange. An interesting feature of these sites is that, in addition to voting up and down on the questions and answers, one accrues

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Visualizing Sampling Distributions

September 25, 2011
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Visualizing Sampling Distributions

Teacher: “How variable is your estimate of the mean?” Student: “Uhhh, it’s not. I took a sample and calculated the sample mean. I only have one number.” Teacher: “Yes, but what is the standard deviation of sample means?” Student: “What do you mean means, I only have the one friggin number.” Statisticians have a habit

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Accessing and plotting World Bank data with R

September 25, 2011
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Accessing and plotting World Bank data with R

Over the past couple of days I played around with the data sets of the World Bank, and I have to admit that I am blown away by it. It is amazing, to see what is available on their web site. It is worth visiting their Data Visualisation Tools page. It i...

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rrdf 1.5: Accessing SMW SPARQL end points behind LDAP authentication

September 25, 2011
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rrdf 1.5: Accessing SMW SPARQL end points behind LDAP authentication

We are using a Semantic MediaWiki (SMW) for the Gold Compound selection task by the ToxBank in the SEURAT-1 cluster, funded by Colipa and the EC. I do stress that despite being funded by Colipa, they have no control over my research; they just co-...

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Arc Diagram and spatiotemporal data mining visualization

September 23, 2011
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Arc Diagram and spatiotemporal data mining visualization

I won't spend too much time discussing this fascinating topic other than to say it relates very much to prior discussions about pattern discovery via visual data mining (see lexical dispersion plots for example).  I happened across an interesting ...

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Nice Species Distribution Maps with GBIF-Data in R

September 23, 2011
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Nice Species Distribution Maps with GBIF-Data in R

Here's an example of how to easily produce real nice distribution maps from GBIF-data in R with package maps... Read more »

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Data Visualization doesn’t need to be biased

September 23, 2011
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Data Visualization doesn’t need to be biased

At the FlowingData blog, data visualization commentator and Visualize This author Nathan Yau lists 5 misconceptions about visualization: Software does everything (Nathan notes "Personally, I use a lot of R and have a lot of fun in Illustrator", but uses a lot of other tools as well.) Visualization is for making data flashy The more information in a single...

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Kaggle on TV

September 22, 2011
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It is good to see forecasting algorithms getting some mainstream exposure on ABC Catalyst.

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craps 0.1

September 22, 2011
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craps 0.1

The following script simulates a craps game in R any number of iterations with any starting amount of cash and any maximum odds and running until the user is out of cash.  It assumes a specific betting strategy as explained … Continue reading →

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Facebook page about the Graph Gallery

September 22, 2011
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Facebook page about the Graph Gallery

I've just created a facebook page about the R Graph Gallery I hope this will improve the experience of the website by making it more social, for example, I anticipate that people will share their own graphs by sending a picture on the facebook ...

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