152 search results for "iris"

Highlight cells in markdown tables

April 10, 2013
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Highlight cells in markdown tables

Although I have always wanted to add such feature to pander, a recent question on SO urged me to create some helper functions so that users could easily highlight some rows, columns or even just a few cells in a table and export the result to markdown,...

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Massive online data stream mining with R

Massive online data stream mining with R

A few weeks ago, the stream package has been released on CRAN. It allows to do real time analytics on data streams. This can be very usefull if you are working with large datasets which are already hard to put in RAM completely, let alone to build some statistical model on it without getting into RAM problems. Most of...

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Review of Mathematica 9 and R-link

March 18, 2013
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VIDEO TRANSCRIPT: Hello, this is Matt Asher from StatisticsBlog.com. I’m going to be reviewing Mathematica 9, from Wolfram Research. In particular, I’ll be focusing on using it with R and to do Monte Carlo simulations and other statistical work. You can find a full transcript of this video at my blog, including the source code

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Happy St Patrick’s Day

March 17, 2013
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Happy St Patrick’s Day

I love Saint Patrick’s Day for, at least, two reasons. The first one is that, on March 17th, you can play out loud The Pogues, the second one is that it’s the only day in the year when I really enjoy getting a Guiness in a pub. And Guiness is important in statistical science (I did mention a couple...

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Visualizing neural networks from the nnet package

March 4, 2013
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Visualizing neural networks from the nnet package

Neural networks have received a lot of attention for their abilities to ‘learn’ relationships among variables. They represent an innovative technique for model fitting that doesn’t rely on conventional assumptions necessary for standard models and they can also quite effectively handle multivariate response data. A neural network model is very similar to a non-linear regression

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Saving R Objects in Oracle Database using Oracle R Enterprise 1.3 Datastore

February 18, 2013
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Saving R Objects in Oracle Database using Oracle R Enterprise 1.3 Datastore

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A Review of the R Graphics Cookbook

February 11, 2013
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A Review of the R Graphics Cookbook

A common criticism of R, especially from data scientists who are new to R but proficient in multiple programming languages, is that R is “quirky” and annoying because there is almost always more than one way to do simple things. I usually counter that they are trying to say that R is “flexible” and “rich”, but by the time...

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2011 Census Open Atlas Project

February 5, 2013
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2011 Census Open Atlas Project

This month has seen the release of the 2011  census data for England and Wales at Output Area Level. This offers the possibility to map various attributes about people and places for very small geographic areas. Output Areas represent the most detailed geography for which Census data are released and are the building blocks for

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2011 Census Open Atlas Project

February 5, 2013
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2011 Census Open Atlas Project

This month has seen the release of the 2011  census data for England and Wales at Output Area Level. This offers the possibility to map various attributes about people and places for very small geographic areas. Output Areas represent the most detailed geography for which Census data are released and are the building blocks for many popular products...

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Generating Labels for Supervised Text Classification using CAT and R

February 4, 2013
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Generating Labels for Supervised Text Classification using CAT and R

The explosion in the availability of text has opened new opportunities to exploit text as data for research. As Justin Grimmer and Brandon Stewart discuss in the above paper, there are a number of approaches to reducing human text to … Continue reading →

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