336 search results for "evaluation"

Normal distribution functions

February 25, 2013
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Normal distribution functions

Ah, the Central Limit Theorem.  The basis of much of statistical inference and how we get those 95% confidence intervals.  It's just so beautiful!  Lately, I have found myself looking up the normal distribution functions in R.  They...

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Ten Things the Emacs Social Science Starter Kit gives you

February 24, 2013
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I recently made some updates to the Emacs Social Science Starter Kit. I maintain the SSSK for my own convenience, but other people have found it useful as well. By now there are a lot of little bits and pieces in the kit, so I thought it might be usefu...

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CHANCE: special issue on George Casella’s books

February 9, 2013
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CHANCE: special issue on George Casella’s books

The special issue of CHANCE on George Casella’s books has now appeared and it contains both my earlier post on George passing away and  reviews of several of his books, as follows: Andrew Gelman on Introducing Monte Carlo Methods with R Bill Strawderman on Statistical Inference Jean-Louis Foulley on Variance Components Larry Wasserman on Theory

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R User Group Meetings in Switzerland and London

February 7, 2013
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Mango Solutions is pleased to confirm details of two forthcoming  R User Group Meetings:  BaselR Date:                                     21st Feb 2013 Venue:                                 transBARent, Viaduktsrasse 3, CH 4051 Basel, Switzerland Time:                                     6.30 pm – 9.30pm Presentations:                  Kinetic evaluations of environmental metabolism data for the agrochemical industry using R – Johannes Ranke                   Estimating Switzerland’s quarterly GDP in R-...

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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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Disruptive Data Science – Transforming Your Company into a Data Science-Driven Enterprise

January 29, 2013
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Disruptive Data Science – Transforming Your Company into a Data Science-Driven Enterprise

Big Data is the latest technology wave impacting C-Level executives across all areas of business, but amid the hype, there remains confusion about what it all means. The name emphasizes the exponential growth of data volumes worldwide (collectively, 5 Exabytes/ day in the latest estimate I saw from IDC), but more nuanced definitions of Big Data incorporate the following...

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Breaking the rules with spatial correlation

January 7, 2013
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Breaking the rules with spatial correlation

Students in any basic statistics class are taught linear regression, which is one of the simplest forms of a statistical model. The basic idea is that a ‘response’ variable can be mathematically related to one or any number of ‘explanatory’ variables through a linear equation and a normally distributed error term. With any statistical tool,

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Infinite generators in R

January 5, 2013
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Infinite generators in R

This is first in a series of posts about creating simulations in R. As a foundational discussion, I first look …Continue reading »

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Twitter Roundup, January 4 2013

January 4, 2013
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I've said it before: Twitter makes me a lazy blogger. Lots of stuff came across my radar this week that didn't make it into a full blog post. Here's a quick recap:PLOS Computational Biology: Chapter 1: Biomedical Knowledge IntegrationAssuring the quali...

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R code and data for book “R and Data Mining: Examples and Case Studies”

January 2, 2013
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R code and data for book “R and Data Mining: Examples and Case Studies”

R code and data for book “R and Data Mining: Examples and Case Studies” are now available at http://www.rdatamining.com/books/rdm/code. An online PDF version of the book (the first 11  chapters only) can also be downloaded at http://www.rdatamining.com/docs. Below are its … Continue reading →

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