1700 search results for "Tutorial"

Part 3: Random Forests and Model Selection Considerations

December 10, 2013
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Part 3:  Random Forests and Model Selection Considerations

I want to wrap this series up on the breast cancer data set and move on to other topics.  Here I will include the random forest technique and evaluate all three modeling techniques together, including the conditional inference tree and bootstrap a...

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In case you missed it: November 2013 Roundup

December 10, 2013
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In case you missed them, here are some articles from October of particular interest to R users: A recap of the Strata Hadoop World conference, including presentations from Monsanto and eHarmony on their use of R. How to rank and chart the most frequent hashtags of Twitter users with R. A replay of the What’s new in Revolution R...

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Build your own Twitter Archive and Analyzing Infrastructure with MongoDB, Java and R [Part 2] [Update]

December 9, 2013
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Build your own Twitter Archive and Analyzing Infrastructure with MongoDB, Java and R [Part 2] [Update]

Hello everybody, in my first tutorial I described how you can build your own MongoDB and use a JAVA program to mine Twitter either via the search function and a loop or via the Streaming API. But till now you just have your tweets stores in a Database and we couldn´t get any insight in our …

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Introduction to Spatial Data and ggplot2

December 9, 2013
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Introduction to Spatial Data and ggplot2

For those starting out with spatial data in R, Robin Lo

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analyze the program for international student assessment (pisa) with r and monetdb

December 9, 2013
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the authoritative source for evaluating educational achievement across nations, the program(me) for international student assessment ranks the math, science, and reading skills of 15-year-olds in more than sixty countries.  coordinated by the orga...

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The forestplot of dreams

December 8, 2013
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The forestplot of dreams

Displaying large regression models without overwhelming the reader can be challenging. I believe that forestplots are amazingly well suited for this. The plot gives a quick understanding of the estimates position in comparison to other estimates, while also showcasing the uncertainty. This project started with some minor tweaks to prof. Thomas Lumleys forestplot and ended up in a...

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My first… plot (.ly): beautiful plots with Plotly

December 5, 2013
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My first… plot (.ly): beautiful plots with Plotly

Dear R-enthusiastic, I discovered Plotly some days ago, and I was fascinated by it. What is Plotly? Plotly is a service for creating and sharing data visualizations that also offers statistical analysis tools plus a robust API, the ability to … Continue reading →

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My current R projects at the end of 2013

December 4, 2013
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I have been meaning to write a long post explaining each of the major R projects I am currently working on, but I can't seem to find the time to get to them. Instead, I give you a short summary of a few R projects/experiments/ideas I am kicking around....

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2013 was a good year for R User Group Meetings

December 4, 2013
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2013 was a good year for R User Group Meetings

by Joseph Rickert R user groups are thriving. By our count of events listed on Revolution Analytics' Community Calendar, there were about 441 face-to-face R meetups worldwide in 2013; up 41% from 312 in 2012. The plot below indicates what the activity looks like on a monthly basis. (Download the data and R code behind this chart here.) My...

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a public list of R freelancers

December 4, 2013
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tl,dr: If you want to be contacted for freelance R work, edit this list https://github.com/isomorphisms/hire-an-r-programmer/blob/master/README.md.   Background/Problem: I was looking for a list of R-programming freelancers and realised there is no such list. Other than famous people and people I already talk to, I don’t know even a small fraction of the R community—let alone people who do R...

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