Publications by Larry D'Agostino
R again in Google Summer of Code
I’m a big fan of the Google Summer of Code. It brings great projects together with a learning opportunity for students. Once again the R Project was selected to be part of the Google Summer of Code in 2011. Some other notable mathematical and statistics projects with R include Shogun Machine Learning, SymPy, Gambit, Computat...
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Open Source replacements for Operations Research and Analytics Software
I was reading an article from Datamation on 70 Open Source Replacements for Small Business when I noticed a glaring omission. Where are the software applications for Operations Research and Analytics? So here is my best addendum to this article that should complete what small business should know about Open Source analytics produc...
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R Tutorial: Add confidence intervals to dotchart
Recently I was working on a data visualization project. I wanted to visualize summary statistics by category of the data. Specifically I wanted to see a simple dispersion of data with confidence intervals for each category of data. R is my tool of choice for data visualization. My audience was a general audience so I didn’t w...
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Visualizing categorical data in R
I came across an interesting SAS macro that was used for visualizing log odds relationships of data. This type of chart is helpful for visualizing the relationship between a binary dependent variable and a continuous independent variable. I don’t use SAS on a daily basis as I prefer to use R. So I got to thinking that I could ...
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R graphic used for Facebook IPO
Apparently former Facebook intern, Paul Butler, graphic of the Facebook social network graph is being used for Facebook’s IPO. The social network graphic is featured on Page 7 of the IPO filing. His graphic was featured on mashable and R-bloggers not too long ago. The graphic is of Facebook connections between city centers around the wo...
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National Registry of Exonerations charts with R
According to recent news (dallasnews.com) there is a new release of a public national database for wrongful convictions. There are plenty of details in the public list including Age, Race, and how the conviction was overturned. According to the database it seems that most of the convictions were overturned due to DNA evidence.I th...
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Popularity of R continues
No doubt those that read my blog know that the tools I use to do my Industrial Engineering and Operations Research work heavily rely on the open source side of software. That is why I try to support as many open source projects such as COIN-OR, GLPK, and OpenOpt. One tool that I love to perform Applied Math and Statistics is the s...
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Google Statistician uses R and other programming tools
A great interview on the Simply Statistics blog with Google’s Nick Chamandy, Phd in Statistics. Explains that he mainly uses R among other tools to perform his work at Google. Also of note is the active data science community within Google that uses R as well as some other interesting tools. Note that they use a lot of data at...
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Introducing the Shiny App DThiring
Well it has a been a long time since I have written anything on this blog. I am long overdue. I’ve been terribly busy learning new things and getting on with life. One of the things I have learned is building R applications using Shiny developed by RStudio. The folks at RStudio have also created a way to deploy Shiny apps u...
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Interesting high contrast plots in R
I was inspired by this blog post and thought I could do the same thing in R. Well I posted the code in Google+Here are my results. Not bad. Related To leave a comment for the author, please follow the link and comment on their blog: Maximize Productivity with Industrial Engineer and Operations Research Tools. R-bloggers.com of...
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