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Visualizing Hadley Wickham #rstats
I like the visual appeal of commits by users over time at Github. For example, we can see Hadley Wickham is committed. But you already knew that. Nice to see a calender heat map being used effectively.
Now if we could only do that to CRAN (?) commits. Come on , Brian- you are not too old for this.
Interviews and Reviews: More R #rstats
I got interviewed on moving on from Excel to R in Human Resources (HR) here at http://www.hrtecheurope.com/blog/?p=5345
“There is a lot of data out there and it’s stored in different formats. Spreadsheets have their uses but they’re limited in what they can do. The spreadsheet is bad when getting over 5000 or 10000 rows – it slows down. It’s just not designed for that. It was designed for much higher levels of interaction.
In the business world we really don’t need to know every row of data, we need to summarise it, we need to visualise it and put it into a powerpoint to show to colleagues or clients.”
And a more recent interview with my fellow IIML mate, and editor at Analytics India Magazine
http://analyticsindiamag.com/interview-ajay-ohri-author-r-for-business-analytics/
AIM: Which R packages do you use the most and which ones are your favorites?
AO: I use R Commander and Rattle a lot, and I use the dependent packages. I use car for regression, and forecast for time series, and many packages for specific graphs. I have not mastered ggplot though but I do use it sometimes. Overall I am waiting for Hadley Wickham to come up with an updated book to his ecosystem of packages as they are very formidable, completely comprehensive and easy to use in my opinion, so much I can get by the occasional copy and paste code.
A surprising review at R- Bloggers.com /Intelligent Trading
http://intelligenttradingtech.blogspot.in/2012/10/book-review-r-for-business-analytics.html
The good news is that many of the large companies do not view R as a threat, but as a beneficial tool to assist their own software capabilities.
After assisting and helping R users navigate through the dense forest of various GUI interface choices (in order to get R up and running), Mr. Ohri continues to handhold users through step by step approaches (with detailed screen captures) to run R from various simple to more advanced platforms (e.g. CLOUD, EC2) in order to gather, explore, and process data, with detailed illustrations on how to use R’s powerful graphing capabilities on the back-end.
Do you want to write a review too? You can visit the site here
http://www.springer.com/statistics/book/978-1-4614-4342-1
Related articles
- What does R do? Bring people together, of course! (r-bloggers.com)
- Book Review: R for Business Analytics, A Ohri (r-bloggers.com)
R Studio and Training
I really like the design, course structure and Hadley Wickham (in no particular order) as part of R Studio’ training suite which may be new, but is much better and open. Again I think Oracle’s training is awesome for online features , but some body needs to step up and create a credible R certification here. More power to R 
Check it out-
http://www.rstudio.com/training/
httR by Hadley #rstats
The awesome Hadley Wickham has just released the next version of httr package. Prof Hadley is currently on leave from Rice Univ and working with the tremendous geeks at R Studio . New things in the httr package-
http://blog.rstudio.org/2012/10/14/httr-0-2/
httr, a package designed to make it easy to work with web APIs. Httr is a wrapper around RCurl, and provides:
- functions for the most important http verbs:
GET,HEAD,PATCH,PUT,DELETEandPOST. - support for OAuth 1.0 and 2.0. Use
oauth1.0_tokenandoauth2.0_tokento get user tokens, andsign_oauth1.0andsign_oauth2.0to sign requests. The demos directory has six demos of using OAuth: three for 1.0 (linkedin, twitter and vimeo) and three for 2.0 (facebook, github, google).
I especially like the OAuth functionality as I occasionaly got flummoxed with existing R OAuth packages , and this should hopefully lead to awesome new social media analytics posts by the larger R blogger community. Also given the fact that unauthenticated API requests to Twitter are greatly expanded by OAuth authenticated requests- (see https://dev.twitter.com/docs/rate-limiting )
- Unauthenticated calls are permitted 150 requests per hour. Unauthenticated calls are measured against the public facing IP of the server or device making the request.
- OAuth calls are permitted 350 requests per hour and are measured against the oauth_token used in the request.
some creative use cases should see an incredible amount of cross social media analysis (not just one social media channel ) at a time.
R for Social Media Analytics ? Watch this space..
Related articles
- New version of httr: 0.2 (rstudio.org)
Who made Who in #Rstats
While Bob M, my old mentor and fellow TN man maintains the website http://r4stats.com/ how popular R is across various forums, I am interested in who within R community of 3 million (give or take a few) is contributing more. I am very sure by 2014, we can have a new fork of R called Hadley R, in which all packages would be made by Hadley Wickham and you wont need anything else.
But jokes apart, since I didnt have the time to
1) scrape CRAN for all package authors
2) scrape for lines of code across all packages
3) allocate lines of code (itself a dubious software productivity metric) to various authors of R packages-
OR
1) scraping the entire and 2011′s R help list
2) determine who is the most frequent r question and answer user (ala SAS-L’s annual MVP and rookie of the year awards)
I did the following to atleast who is talking about R across easily scrapable Q and A websites
Stack Overflow still rules over all.
http://stackoverflow.com/tags/r/topusers shows the statistics on who made whom in R on Stack Overflow
All in all, initial ardour seems to have slowed for #Rstats on Stack Overflow ? or is it just summer?
No the answer- credit to Rob J Hyndman is most(?) activity is shifting to Stats Exchange
http://stats.stackexchange.com/tags/r/topusers
You could also paste this in Notepad and some graphs on Average Score / Answer or even make a social network graph if you had the time.
Do NOT (Go/Bi) search for Stack Overflow API or web scraping stack overflow- it gives you all the answers on the website but 0 answers on how to scrape these websites.
I have added a new website called Meta Optimize to this list based on Tal G’s interview of Joseph Turian, at http://www.r-statistics.com/2010/07/statistical-analysis-qa-website-did-stackoverflow-just-lose-it-to-metaoptimize-and-is-it-good-or-bad/
http://metaoptimize.com/qa/tags/r/?sort=hottest
There are only 17 questions tagged R but it seems a lot of views is being generated.
I also decided to add views from Quora since it is Q and A site (and one which I really like)
http://www.quora.com/R-software
Again very few questions but lot many followers
RapidMiner launches extensions marketplace
For some time now, I had been hoping for a place where new package or algorithm developers get at least a fraction of the money that iPad or iPhone application developers get. Rapid Miner has taken the lead in establishing a marketplace for extensions. Is there going to be paid extensions as well- I hope so!!
This probably makes it the first “app” marketplace in open source and the second app marketplace in analytics after salesforce.com
It is hard work to think of new algols, and some of them can really be usefull.
Can we hope for #rstats marketplace where people downloading say ggplot3.0 atleast get a prompt to donate 99 cents per download to Hadley Wickham’s Amazon wishlist. http://www.amazon.com/gp/registry/1Y65N3VFA613B
Do you think it is okay to pay 99 cents per iTunes song, but not pay a cent for open source software.
I dont know- but I am just a capitalist born in a country that was socialist for the first 13 years of my life. Congratulations once again to Rapid Miner for innovating and leading the way.
http://rapid-i.com/component/option,com_myblog/show,Rapid-I-Marketplace-Launched.html/Itemid,172
| RapidMiner, Marketplace, Extensions | 30 May 2011 |
| Rapid-I Marketplace Launched by Simon Fischer |
Over the years, many of you have been developing new RapidMiner Extensions dedicated to a broad set of topics. Whereas these extensions are easy to install in RapidMiner – just download and place them in the plugins folder – the hard part is to find them in the vastness that is the Internet. Extensions made by ourselves at Rapid-I, on the other hand, are distributed by the update server making them searchable and installable directly inside RapidMiner.
We thought that this was a bit unfair, so we decieded to open up the update server to the public, and not only this, we even gave it a new look and name. The Rapid-I Marketplace is available in beta mode at http://rapidupdate.de:8180/ . You can use the Web interface to browse, comment, and rate the extensions, and you can use the update functionality in RapidMiner by going to the preferences and entering http://rapidupdate.de:8180/UpdateServer/ as the update server URL. (Once the beta test is complete, we will change the port back to 80 so we won’t have any firewall problems.)
As an Extension developer, just register with the Marketplace and drop me an email (fischer at rapid-i dot com) so I can give you permissions to upload your own extension. Upload is simple provided you use the standard RapidMiner Extension build process and will boost visibility of your extension.
Looking forward to see many new extensions there soon!
Disclaimer- Decisionstats is a partner of Rapid Miner. I have been liking the software for a long long time, and recently agreed to partner with them just like I did with KXEN some years back, and with Predictive AnalyticsConference, and Aster Data until last year.
I still think Rapid Miner is a very very good software,and a globally created software after SAP.
Here is the actual marketplace
http://rapidupdate.de:8180/UpdateServer/faces/index.xhtml
The Rapid-I Marketplace will soon replace the RapidMiner update server. Using this marketplace, you can share your RapidMiner extensions and make them available for download by the community of RapidMiner users. Currently, we are beta testing this server. If you want to use this server in RapidMiner, you must go to the preferences and enter http://rapidupdate.de:8180/UpdateServer for the update url. After the beta test, we will change the port back to 80, which is currently occupied by the old update server. You can test the marketplace as a user (downloading extensions) and as an Extension developer. If you want to publish your extension here, please let us know via the contact form.
| 5/30/11 12:39 PM | User burgetrm has uploaded version 1.1.0 of Imageprocessing. |
| 5/30/11 12:34 PM | User burgetrm has uploaded version 1.0.0 of Imageprocessing. |
| 5/30/11 11:55 AM | User burgetrm has created the new product Imageprocessing. |
| 5/30/11 11:12 AM | User Rapid-I has uploaded version 5.0.7 of RapidMiner. |
| 5/30/11 11:12 AM | User Rapid-I has uploaded version 5.0.2 of RapidMiner. |
Related articles
- Open Source replacements for Operaitons Research and Analytics Software (r-bloggers.com)
- RapidMiner Community gets exciting! (decisionstats.wordpress.com)
Topic Models in R- search documents for similarity by frequency
Image via Wikipedia
From the marvelous lovely Journal of Statistical Software, ignored by mainstream corporatia, but beloved to academia. here is one more interesting and very timely paper.
Can be used to grade stdudents homework, catch terrorists as in plagiarists , search engine spam linkers. Enjoy!
