Wednesday, February 27, 2013

Handling large number of data files

What if you have 100s of data files to be used for a single project? Isn't it annoying to read each data file individually in your workspace?

Here is use of native functions to handle the problem:

Tuesday, February 26, 2013

Useful R packages for data scientists

Free e-book: Introduction to Data Science

The book by Jeffrey Stanton provides non-technical readers with a gentle introduction to essential concepts and activities of data science. For more technical readers, the book provides explanations and code for a range of interesting applications using R. Download at:

Sunday, February 24, 2013

Calculating large correlation matrices in R

Problem allocating large correlation matrices, specially for gene expression data, in R? Have a look at:

Halmos Photograph Collection

Well-known mathematical researcher, educator, and expositor Paul R. Halmos (1916-2006) enjoyed snapping photographs of mathematicians he met around the world and at his various home campuses in the U.S. In 2011, 342 of Halmos’ photos were digitized by the Archives of American Mathematics, Dolph Briscoe Center for American History, University of Texas, Austin, under the direction of Archivist Carol Mead with a grant from the History of Mathematics Special Interest Group of the Mathematical Association of America (HOM SIGMAA).

Mathematical Association of America presents a weekly-increasing subset of the 342 photos by inveterate photographer Halmos:

Tuesday, February 19, 2013

LaTeX on Cloud

LaTeX is now in the cloud. It looks really cool, and seems like a great way to collaborate on a paper with co-authors all over the world. Check it out:

Thursday, February 14, 2013

Stochastic Challenge

An educational resource for students or anyone wanting to learn more about stochastic processes may be found at It was developed as part of an NSF-TUES grant, and contains an online encyclopedia and calculators for common calculations. It also has videos to teach you real world problems that involve different companies. Each video will have the problem and the solution to that problem.

Damaraju Raghavarao 1938 - 2013

It is with great sadness we report that Professor Damaraju Raghavarao has passed away. He was Laura H. Carnell Professor of Statistics and the Chair of the Department of Statistics at the Temple University.

Tribute by IISA is available at:

Tuesday, February 12, 2013

Jagannath Wani appointed to Order of Canada

Professor Jagannath Wani is appointed to Order of Canada (the second highest honour for merit in Canada) for his volunteer work in Calgary and India and academic achievements. He is Professor Emeritus of Statistics and Actuarial Sciences at University of Calgary.. The Maharashtra Seva Samiti Organization he founded in 1984 raised close to $7 million in 27 years to help India’s less fortunate, including matching funds from the Canadian International Development Agency and the Alberta government. 

PS: He got his master's degree from Department of Statistics, University of Pune in 1960.

2012 PROSE Award Winning Book: Classic Problems of Probability

Winner of the 2012 PROSE Award for Mathematics from The American Publishers Awards for Professional and Scholarly Excellence.

Classic Problems of Probability presents a lively account of the most intriguing aspects of statistics. From Cardano's 1564 Games of Chance to Jacob Bernoulli's 1713 Golden Theorem to Parrondo's 1996 Perplexing Paradox, the book clearly outlines the puzzles and problems of probability, interweaving the discussion with rich historical detail and the story of how the mathematicians involved arrived at their solutions. 

Wednesday, February 6, 2013

Univariate Probability Distribution Explorer in Mathematica

Wolfram Mathematica introduces the Ultimate Univariate Probability Distribution Explorer! Access formulas for more than 500 distributions and 60 properties options.

Debugging in R

If you are not familiar with the basic debugging tools R provide, there are a few bits of R that can greatly help finding out what exactly has gone wrong and where, which in turn should suggest a reasonable course of action.

Centennial of Markov Chains

Today is the 100th anniversary of Andrey Markov's presentation of what are now known as "Markov chains".

Actually on January 23, 1913 of the Julian calendar, Andrey A. Markov presented for the Royal Academy of Sciences in St. Petersburg his analysis of Pushkin’s Eugene Onegin. At the time, the Russian Empire was using the Julian calendar. The 100th anniversary of the celebrated presentation is actually February 5, 2013, in the now used Gregorian calendar.

To celebrate, Wolfram guys did a case study of Alice in Wonderland. Take a look:

Tuesday, February 5, 2013

90 Days Free Access to ASA Journals

Celebrate the International Year of Statistics with Taylor & Francis and journals of the American Statistical Association! Featured articles from each new issue of the journals are set free for 90 days. Visit the ASA portal page: