Monthly Archives: February 2014

Call for papeRs in the near future

February 21, 2014
By
Call for papeRs in the near future

I am really happy to share some great news with all R users about some upcoming conferences in the near future. The calls for papers are still active for all three below events that I plan to visit, I hope I could meet more and more useRs there!The closest event in time will be at Bucharest, Romania on the...

Read more »

A survival guide to Data Science with R, from Graham Williams

February 21, 2014
By

Graham Williams is the Lead Data Scientist at the Australian Taxation Office, and the creator of Rattle, an open-source GUI for data mining with R. (Check out some recent reviews/demos of Rattle on this blog here and here.) Dr Williams continues his many contributions to the R community with One Page R, a "Survival Guide to Data Science with...

Read more »

Unsolved Mysteries of Rebalancing

February 21, 2014
By

There is a lot not yet fully understood about rebalancing in portfolio management.  This 2013 paper from Nardon and Kiskiras is the best I have read yet. Kiskiras, John and Nardon, AndreaPortfolio Rebalancing: A Stable Source of AlphaJanuary 18, 2013...

Read more »

One day discount on Practical Data Science with R

February 21, 2014
By
One day discount on Practical Data Science with R

Please forward and share this discount offer for our upcoming book. Manning Deal of the Day February 22: Half off Practical Data Science with R. Use code dotd022214au at www.manning.com/zumel/. Related posts: Data Science, Machine Learning, and Statis...

Read more »

Interactive exploration of a prior’s impact

February 21, 2014
By
Interactive exploration of a prior’s impact

The probably most frequent criticism of Bayesian statistics sounds something like “It’s all subjective – with the ‘right’ prior, you can get any result you want.”. In order to approach this criticism it has been suggested to do a sensitivity analysis (or robustness analysis), that demonstrates how the choice of priors affects the conclusions drawn

Read more »

Forecasting within limits

February 21, 2014
By
Forecasting within limits

It is common to want forecasts to be positive, or to require them to be within some specified range . Both of these situations are relatively easy to handle using transformations. Positive forecasts To impose a positivity constraint, simply work on the log scale. With the forecast package in R, this can be handled by specifying the Box-Cox parameter...

Read more »

Self-written function help

Self-written function help I have noted at least one instance (and there are probably others) about how Python's docStrings are so great, and wouldn't it be nice to have a similar system in R. Especially when you can have your new function tab completion available depending on your development environment. This is a false statement, however. If you set up your...

Read more »

Most Entertaining NBA Teams

February 20, 2014
By
Most Entertaining NBA Teams

In a previous post I highlighted the Thunder keeping more of their games closer (within 3 points) than anyone else in the NBA.  As the season has progressed, this has changed.  The Thunder are still in the top five of most close games as of 2...

Read more »

The gap between data mining and predictive models

February 20, 2014
By
The gap between data mining and predictive models

The Facebook data science blog shared some fun data explorations this Valentine’s Day in Carlos Greg Diuk’s “The Formation of Love”. They are rightly receiving positive interest in and positive reviews of their work (for example Robinson Meyer’s Atlantic article). The finding is also a great opportunity to discuss the gap between cool data mining Related posts: A Demonstration of...

Read more »

Control R from Excel

February 20, 2014
By
Control R from Excel

Here is a simple script modified from univie.ac.at that you can just run in R. Follow the instructions in the ensuing dilaogue boxes after running the script. This RExcel interface will help you if you tend to work with people whose knowledge of R is ...

Read more »

Search R-bloggers

Sponsors

Never miss an update!
Subscribe to R-bloggers to receive
e-mails with the latest R posts.
(You will not see this message again.)

Click here to close (This popup will not appear again)