Monthly Archives: September 2013

Using R to Solve a Geography Puzzle

September 25, 2013
By
Using R to Solve a Geography Puzzle

The puzzle: find two points inside the United States such that Both points are in the same state The straight line segment (shortest great circle) connecting them crosses the largest number of distinct states This came up during a recent road trip through Pennsylvania, Maryland, West Virginia, and Virginia, where I noticed that it’s possible...

Read more »

Direction of Change Forecasting II: The case of the UK

September 25, 2013
By
Direction of Change Forecasting II: The case of the UK

In the previous blog article I discussed a dynamic binary model for the directional forecast of the US equity market using a select number of economic, fundamental and technical variables as predictors. A natural direction for extending that research would be to look at similar models in different countries or for other asset classes. In

Read more »

Profiling R code

September 25, 2013
By
Profiling R code

Profiling R code gives you the chance to identify bottlenecks and pieces of code that needs to be more efficiently implemented . Profiling R code is usually the last thing I do in the process of package (or function) development. In my experience we can reduce the amount of time necessary to run an R

Read more »

R as a command-line tool for data science

September 24, 2013
By

Data Scientist Jeroen Janssens recently published a useful list of 7 data science tools that you can use from the command line. This doesn't just mean they're convenient tools for command-line junkies: it also means you can easily chain them together with data sources for offline, automated processes. Included in the list are JSON processing tools (jq, json2csv), the...

Read more »

Patterns in the Ivy II: Beyond the Giant Component

September 24, 2013
By
Patterns in the Ivy II: Beyond the Giant Component

Last week’s post on the metal collaboration network brought attention largely to the “giant component”–the largest subgraph in a network where all actors have at least one path to all other actors. In large networks, even sparse ones, giant components typically emerge and include the majority of actors in the network. While focusing on the… Continue reading →

Read more »

You stole my idea!

September 24, 2013
By
You stole my idea!

Earlier today, Gareth has showed me a recent, interesting paper by Michael Sweeting (and colleagues). In the paper, Micheal et al describe their work on a R package to extend on the framework of the Continual Reassessment Method (the ori...

Read more »

My talk @ GSK

September 24, 2013
By

This Thursday I'll give a talk at the GSK Statistics Forum. Erika (with whom I shared a train journey to the 2012 BayesPharma and a group walk in Oxfordshire a few years back) now works at GSK and invited me. I will talk about the model for c...

Read more »

RStudio v0.98 Preview (Debugging Tools and More)

September 24, 2013
By
RStudio v0.98 Preview (Debugging Tools and More)

We’re very pleased to announce that a preview release of RStudio IDE v0.98 is available for download now. Major highlights of the new release include debugging tools, many improvements to environment/workspace browsing, and a new way to create HTML5 presentations using R Markdown. As usual there are also many small improvements and bug fixes. We’ll

Read more »

Bio7 1.7.1 for Linux Released

September 24, 2013
By
Bio7 1.7.1 for Linux Released

24.09.2013 I released a new Linux version of Bio7 (64-bit only – see Screenshots below). For an overview of the new features please read the release notes for Windows 1.7.0 and 1.7.1: http://bio7.org/?p=2049 http://bio7.org/?p=2112 In addition some Linux specific improvements are embedded in this release. Additional Linux features: Rserve can be opened with a Gnome

Read more »

Zurich, Oct 2013 – R Crash Course

September 24, 2013
By

(This article was first published on Rmetrics blogs, and kindly contributed to R-bloggers) To leave a comment for the author, please follow the link and comment on his blog: Rmetrics blogs. R-bloggers.com offers daily e-mail updates about R news and tutorials on topics such as: visualization (ggplot2, Boxplots, maps, animation), programming (RStudio, Sweave, LaTeX, SQL, Eclipse, git, hadoop, Web...

Read more »