Monthly Archives: February 2012

discrimination between CpG islands and random sequences using Markov chains

February 8, 2012
By
discrimination between CpG islands and random sequences using Markov chains

Major part of modern research is trying to find patterns in the given dataset using learning methods. One of the methods that can use a priori information for such purpose is Markov chains, in which the probability of symbol occurrence … Continue reading →

Read more »

Revolution R update adds Red Hat 6 support

February 8, 2012
By

The Dev Team at Revolution Analytics recently released an update to the Revolution R 5 family. Version 5.0.1 adds compatibility with Red Hat Enterprise Linux 6 for all editions (Community, Academic and Enterprise). This expands the platform support to Red Hat 5, Red Hat 6 and Microsoft Windows. For Revolution R Enterprise customers and users of the free Academic...

Read more »

"R": PLS Regression (Gasoline) – 005

February 8, 2012
By
"R": PLS Regression (Gasoline) – 005

Let´s see know how to plot the scores for the 3 PLS Components:  We can see the explained variance from each component in the diagonal.We can get it from R with:> explvar(gas1)   Comp 1      Comp 2  &nbs...

Read more »

Zero rates with futile.paradigm

February 8, 2012
By
Zero rates with futile.paradigm

Here’s a short example of calculating zero rates and discount factors from cash rates using futile.paradigm. Of note is how …Continue reading »

Read more »

We Keep Our Vehicles Longer

February 8, 2012
By
We Keep Our Vehicles Longer

Description: Average age of passenger cars and light trucks in the United States since 1995. The gray area represents the possible variance of the trend line with 95% confidence.Data: https://www.polk.com/company/news/average_age_of_vehicles_...

Read more »

OpenCPU, R in the Cloud

February 8, 2012
By
OpenCPU, R in the Cloud

I ran across OpenCPU today. If you have any intest in R and reproducible research this is definitely worth checking out. Also, it looks like I might want to explore the potential of embedding functions in websites. Hm . . . .

Read more »

Hadley Wickham: ggplot2 Webinar (Today!)

February 8, 2012
By

Title: A Backstage Tour of ggplot2 with Hadley WickhamDate: Wednesday, February 8, 2012Time: 11:00AM - 12:00PM PacificPresenter: Hadley Wickham, Professor of Statistics, Rice UniversityRegister here.I used ggplot2 extensively a few years ago, but rever...

Read more »

recents advances in Monte Carlo Methods

February 8, 2012
By
recents advances in Monte Carlo Methods

Next Thursday (Jan. 16), at the RSS, there will be a special half-day meeting (afternoon, starting at 13:30) on Recent Advances in Monte Carlo Methods organised by the General Application Section. The speakers are Richard Everitt, University of Oxford, Missing data, and what to do about it Anthony Lee, Warwick University, Auxiliary variables and many-core

Read more »

RStudio Server part 3: using an ssh tunnel for high performance

February 8, 2012
By

In part 2 of this series of posts on RStudio Server, I commented that I suspected that RStudio Server would be fast. The first time I tried this from a remote connection, I was disappointed with the performance. Many companies… See more ›

Read more »

A spell-checker in R

February 7, 2012
By
A spell-checker in R

I came across Dr. Peter Norvig’s blog about writing a basic spell-checker (http://norvig.com/spell-correct.html), and just had to try to implement it in R. Please excuse the ugly-ish code (I have not optimized it or commented it adequately at this point, but you can get the idea of what it does by reading Dr. Norvig’s blog).

Read more »