898 search results for "parallel"

Big Data Trees with Hadoop HDFS

December 4, 2012
By

Last month's release of Revolution R Enterprise 6.1 added the capability to fit decision and regresson trees on large data sets (using a new parallel external memory algorithm included in the RevoScaleR package). It also introduced the possibility of applying this and the other big-data statistical methods of RevoScaleR to data files distributed in in Hadoop's HDFS file system*,...

Read more »

pbdR Updates – Distributed lm.fit() and More

December 3, 2012
By

Over the weekend, we updated all of the pbdR packages currently available on the CRAN.  The updates include tons of internal housecleaning as well as many new features. Notably, pbdBASE_0.1-1 and pbdDMAT_0.1-1 were released, which contain lm.fit() methods.  This function in particular has been available at my github for over a month, but didn't make its way to the...

Read more »

forecast package v4.0

December 2, 2012
By
forecast package v4.0

A few days ago I released version 4.0 of the forecast package for R. There were quite a few changes and new features, so I thought it deserved a new version number. I keep a list of changes in the Changelog for the package, but I doubt that many people look at it. So for the record, here are...

Read more »

Trading with Support Vector Machines (SVM)

November 30, 2012
By
Trading with Support Vector Machines (SVM)

Finally all the stars have aligned and I can confidently devote some time for back-testing of new trading systems, and Support Vector Machines (SVM) are the new “toy” which is going to keep me busy for a while. SVMs are a well-known tool from the area of supervised Machine Learning, and they are used both

Read more »

edply: combining plyr and expand.grid

November 30, 2012
By
edply: combining plyr and expand.grid

Here’s a code snippet I thought I’d share. Very often I find myself checking the output of a function f(a,b) for a lot of different values of a and b, which I then need to plot somehow. An example: here’s a function that computes the value of a sinusoidal function on a grid of points,

Read more »

2012-11 Generating Animation Sequence Descriptions

November 29, 2012
By

This report describes the animaker package for generating descriptions of animation sequences. An animation sequence is composed by combining atomic animations in series to create sequence animations or in parallel to create track animations. Functions are provided for manipulating animation … Continue reading →

Read more »

Functional programming with lambda.r

November 20, 2012
By
Functional programming with lambda.r

After a four month simmer on various back burners and package conflicts, I’m pleased to announce that the successor to …Continue reading »

Read more »

Webinar Tomorrow: Big Data Trees and Hadoop Connection in Revolution R Enterprise 6.1

November 14, 2012
By

Tomorrow at 9AM Pacific, Revolution Analytics VP of Product Development Sue Ranney will introduce two key Big Data features of the new Revolution R Enterprise 6.1. Now you can train classification and regression trees on data sets of unlimited size, quickly and using the resources of multiple processors and clusters. (This white paper describes our implementation of tree models...

Read more »

Big Data ETL and Big Data Analysis

November 14, 2012
By
Big Data ETL and Big Data Analysis

I was at Strata New York 2012 last month. Great conference! Thanks O'Reilly media for assembling the industry leaders and running it well.I understand it was too crowded for some of my out-of-town friends. Stepping out to the streets of mid-town Manhat...

Read more »

R Tips for Quantitative Trading

November 10, 2012
By

The article below is an updated version of an article I wrote  for R-Bloggers in August 2010. As a first post I thought it was a good idea to introduce one of the best tool out there for quantitative  trading: R R is a free software environment for statistical computing and graphics. It compiles and

Read more »