729 search results for "finance"

Handling Large CSV Files in R

A follow-up of my previous post Excellent Free CSV Splitter. I asked a question at LinkedIn about how to handle large CSV files in R / Matlab. Specifically, Quotationsuppose I have a large CSV file with over 30 million number of rows, both Matlab / R lacks memory when importing the data. Could you...

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Announcing Big Data for Revolution R

August 3, 2010
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I've hinted this was coming a few times before, but with today's press release the announcement is official: the next release of Revolution R Enterprise will include "Big Data" capabilities thanks to the new RevoScaleR package. We're pretty excited at how it's turned out: it's kinda amazing to be able to use R's formula syntax like this: arrDelayLm2 <-...

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The Mule goes SURFing

July 29, 2010
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A month ago I posted about “SURF”, the newly-established Sydney R user forum (R being an excellent open-source statistics tool). Shortly after publishing that post, I attended the inaugural forum meeting. While we waited for attendees to arrive, a few people introduced themselves, explaining why they were interested in R and how much experience they

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What (Search Engines Think) People Want

July 17, 2010
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What (Search Engines Think) People Want

R O How G8 U R!Hey, R U there? Having used the R language for awhile now, I would like to let you know that R works - in fact R works really well. If you keep up with R news this should be no surprise...this is, after all...an r blog! R and R alone c...

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Wanted: Big-data beta testers

July 15, 2010
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We're nearing completion of the package of statistical tools for very large data sets that I gave an early preview of at R/Finance 2010. It will be released for Revolution R Enterprise later this year, but we're looking for some R users with big data sets to put the 1.0 version through its paces in the beta program and...

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Chaos in the Financial Markets?

July 6, 2010
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Chaos in the Financial Markets?

Over the years I've had quite a few interested individuals ask me about Chaos and its applications towards trading. Well, as hidden markov models and speech processing were made popular by James Simons and his team at Renaissance Technologies, one cou...

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Excellent R Code Format Package

Excellent R Code Format Package

I have been looking for this type of package for several days, and luckily found it today. Unquestionable R is powerful, however, R programming is unfriendly as far as I concern, mainly due to the lack of format shortcut, which makes the R codes rathe...

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Simple Dummy R GUI Generator

Simple Dummy R GUI Generator

Imagine you finish a dirty coding project and want to present to your boss who is not in a good mood (may not be occasionally), how are you going to start? Show him your hundreads of lines code, point to the lines, explain what the arguments and outputs are? No, it is not a smart way since you are...

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Stock Analysis using R

June 26, 2010
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Stock Analysis using R

Want to do some quick, in depth technical analysis of Apple stock price using R? Theres a package for that!The Quantmod package allows you to develop, testing, and deploy of statistically based trading models.  It provides the infrastructure for d...

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Employee productivity as function of number of workers revisited

June 22, 2010
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Employee productivity as function of number of workers revisited

We have a mild obsession with employee productivity and how that declines as companies get bigger. We have previously found that when you treble the number of workers, you halve their individual productivity which is mildly scary. We revisit the analysis for the...

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