# 583 search results for "SQL"

## SAP CodeJam Montreal

November 13, 2012
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Thanks to an initiative of Krista Elkin, Jonathan Druker and myself ( with a lot of support from Craig Cmehil and Helena Losada ), SAP CodeJam Montreal is going live on Thursday, December 13, 2012 from 3 to 9 pm in the SAP Labs Montreal offices.This is...

## Benchmarking bigglm

November 13, 2012
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By Joseph Rickert In a recent blog post, David Smith reported on a talk that Steve Yun and I gave at STRATA in NYC about building and benchmarking Poisson GLM models on various platforms. The results presented showed that the rxGlm function from Revolution Analytics’ RevoScaleR package running on a five node cluster outperformed a Map Reduce/ Hadoop implementation...

## analyze the consumer expenditure survey (ce) with r

November 13, 2012
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the consumer expenditure survey (ce) is the primo data source to understand how americans spend money.  participating households keep a running diary about every little purchase over the year.  those diaries are then summed up into precise expenditure categories.  how else are you gonna know that the average american household spent $34 (±2) on bacon,$826 (±17) on cellular...

## R Tips for Quantitative Trading

November 10, 2012
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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

## SAP HANA and R (The way of the widget)

November 3, 2012
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A real developer never stops learning that's a quote I always love to repeat...because it applies to my life...you can know a lot of things but there's always something new to learn, or to re-learn. That's why a couple of days ago I start reading wxPyt...

## Which functions in plyr do people use?

November 2, 2012
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This is the question that Hadley Wickham recently set out to discovering by asking frequent R and plyr users how they use it in an online survey. Once a decent number of people have responded, Hadley quickly went forward and produced a short analysis of the plyr usage survey, and published it in RPubs.  With his permission, I am...

## Generate stock option prices – How to simulate a Brownian motion

October 29, 2012
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The Brownian motion is certainly the most famous stochastic process (a random variable evolving in the time). It has been the first way to model a stock option price (Louis Bachelier's thesis in 1900).The reason why is easy to understand, a Brownian mo...

## Vendor news: TIBCO’s proprietary R runtime; Teradata’s appliance integrates R

October 17, 2012
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In a webinar today previewing Spotfire 5 (scheduled for release this November), TIBCO announced that it will include TERR: The Tibco Enterprise Runtime for R. TERR is a closed-source reimplementation of the R language engine, and not based on the GPL-licensed R project from the R Foundation. Here's the relevant slide from the webinar: By making the TERR engine...

## analyze the current population survey (cps) annual social and economic supplement (asec) with r

October 10, 2012
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the annual march cps-asec has been supplying the statistics for the census bureau's report on income, poverty, and health insurance coverage since 1948.  wow.  the us census bureau and the bureau of labor statistics (bls) tag-team on this one...