2875 search results for "twitter"

Download and parse EDHEC hedge fund indexes

June 4, 2012
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Download and parse EDHEC hedge fund indexes

In our pre-conference workshop, Brian Peterson and I worked with the EDHEC hedge fund indexes as a way to demonstrate how to use PortfolioAnalytics within the context of long-term allocation problems. Although they are not investible, these indexes are probably more representative than most given that they are, in fact, meta-indexes. Other indexes might be

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Longevity and mortality dynamics with R

June 4, 2012
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Longevity and mortality dynamics with R

Following the previous post on life contingencies and actuarial models in life insurance, I upload additional material for the short course at the 6th R/Rmetrics Meielisalp Workshop & Summer School on Computational Finance and Financial Engineering organized by ETH Zürich, https://www.rmetrics.org/. The second part of the talk (on Actuarial models with R) will be dedicated to longevity and mortality. A complete...

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Announcing RPubs: A New Web Publishing Service for R

June 4, 2012
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Announcing RPubs: A New Web Publishing Service for R

Today we’re very excited to announce RPubs, a free service that makes it easy to publish documents to the web from R. RPubs is a quick and easy way to disseminate data analysis and R code and do ad-hoc collaboration with peers. RPubs documents are based on R Markdown, a new feature of knitr 0.5 and RStudio 0.96. To publish

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PDF slides and R code examples on Data Mining and Exploration

June 4, 2012
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PDF slides and R code examples on Data Mining and Exploration

by Yanchang Zhao, RDataMining.com There are some nice slides and R code examples on Data Mining and Exploration at http://www.inf.ed.ac.uk/teaching/courses/dme/, which are listed below. PDF Slides: - Overview of Data Mining http://www.inf.ed.ac.uk/teaching/courses/dme/2012/slides/datamining_intro4up.pdf - Visualizing Data http://www.inf.ed.ac.uk/teaching/courses/dme/2012/slides/visualisation4up.pdf - Decision trees http://www.inf.ed.ac.uk/teaching/courses/dme/2012/slides/classification4up.pdf … Continue reading →

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Making interactive slides with Org mode and googleVis in R

June 3, 2012
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Making interactive slides with Org mode and googleVis in R

There’s been a lot of justifiable excitement in the R community about Yihui Xie’s great work, and most recently the incorporation of his knitr package into the RStudio software. Knitr is seen, justifiably, as a worthy successor to SWeave for … Continue reading →

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11 Million Yellow Slips – City of Toronto Parking Tickets, 2008-2011

June 2, 2012
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11 Million Yellow Slips – City of Toronto Parking Tickets, 2008-2011

IntroductionI don't know about you, but I really hate getting parking tickets. Sometimes I feel like it's all just a giant cash grab. Really? I can't park there between the hours of 11 and 3, but every other time is okay? Well, why the hell not?Bu...

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Distribution of Oft-Used Bash Commands

June 1, 2012
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Distribution of Oft-Used Bash Commands

Browsing commandlinefu.com today, I came across this little one-liner to display which commands I use most often. Here’s what I got: Yep, seems legit. I navigate and look at files a whole bunch (ls, cd, cat), and I do a butt tonne of editing (vim). I sudo like a boss, hop onto various servers (ssh),

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Life contingencies with R

June 1, 2012
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Life contingencies with R

I will be giving in less than four weeks a short course at the 6th R/Rmetrics Meielisalp Workshop & Summer School on Computational Finance and Financial Engineering organized by ETH Zürich, https://www.rmetrics.org/. The talk will be on Actuarial models with R, and first part will be dedicated to life insurance. A complete set of slides can be downloaded from the...

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Simple Text Mining with R

May 31, 2012
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Simple Text Mining with R

I’ve used R for many use cases and Text Mining is one of those. Below is a small snippet to get you started with R and Text Mining. require(fortunes) require(tm) sentences <- NULL for (i in 1:10) sentences <- c(sentences,fortune(i)$quote) d <- data.frame(textCol =sentences ) ds <- DataframeSource(d) dsc<-Corpus(ds) dtm<- DocumentTermMatrix(dsc, control = list(weighting =

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How to Stay Current in Bioinformatics/Genomics

May 29, 2012
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A few folks have asked me how I get my news and stay on top of what's going on in my field, so I thought I'd share my strategy. With so many sources of information begging for your attention, the difficulty is not necessarily finding what's interesting...

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