Data Science. TileDB. Open Source. Quant Research. R. C++. Debian. Linux. Adjunct Clinical Professor, University of Illinois. Lots of coffee. And some running.

Chicago, IL, USA
Joined March 2007
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Replying to @revodavid
@revodavid @joshua_ulrich Maybe you want to harvest highly-ranked SO questions. It's all CC licensed AFAIK ...
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Coauthor just shellacked me with a SVN commit message saying: 'See fortune("sermon")'. Ouch. #rstats
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Replying to @BorowitzReport
Awesome, and well deserved! MT @BorowitzReport "I just got a new font: The New Yorker Acquires Borowitz Report: bit.ly/M8k3nO "
On Ubuntu/Debian, the byobu wrapper (around tmux or screen) is wonderful too. MT @chlalanne Getting started with tmux, bit.ly/Q31dDb
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Replying to @ramhiser
Nice but unheard of. Could the R code been suboptimal? MT @ramhiser Yep, #Rcpp is beast. I sped up some #rstats code by 6,000+ times.
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Replying to @drewconway
@drewconway @statalgo Well, doh, you get free checking,
Replying to @ucfagls
@ucfagls "I'm moving to Canada": Woohoo, as a Canadian immigrant from Europe (now living in the US), I wholeheartedly endorse this move!
Replying to @mikedewar
@mikedewar Nothing is a reference implementation unless it's written by BDR (or maybe MM for distribution functions) ;-) #rstats
Replying to @carlcarrie
@carlcarrie "R User conference presentations": Or go directly to our site at goo.gl/XPsS0 and do attend next year :) #rstats
RcppArmadillo 0.3.2.4 released with a bugfix for g++ 4.7.0/4.7.1. More at goo.gl/87n48 #rstats #rcpp
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Replying to @joshua_ulrich
@joshua_ulrich Seriously: a) Not a _reprodicible_ bug report. b) I have seen R seg.fault of late when doing R CMD SWEAVE and other R CMD.
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Replying to @joshua_ulrich
@joshua_ulrich: It's on purpose, we decided to punish vim users.
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Nice Rcpp benchmark example for agent-based model, soundly beating for loop, apply and plyr goo.gl/aejSl #rstats #rcpp
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Getting Python #numpy data into R: a much faster and more direct solution using RcppCNPy illustrated at goo.gl/yXljU #rstats #rcpp
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Replying to @geospacedman
@geospacedman @hadleywickham And Whit cheated with his rcppbugs and violated the SacredMixedCase rule. :)
Replying to @hadleywickham
@hadleywickham: breathlessly awaiting new package rcpp_cnpy_2 ..... by the way, functions are just npyLoad() and npySave().
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Don't tell @hadleywickham but RcppCNPy started with a call to Rcpp.package.skeleton("RcppCNPy", module=TRUE) ... #rstats #rcpp
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New R package RcppCNPy to read/write #numpy files now on CRAN; more details and praise to Rcpp modules at goo.gl/GJI4e #rstats #rcpp
Replying to @onertipaday
RT "@onertipaday The #rstats Journal Volume 4/1, June 2012 is out! Get it now: bit.ly/M9CNUl" #rstats
Replying to @joshua_ulrich
@joshua_ulrich @geospacedman @hadleywickham @michaelhoffman "There are languages people complain about, and there are languages nobody uses"
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