Sometimes the "arb" in "stat arb" stands for "arbitrary". True story.
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Replying to @joshua_ulrich
.@joshua_ulrich And here I was thinking "arb stats" (== arbitrary statistics) was what data scientists do

Apr 10, 2013 · 7:22 PM UTC

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Replying to @eddelbuettel
@eddelbuettel @joshua_ulrich But if they do it on big data, then it becomes melt your face off, ground-breaking, and significant.