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  Samstag, 14. April 2007

Google acquires DoubleClick. The sound of chairs flying ...

Paul Kedrosky on Bid 'Em Up Brin'In describing the pitfalls of data mining, David Leinweber "sifted through a United Nations CD-ROM and discovered that historically, the single best predictor of the Standard & Poor's 500-stock index was butter production in Bangladesh."'

Addendum: Being "a good citizen of the interweb", Mr Leinweber has uploaded a copy of the article detailing this (& more) for your entertainment:

Stupid Data Miner Tricks: Overfitting the S&P 500

"When doing this kind of analysis it's important to be very careful what you ask for, because you’ll get it."

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