Take any paper titled along the lines of "X predicts the stock market" with a big grain of salt. In this paper's case, the data analyzed is limited to under one year, and we never know how many parameterizations or models the authors looked at to get the correlations they published.<p><a href="http://nerdsonwallstreet.typepad.com/my_weblog/files/dataminejune_2000.pdf" rel="nofollow">http://nerdsonwallstreet.typepad.com/my_weblog/files/datamin...</a>
At the moment, it's being put to the test:<p>British hedge fund invests 25 million pounds for IU professor’s Twitter research
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