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Wall Street Birds Pro Software: software para tomada de decisões na bolsa que utiliza dados do twitter. Cita como exemplo o artigo Twitter mood predicts the stock market
Granger causality test: is a statistical hypothesis test for determining whether one time series is useful in forecasting another.
TweetTrader.net strives to be the most innovative financial information market for stock microblogs. Twitter has become a vibrant forum to exchange financial information and trading advice.
http://quant.stackexchange.com/ forum
StockTwits operates as an online community that provides information about investments and stocks. It provides users to give an opinion about a specific stock symbol through a tweet
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