SENTIMENT CALCULUS FOR A METHOD AND SYSTEM USING SOCIAL MEDIA FOR EVENT-DRIVEN TRADING

A sentiment calculator uses social media messages for the real-time evaluation of publicly assets, in particular traded equities and commodities wherein a sentiment is an integer computed based upon pairs of lexical items in local syntactic context. The sentiment calculator includes a mechanism for determining polarity in social media messages and a mechanism for determining a strength value of lexical items used in social media messages.