11. A method comprising: separating at least a portion of text into one or more segments, each segment comprising one or more words; assigning one or more lexical categories to one or more of the one or more words of each segment; identifying a feature word and an opinion word contained in the one or more segments; and calculating an opinion score based upon an opinion grouping, the opinion grouping including at least the feature word and the opinion word identified by the information extractor.
15. The method of claim 11 , further comprising determining whether to approve the opinion grouping before calculating the opinion score.