Applied Semantic Web Technologies

340  ◾  Donato Barbagallo et al.

disambiguation is discussed by Magnini et al. (2002). Our engine disambiguates by

selecting among remaining synsets based on their domains. Empirical experiments

have proven that a well articulated sentence can be referred to multiple domains.

WordNetDomains attributes each word to several domains. Our lter counts the

number of words per domain, represented by at least one word in a sentence, and

then eliminates the domains with scores below a given threshold (the value has

been empirically set to 0.2).

Pattern correction rules—is lter applies a set of well known syntactic rules

that rene the evaluation of sentiment:

1. Adverb–adjective pattern modies the polarity of an adjective when matched

with an adverb ...