Agilent Literature Search uses two vocabularies, called lexicons, to match "nouns" and "verbs" of interest when analyzing documents that are retrieved by the search engines. Agilent Literature Search uses two lexicons ,
During the document analysis phase of a search, an association is extracted for every sentence containing at least two nouns and one verb that are contained in the lexicons . Associations are then converted into interactions , which are further grouped into a network