Patent ID: 7685091

Claim:
A computer-implemented method comprising: accumulating multiple historical collections of blog entries, the blog entries each having been retrieved from a network and each satisfying predefined source and subject matter criteria; scraping, then tokenizing, then stoplist filtering, then vectorizing, then weighting, then normalizing the historical collections of the blog entries; receiving a first user input identifying a subject of which a user intends to analyze prevalence over time in the historical collections of blog entries, the subject being associated with a collection of query terms; determining the query terms associated with the identified subject; selecting a single historical collection of blog entries corresponding to the identified subject, from among the multiple, normalized historical collections of blog entries; determining the prevalence of the query terms over time within the single selected historical collection; generating a line chart illustrating a change in the determined prevalence of the query terms over time, a line of the line chart including points which define hyperlinks to one or more blog entries of the selected single historical collection; receiving a second user input selecting one of the hyperlinks; and presenting the blog entry associated with the selected hyperlink.