... gatherer collects articles from Web sites and threader makes threads for them. The results are stored in XML, and then pushed to subscribers who can capture the flow of topics by following the ... information on the topic. By extracting long paths from the graph and combining them, various stories can be created. The length of a path shows how the nodes on it [ along to the "main ... reference to its source document, an identifying id, genus and differentia words, and other information on the article. The tag <follows> is used to denote arcs from the ar- ticle to related...