An alternative to [Rete]. Very similar data structure, but doesn't keep a cache of previous matches in Beta nodes - instead it recalculates the matches each go. Memory savings... Asymmetric deletion - claims to speed up the process. ---- [lexfiend] 20 Oct 2005: Dan Miranker's seminal TREAT paper is available for a fee: [http://portal.acm.org/citation.cfm?id=39946] ---- [Category Data Structure]