The presentation was prepared for a security seminar on logic. It is based on the paper Efficient Filtering in Pub-Sub Systems using Binary Decision Diagrams by Campailla et. al. 2001. As the title suggests, as far as I know, this paper is the first of its kind to introduce OBDD's (Ordered BDD's) to represent and manipulate subscriptions in content based pub-sub systems.
Update: Removed the embedded code from the Slideshare as it brings my blog to its knees. (Slideshare does not seems to scale well and it sucks for large presentations)