April 29, Tuesday
12:00 – 14:00
Efficient Probabilistic Reasoning in Bayes Nets with Mutual Exclusion and Context Specific
Computer Science seminar
Lecturer : Eyal Shimony
Affiliation : Ben Gurion University
Location : -101/58
Host : Mayer Goldberg
Prior work has shown that context-specific independence (CSI) in Bayes networks can be exploited to speed up belief updating. We examine how networks with variables exhibiting mutual exclusion (e.g. ``selector variables''), as well as CSI, can be efficiently updated. In particular, singly-connected networks, that have an additional common selector variable, can be updated in linear time, where quadratic time would be needed without the mutual exclusion requirement. The above result has direct applications, as such network topologies can be used in predicting the ramifications of user selection in some multimedia systems.