Search |  Contact |  SRI Home Do not follow this link, or your host will be blocked from this site. This is a spider trap. Do not follow this link, or your host will be blocked from this site. This is a spider trap. Do not follow this link, or your host will be blocked from this site. This is a spider trap.A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A ASRI International.  333 Ravenswood Avenue.  Menlo Park, CA 94025-3493. SRI International is a nonprofit corporation.

AIC Seminar Series

Intelligent Assistants: A Decision-Theoretic Model

Sriraam NatarajanAritificial Intelligence Center, SRI International

Date:  2007-06-28 at 16:00

Location:  EJ228 (SRI E building)  (Directions)

   Abstract

There have been several personal assistant systems ranging from desktop assistants to the ones that assist the elderly. These are well engineered solutions to specific domains and lack an overarching framework. In the first half of the talk, I introduce a decision-theoretic model that captures the general notion of assistance where the goal of the assistant is to minimize the cost of user actions. I present the results in a folder predictor domain where we compare our results against a cost-sensitive supervised learning algorithm.

In the second half of the talk, I extend this work to domains where the user’s policies have rich relational and hierarchical structure. Our results indicate that relational hierarchies allow succinct encoding of prior knowledge for the assistant, which in turn enables the assistant to start helping the user after a relatively small amount of experience.

   Bio for Sriraam Natarajan

Sriraam Natarajan is a PhD candidate working with Prof.Prasad Tadepalli at Oregon State University. He recieved his Bachelor’s from the University of Madras in 2001 and his M.S from Oregon State University in 2004. His PhD thesis work focusses on developing relational models for intelligent assistants. He has published papers on learning in statistical relational models, reinforcement learning and combining the relational models with decision-theory. He is currently a summer intern at SRI focussing on developing a relational model for activity recognition in CALO.

   On-line Resources