VAL@SAIL.STANFORD.EDU.UUCP (06/02/87)
[Forwarded from the Stanford bboard.] Yoav Shoham asked me to send a nice little poem to this mailing list: With logics that are monotonic Relations are nice but platonic It's when you permit Just models that fit That things become most erotonic Yoav will also speak at our seminar on a related subject: POTENTIAL HISTORIES AND INERTIAL THEORIES Yoav Shoham Thursday, June 4, 4:15pm Bldg. 160, Room 161K In previous talks I never managed to get to my solution to the extended-prediction problem (which is my name for the problem subsuming the frame problem, a name that, shall we say, never quite caught). I'll describe the intuitive concept of a potential history, which has a strong McDermott-like persistence flavor. I'll then embed the concept formally within the logic of chronological ignorance. I'll identify a class of theories, called inertial theories, which extend causal theories, and yet which a. are expressive enough to capture the notion of potential histories, and b. have the "unique model" and easy computability properties. My intention is this time to go into some detail. I'm still not sure I have enough material for an hour, and if I don't I'll ask the audience some questions on TMS's. -------