LAWS@SRI-AI.ARPA (07/16/85)
From: AIList Moderator Kenneth Laws <AIList-REQUEST@SRI-AI> AIList Digest Tuesday, 16 Jul 1985 Volume 3 : Issue 94 Today's Topics: Seminars - Temporal Reasoning (SRI) & Geometric Reasoning (Penn) & Electronic Encyclopedia (MIT), Conferences - Aerospace Applications of AI & Cognitive Science Society Annual Conference ---------------------------------------------------------------------- Date: Wed 10 Jul 85 12:22:15-PDT From: LANSKY@SRI-AI.ARPA Subject: Seminar - Temporal Reasoning (SRI) Temporal Imagery: An Approach to Reasoning about Time for Planning and Problem Solving Thomas Dean Yale University 11:00 AM, Monday, July 15 Room EJ232, SRI International Reasoning about time typically involves drawing conclusions on the basis of incomplete information. Uncertainty arises in the form of ignorance, indeterminacy, and indecision. Despite the lack of complete information a problem solver is continually forced to make predictions in order to pursue hypotheses and plan for the future. Such predictions are frequently contravened by subsequent evidence. The talk will describe a computational approach to temporal reasoning that directly confronts these issues. The approach relies upon a method for keeping track of the dependency relations among assertions in a temporalized data base. The resulting computational framework extends the functionality of reason maintenance systems [Doyle 79] to handle assertions with a temporal extent. The techniques developed extend the functionality of current approaches to dealing with time in planning (e.g., [Sacerdoti 77], [Tate 77], [Vere 83], and [Allen 83]). Examples from robot problem solving will be used to illustrate the techniques. ------------------------------ Date: Thu, 11 Jul 85 12:25 EDT From: Tim Finin <Tim%upenn.csnet@csnet-relay.arpa> Subject: Seminar - Geometric Reasoning (Penn) A GEOMETRIC REASONING SYSTEM FOR MOVING AN OBJECT WHILE MAINTAINING CONTACT WITH OTHERS Anastasia Koutsou, Dept. of Artificial Intelligence, University of Edinburgh Thursday, 11 July 1985 3:00 pm 216 Moore This paper concerns the problem of moving a polyhedral object while maintaining contact with a set of stationary polyhedral objects. A method is developed for deriving a sequence of compliant-guarded motions in order to move an object from an initial configuration to a final configuration while it is in contact. This sequence is derived from a sequence of spatial relationships among the features of the objects. The construction of a graph of spatial relationships representing the space where the object is in contact with its environment is described. This is done using a geometric reasoning system which is able to find a relationship equivalent to a conjunction of two relationships and to construct the new features among which the new relationship holds. ------------------------------ Date: 12 Jul 1985 10:49 EDT (Fri) From: Crisse Ciro <CRISSE%MIT-OZ@MIT-MC.ARPA> Subject: Seminar - Electronic Encyclopedia (MIT) Wednesday, July 17 8th Floor Playroom NE43 3:00 PM INTERACTIVE SIMULATIONS FOR AN ELECTRONIC ENCYCLOPEDIA Alan Borning Computer Science Department University of Washington In the first part of this seminar, I'll describe work on a prototype electronic encyclopedia. The prototype makes use of the text from an existing print encyclopedia, and employs a window-oriented browser on a Symbolics 3600 computer. Selected articles in the prototype also include some features that take advantage of the new medium, including interactive simulations, links to a picture library stored on a videodisk, and active text for browsing cross references, expanding abbreviations, and converting from one measurement system to another. The construction of a comprehensive electronic encyclopedia that takes full advantage of the computer medium will be an enormous task, and will require good computer-based tools to support the encyclopedia's authors. The second part of the seminar will concern research on one such tool: a kit for constructing interactive simulations. Using this kit, authors can construct simulations of such things as manipulable diagrams illustrating geometric theorems or simulations of physics experiments. The kit, an extension of the ThingLab system, uses constraints to specify the relations between parts of the simulations, and provides convenient graphical tools for assembling and manipulating simulations. As part of the talk two videoptapes will be shown: first, a brief demo of the prototype electronic encyclopedia, and second, a demo of ThingLab, including recent enhancements. Refreshments will be served HOST: Randall Davis ------------------------------ Date: 12 Jul 1985 10:47-EDT From: cross <cross@wpafb-afita> Subject: Conference - Aerospace Applications of AI AEROSPACE APPLICATIONS OF ARTIFICIAL INTELLIGENCE September 16-19, 1985 Dayton Convention Center, Dayton Ohio The purpose of the conference is to establish the present state of the art in AI in selected areas of importance to the aerospace community. There will be session in avionics, manufacturing, maintenance, decision support systems, expert system building tools, programming languages, man-machine interfaces, and new architectures. Each session will be keynoted by a prominent researcher who will differeniate between present capabilities and research problems. Keynote speakers are: B. Chandrasekaran, M. Fox, T. Garvey, V. Lesser, D. Michie, K. Bowen, W. Rouse, E. Sacerdoti, M. Stefik, and E. Taylor. In addition, each session will include presentation from industry and government labs. Each session will conclude with a panel discussion. The conference will also feature a session that explores senior management expectations. Exhibits will be open to the public. Conference fee: $225.00 (includes luncheon and banquet). Registration: AAAIC'85, PO Box 31250, Dayton OH 45431-0250 send for a registration form or call (513) 426-8530 for more information Lodging: A Block of rooms is reserved at the Stouffer's Dayton Plaza. Reseravations are preferably made with the conference registration form. If necessary, reservations can be made directly with Stouffer's, (513) 224-0800. ------------------------------ Date: Fri, 12 Jul 85 05:46:02 pdt From: gluck@SU-PSYCH (Mark Gluck) Subject: Cognitive Science Society Annual Conference: General Info [Forwarded from the Stanford bboard by Laws@SRI-AI.] SCHEDULE: Thursday, August 15th, 8:30am - Saturday, August 17th, 5:00pm AIRLINE TRANSPORTATION: 30-35% Discount on American Airlines, call 1-800-433-1790. Conference code is: star file s7387. Closest airport is Orange Country/John Wayne. Taxi to campus if $5.00. DORMITORY ACCOMIDATIONS: Double Rate: $38.00 per person per day Single Rate: $45.00 per person per day LOCATION: At the campus of Univ. California, Irvine (also known as U. Cal, Disney), which is about 40 miles south of LA and 5 miles from the beach. REGISTRATION: General: $65.00 Student: $45.00 MAJOR ADDRESSES: Endel Tulving, Allen Newell, Shimon Ullman, Roger Schank ------------------------------ End of AIList Digest ********************