Tal Dayan

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4 multi-layer topological router for generating rubber-band sketches is described. The router uses hierarchical top-down partitioning to perform global routing for all nets simultaneously. It combines this with successive refinement to help correct mistakes made before more detailed local info rmation is discovered. Layer assignment is performed during the(More)
abstract Current PCB-based routing tools are rapidly running out of steam when it comes to meeting the performance and cost challenges presented by today's packaging technologies, including thin-lm multichip modules. This paper describes SURF|a new routing system designed speciically to meet these challenges. The strength of the SURF system is derived from(More)
A chess program that uses its transposition table to learn from experience. Getting systems to develop their knowledge bases from experience is a diicult but important challenge. It is hoped that the example the Morph project provides of how several learning methods can be combined to exploit experience in the form of pws will provide at least one framework(More)
The performance advantages of MCM packaging are well known and have received much attention. It is becoming increasingly clear however that if MCMs are to succeed, they will have to be attractive in terms of cost as well as performance for consumer oriented designs. The SURF rubber-band router is designed to meet many of the needs of thin-lm MCM layout that(More)
navigation requires more than the hippocampal spatial signal: It also entails decision-making, goal-directed behaviors, sensory-motor integration , and other cognitive processes (mediated by brain structures such as the striatum, cerebellum, and prefrontal and parietal cortices). Thus, to elucidate the neural basis of real-life navigation in bats (27, 29),(More)
We describe a practical iterative approximation algorithm that can be used for homotopic positioning of Steiner points and vias for minimization of a wiring cost in rubber-band sketches. The algorithm is based on modeling the interconnect as a physical system and iterativly finding it minimum energy state. This method has a wide range of applications(More)
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