W
Walter Hamscher
Researcher at Massachusetts Institute of Technology
Publications - 12
Citations - 764
Walter Hamscher is an academic researcher from Massachusetts Institute of Technology. The author has contributed to research in topics: Troubleshooting & Model-based reasoning. The author has an hindex of 8, co-authored 12 publications receiving 763 citations. Previous affiliations of Walter Hamscher include PricewaterhouseCoopers.
Papers
More filters
Book ChapterDOI
Model-based reasoning: troubleshooting
Randall Davis,Walter Hamscher +1 more
TL;DR: Model-based reasoning as mentioned in this paper surveys the state of the art in model-based diagnosis and troubleshooting and concludes that diagnostic reasoning from a model is reasonably well understood, but there is a rich supply of research issues in the modeling process itself.
Book
Diagnosis based on description of structure and function
TL;DR: It is argued for the importance of fault models that are explicit, separated from the troubleshooting mechanism, and retractable in much the same sense that inferences are retracted in current systems.
Proceedings Article
Diagnosis based on description of structure and function
TL;DR: In this article, the authors explore the use of such models in troubleshooting digital electronics and argue for the importance of fault models that are explicit, separated from the troubleshooting mechanism, and retractable in much the same sense that inferences are retracted in current systems.
Proceedings Article
Diagnosing circuits with state: an inherently underconstrained problem
Walter Hamscher,Randall Davis +1 more
TL;DR: In this paper, the authors describe candidate generation for digital devrces with state, a fault localization problem that is intractable when the devices are described at low levels of abstraction, and is underconstrained when described at higher levels of abstractions, and demonstrate that the same candidate generation procedure that works for combinatorial circuits becomes indiscriminate when applied to a state circuit modeled in that extended representation.
Proceedings Article
Joshua: uniform access to heterogeneous knowledge structures or why joshing is better than conniving or planning
TL;DR: Joshua, a system which provides syntactically uniform access to heterogeneously implemented knowledge bases, is presented and it is shown how a different TMS, implemented for another system, was thus Interfaced to Joshua, speeding up one application by a factor of 3.