Hiroaki Etoh

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We introduce a network-based problem detection framework for distributed systems, which includes a data-mining method for discovering dynamic dependencies among distributed services from transaction data collected from network , and a novel problem detection method based on the discovered dependencies. From observed containments of transaction execution(More)
| This article describes a topological routing path search algorithm embedded in our auto-router for printed circuit boards. The algorithm searches for a topological path that is guaranteed to be transformable into a physical wire satisfying design rules. We propose a method for incrementally verifying design rules during topological path search in a graph(More)
— This article describes an algorithm for curvilinear detailed routing. We significantly improved the average time performance of Gao's algorithm by resolving its bottleneck related to generation of fan-shaped forbidden regions along a wire. We also describe a method for simultaneous wire-spreading and wire-fattening, which consists of enlarging forbidden(More)
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