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Hierarchical Knowledge for Heuristic Problem Solving — A Case Study on the Traveling Salesperson Problem

Abstract : Abstraction is a fundamental feature of human-level intelligence. But it is not clear how to combine knowledge on different levels of abstraction. This paper examines the use of hierarchical knowledge for heuristic problem-solving algorithms, regarding three options for integrating hierarchical knowledge into heuristic search: as a state evaluation heuristic, as a search-guiding heuristic and as a hierarchical search strategy. The Traveling Salesperson Problem serves as an example of a problem-solving task and the different strategies are evaluated with respect to tour length, robust-ness against misleading hierarchy assignments and acceptability of results by humans. It turns out that the most effective and stable results can be achieved with hierarchical knowledge as a search-guiding heuristic combined with other heuristics.
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https://hal.archives-ouvertes.fr/hal-01571945
Contributor : Alexandra Kirsch <>
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  • HAL Id : hal-01571945, version 1

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Alexandra Kirsch. Hierarchical Knowledge for Heuristic Problem Solving — A Case Study on the Traveling Salesperson Problem. First Annual Conference on Advances in Cognitive Systems, Dec 2012, Palo Alto, California, United States. ⟨hal-01571945⟩

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