Dynamic Backtracking
Open Access
- 1 August 1993
- journal article
- Published by AI Access Foundation in Journal of Artificial Intelligence Research
- Vol. 1 (1) , 25-46
- https://doi.org/10.1613/jair.1
Abstract
Because of their occasional need to return to shallow points in a search tree, existing backtracking methods can sometimes erase meaningful progress toward solving a search problem. In this paper, we present a method by which backtrack points can be moved deeper in the search space, thereby avoiding this difficulty. The technique developed is a variant of dependency-directed backtracking that uses only polynomial space while still providing useful control information and retaining the completeness guarantees provided by earlier approaches.Keywords
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