Expected Performance of m-Solution Backtracking
نویسندگان
چکیده
منابع مشابه
Expected Performance of M-solution Backtracking Nl\si\ National Aeronautics and Space Administration
This paper derives upper bounds on the expected number of search tree nodes visited during an m-solution backtracking search, a search which terminates after some pre-selected number m problem solutions are found. The search behavior is assumed to have a general probabilistic structure. Our results are stated in terms of node expansion and contraction. A visited search tree node is said to be e...
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Consider an infinite binary search tree in which the branches have independent random costs. Suppose that we must find an optimal (cheapest) or nearly optimal path from the root to a node at depth n. Karp and Pearl [1983] show that a bounded-lookahead backtracking algorithm A2 usually finds a nearly optimal path in linear expected time (when the costs take only the values 0 or 1). From this suc...
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ژورنال
عنوان ژورنال: SIAM Journal on Computing
سال: 1988
ISSN: 0097-5397,1095-7111
DOI: 10.1137/0217008