By Bjorn N. Freeman-Benson, John Maloney, Alan Borning
Communications of the ACM,
January 1990,
Vol. 33 No. 1, Pages 54-63
10.1145/76372.77531
Comments
An incremental constraint solver, the DeltaBlue algorithm maintains an evolving solution to the constraint hierarchy as constraints are added and removed. DeltaBlue minimizes the cost of finding a new solution after each change by exploiting its knowledge of the last solution.
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