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Announcements

Algorithms talk on Friday 22 July

Dear all,

The SACT seminar is back at the same time of 11am, and in the Boardroom as always. Feel free to come along!

Presentation by Andrew Santosa.

Title:
Interpolation in Dynamic Programming

Abstract:
We address the problem of effective reuse of subproblem solutions in dynamic programming. In dynamic programming, a memoed solution of a subproblem can be reused for another if the latter’s context is a special case of the former. Our objective is to generalize the context of the memoed subproblem such that more subproblems can be considered subcases and hence enhance reuse. Using a logical notion of “interpolation,” we propose a generalization of context that 1) does not add better solutions than the subproblem’s optimal, yet 2) requires that subsumed subproblems preserve the optimal solution. In addition, we also present a general technique to search for at most k>=1 optimal solutions. We provide experimental results on resource-constrained shortest path (RCSP) benchmarks.

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