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Home / Proceedings / Proceedings of the AAAI Conference on Artificial Intelligence

Cakewalk Sampling

February 1, 2023

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Authors

Uri Patish

Weizmann Institute of Science


Shimon Ullman

Weizmann Institute of Science


DOI:

10.1609/aaai.v34i03.5620


Abstract:

We study the task of finding good local optima in combinatorial optimization problems. Although combinatorial optimization is NP-hard in general, locally optimal solutions are frequently used in practice. Local search methods however typically converge to a limited set of optima that depend on their initialization. Sampling methods on the other hand can access any valid solution, and thus can be used either directly or alongside methods of the former type as a way for finding good local optima. Since the effectiveness of this strategy depends on the sampling distribution, we derive a robust learning algorithm that adapts sampling distributions towards good local optima of arbitrary objective functions. As a first use case, we empirically study the efficiency in which sampling methods can recover locally maximal cliques in undirected graphs. Not only do we show how our adaptive sampler outperforms related methods, we also show how it can even approach the performance of established clique algorithms. As a second use case, we consider how greedy algorithms can be combined with our adaptive sampler, and we demonstrate how this leads to superior performance in k-medoid clustering. Together, these findings suggest that our adaptive sampler can provide an effective strategy to combinatorial optimization problems that arise in practice.

Topics: AAAI

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HOW TO CITE:

Uri Patish||Shimon Ullman Cakewalk Sampling Proceedings of the AAAI Conference on Artificial Intelligence (2020) 2400-2407.

Uri Patish||Shimon Ullman Cakewalk Sampling AAAI 2020, 2400-2407.

Uri Patish||Shimon Ullman (2020). Cakewalk Sampling. Proceedings of the AAAI Conference on Artificial Intelligence, 2400-2407.

Uri Patish||Shimon Ullman. Cakewalk Sampling. Proceedings of the AAAI Conference on Artificial Intelligence 2020 p.2400-2407.

Uri Patish||Shimon Ullman. 2020. Cakewalk Sampling. "Proceedings of the AAAI Conference on Artificial Intelligence". 2400-2407.

Uri Patish||Shimon Ullman. (2020) "Cakewalk Sampling", Proceedings of the AAAI Conference on Artificial Intelligence, p.2400-2407

Uri Patish||Shimon Ullman, "Cakewalk Sampling", AAAI, p.2400-2407, 2020.

Uri Patish||Shimon Ullman. "Cakewalk Sampling". Proceedings of the AAAI Conference on Artificial Intelligence, 2020, p.2400-2407.

Uri Patish||Shimon Ullman. "Cakewalk Sampling". Proceedings of the AAAI Conference on Artificial Intelligence, (2020): 2400-2407.

Uri Patish||Shimon Ullman. Cakewalk Sampling. AAAI[Internet]. 2020[cited 2023]; 2400-2407.


ISSN: 2374-3468


Published by AAAI Press, Palo Alto, California USA
Copyright 2022, Association for the Advancement of
Artificial Intelligence 1900 Embarcadero Road, Suite
101, Palo Alto, California 94303 All Rights Reserved

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