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Home / Proceedings / Proceedings of the AAAI Conference on Artificial Intelligence, 33 / No. 1: AAAI-19, IAAI-19, EAAI-20

An Improved Generic Bet-and-Run Strategy with Performance Prediction for Stochastic Local Search

February 1, 2023

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Authors

Thomas Weise

Hefei University


Zijun Wu

Hefei University


Markus Wagner

The University of Adelaide


DOI:

10.1609/aaai.v33i01.33012395


Abstract:

A commonly used strategy for improving optimization algorithms is to restart the algorithm when it is believed to be trapped in an inferior part of the search space. Building on the recent success of BET-AND-RUN approaches for restarted local search solvers, we introduce a more generic version that makes use of performance prediction. It is our goal to obtain the best possible results within a given time budget t using a given black-box optimization algorithm. If no prior knowledge about problem features and algorithm behavior is available, the question about how to use the time budget most efficiently arises. We first start k ≥ 1 independent runs of the algorithm during an initialization budget t1 < t, pause these runs, then apply a decision maker D to choose 1 ≤ m < k runs from them (consuming t2 ≥ 0 time units in doing so), and then continue these runs for the remaining t3 = t−t1−t2 time units. In previous BET-AND-RUN strategies, the decision maker D = currentBest would simply select the run with the best-so-far results at negligible time. We propose using more advanced methods to discriminate between “good” and “bad” sample runs with the goal of increasing the correlation of the chosen run with the a-posteriori best one. In over 157 million experiments, we test different approaches to predict which run may yield the best results if granted the remaining budget. We show (1) that the currentBest method is indeed a very reliable and robust baseline approach, and (2) that our approach can yield better results than the previous methods.

Topics: AAAI

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HOW TO CITE:

Thomas Weise||Zijun Wu||Markus Wagner An Improved Generic Bet-and-Run Strategy with Performance Prediction for Stochastic Local Search Proceedings of the AAAI Conference on Artificial Intelligence (2019) 2395-2402.

Thomas Weise||Zijun Wu||Markus Wagner An Improved Generic Bet-and-Run Strategy with Performance Prediction for Stochastic Local Search AAAI 2019, 2395-2402.

Thomas Weise||Zijun Wu||Markus Wagner (2019). An Improved Generic Bet-and-Run Strategy with Performance Prediction for Stochastic Local Search. Proceedings of the AAAI Conference on Artificial Intelligence, 2395-2402.

Thomas Weise||Zijun Wu||Markus Wagner. An Improved Generic Bet-and-Run Strategy with Performance Prediction for Stochastic Local Search. Proceedings of the AAAI Conference on Artificial Intelligence 2019 p.2395-2402.

Thomas Weise||Zijun Wu||Markus Wagner. 2019. An Improved Generic Bet-and-Run Strategy with Performance Prediction for Stochastic Local Search. "Proceedings of the AAAI Conference on Artificial Intelligence". 2395-2402.

Thomas Weise||Zijun Wu||Markus Wagner. (2019) "An Improved Generic Bet-and-Run Strategy with Performance Prediction for Stochastic Local Search", Proceedings of the AAAI Conference on Artificial Intelligence, p.2395-2402

Thomas Weise||Zijun Wu||Markus Wagner, "An Improved Generic Bet-and-Run Strategy with Performance Prediction for Stochastic Local Search", AAAI, p.2395-2402, 2019.

Thomas Weise||Zijun Wu||Markus Wagner. "An Improved Generic Bet-and-Run Strategy with Performance Prediction for Stochastic Local Search". Proceedings of the AAAI Conference on Artificial Intelligence, 2019, p.2395-2402.

Thomas Weise||Zijun Wu||Markus Wagner. "An Improved Generic Bet-and-Run Strategy with Performance Prediction for Stochastic Local Search". Proceedings of the AAAI Conference on Artificial Intelligence, (2019): 2395-2402.

Thomas Weise||Zijun Wu||Markus Wagner. An Improved Generic Bet-and-Run Strategy with Performance Prediction for Stochastic Local Search. AAAI[Internet]. 2019[cited 2023]; 2395-2402.


ISSN: 2374-3468


Published by AAAI Press, Palo Alto, California USA
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