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Home / Proceedings / Proceedings of the International Conference on Automated Planning and Scheduling, 27 / Book One

The Two-Edged Nature of Diverse Action Costs

February 1, 2023

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Authors

Gaojian Fan,Martin Müller,Robert Holte

University of Alberta,University of Alberta,University of Alberta


DOI:

10.1609/icaps.v27i1.13804


Abstract:

Diverse action costs are an essential feature of many real-world planning applications. Some recent studies have shown that diversity of action costs makes planning more difficult, and that searching using unit action costs can outperform searching the same domain with diverse action costs. In this paper, we provide experimental evidence and theoretical analysis showing that search can also benefit from action cost diversity. We show that on several IPC problems cost diversity has a positive effect (reduces search effort). We then present a theoretical analysis establishing that these positive cases are not accidental. Our main result is a "No Free Lunch" theorem showing that any negative effects of cost diversity are always perfectly counterbalanced by positive effects. Our theoretical analysis also shows that it is advantageous to have a strongly concentrated distribution of solution costs. In many domains, unit costs will give rise to a more concentrated distribution than diverse costs, but we give an example typifying domains in which the opposite is the case.

Topics: ICAPS

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HOW TO CITE:

Gaojian Fan,Martin Müller,Robert Holte The Two-Edged Nature of Diverse Action Costs Proceedings of the International Conference on Automated Planning and Scheduling, 27 (2017) 98-106.

Gaojian Fan,Martin Müller,Robert Holte The Two-Edged Nature of Diverse Action Costs ICAPS 2017, 98-106.

Gaojian Fan,Martin Müller,Robert Holte (2017). The Two-Edged Nature of Diverse Action Costs. Proceedings of the International Conference on Automated Planning and Scheduling, 27, 98-106.

Gaojian Fan,Martin Müller,Robert Holte. The Two-Edged Nature of Diverse Action Costs. Proceedings of the International Conference on Automated Planning and Scheduling, 27 2017 p.98-106.

Gaojian Fan,Martin Müller,Robert Holte. 2017. The Two-Edged Nature of Diverse Action Costs. "Proceedings of the International Conference on Automated Planning and Scheduling, 27". 98-106.

Gaojian Fan,Martin Müller,Robert Holte. (2017) "The Two-Edged Nature of Diverse Action Costs", Proceedings of the International Conference on Automated Planning and Scheduling, 27, p.98-106

Gaojian Fan,Martin Müller,Robert Holte, "The Two-Edged Nature of Diverse Action Costs", ICAPS, p.98-106, 2017.

Gaojian Fan,Martin Müller,Robert Holte. "The Two-Edged Nature of Diverse Action Costs". Proceedings of the International Conference on Automated Planning and Scheduling, 27, 2017, p.98-106.

Gaojian Fan,Martin Müller,Robert Holte. "The Two-Edged Nature of Diverse Action Costs". Proceedings of the International Conference on Automated Planning and Scheduling, 27, (2017): 98-106.

Gaojian Fan,Martin Müller,Robert Holte. The Two-Edged Nature of Diverse Action Costs. ICAPS[Internet]. 2017[cited 2023]; 98-106.


ISSN: 2334-0843


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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