Meta-Search Through the Space of Representations and Heuristics on a Problem by Problem Basis

Raquel Fuentetaja, Michael W Barley, Daniel Borrajo, Jordan Douglas, Santiago Franco Aixela, Patricia J Riddle

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)


Two key aspects of problem solving are representation and search heuristics. Both theoretical and experimental studies have shown that there is no one best problem representation nor one best search heuristic. Therefore, some recent methods, e.g., portfolios, learn a good combination of problem solvers to be used in a given domain or set of domains. There are even dynamic portfolios that select a particular combination of problem solvers specific to a problem. These approaches: (1) need to perform a learning step; (2) do not usually focus on changing the representation of the input domain/problem; and (3) frequently do not adapt the portfolio to the specific problem. This paper describes a meta-reasoning system that searches through the space of combinations of representations and heuristics to find one suitable for optimally solving the specific problem. We show that this approach can be better than selecting
a combination to use for all problems within a domain and is competitive with state of the art optimal planners.
Original languageEnglish
Title of host publicationProceedings of the Thirty-Second AAAI Conference on Artificial Intelligence
PublisherAAAI press
Number of pages8
ISBN (Print)9781577358008, 9781577358107, 9781577358114, 9781577358121, 9781577358138, 9781577358145, 9781577357858, 9781577358169
Publication statusPublished - 26 Apr 2018
Event32nd Association for the Advancement of Artificial Intelligence Conference - Hilton New Orleans Riverside, New Orleans, United States
Duration: 2 Feb 20187 Feb 2018
Conference number: 32 (Link to Conference Details)

Publication series

NameAAAI Conference on Artificial Intelligence
ISSN (Print)2159-5399
ISSN (Electronic)2374-3468


Conference32nd Association for the Advancement of Artificial Intelligence Conference
Abbreviated titleAAAI-18
Country/TerritoryUnited States
CityNew Orleans
Internet address

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