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Gal A. Kaminka,
Mor Vered, and Noa Agmon. Plan-Recognition as Planning in Continuous
and Discrete Domains. In IJCAI Workshop on Goal Reasoning, 2017. A much improved version was published in the
AAAI 2018 conference.
(unavailable)
Plan recognition is the task of inferring the plan of an agent, based on an incomplete sequence of its observed actions. Previous formulations of plan recognition commit early to discretizations of the environment and the observed agent's actions. This leads to reduced recognition accuracy. To address this, we first provide a formalization of recognition problems which admits continuous environments, as well as discrete domains. We then show that through mirroring---generalizing plan-recognition by planning---we can apply continuous-world motion planners in plan recognition. We provide formal arguments for the usefulness of mirroring, and empirically evaluate mirroring in more than a thousand recognition problems in three continuous domains and six classical planning domains.
@inproceedings{goalreason17ws,
author = {Gal A. Kaminka and Mor Vered and Noa Agmon},
title = {Plan-Recognition as Planning in Continuous and Discrete Domains},
booktitle = {{IJCAI} Workshop on Goal Reasoning},
OPTcrossref = {crossref},
OPTkey = {key},
OPTpages = {pages},
year = {2017},
OPTeditor = {editor},
OPTvolume = {volume},
OPTnumber = {number},
OPTseries = {series},
OPTaddress = {address},
OPTmonth = {month},
OPTorganization = {organization},
OPTpublisher = {publisher},
note = {A much improved version was published in the AAAI 2018 conference.},
OPTannote = {annote},
wwwnote = {},
OPTkeywords = {},
abstract = {
Plan recognition is the task of inferring the plan of an agent, based
on an incomplete sequence of its observed actions. Previous formulations of plan recognition commit early to discretizations of the environment and the observed
agent's actions. This leads to reduced recognition accuracy.
To address this, we first provide a formalization of recognition
problems which admits continuous environments, as well as discrete domains.
We then show that through \textit{mirroring}---generalizing plan-recognition by planning---we
can apply continuous-world motion planners in plan recognition. We provide formal arguments
for the usefulness of mirroring, and empirically evaluate
mirroring in more than a thousand recognition problems
in three continuous domains and six classical planning domains.
},
}
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