Accession Number:

ADA445810

Title:

Semantics for Hierarchical Task-Network Planning

Descriptive Note:

Technical research rept.

Corporate Author:

MARYLAND UNIV COLLEGE PARK INST FOR SYSTEMS RESEARCH

Report Date:

1995-01-01

Pagination or Media Count:

30.0

Abstract:

One big obstacle to understanding the nature of hierarchical task network HTN planning has been the lack of a clear theoretical framework. In particular, no one has yet presented a clear and concise HTN algorithm that is sound and complete. In this paper, the authors present a formal syntax and semantics for HTN planning. Based on this syntax and semantics, they are able to define an algorithm for HTN planning and prove that it is sound and complete. They also develop several definitions of expressivity for planning languages and prove that HTN planning is strictly more expressive than STRIPS-style planning according to those definitions.

Subject Categories:

  • Computer Programming and Software
  • Cybernetics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE