Hierarchical Task Models
Hierarchical Task Models is a formal task analysis framework that decomposes complex user activities into structured, multi-level subtasks arranged in a top-down refinement hierarchy, distinguishing itself from flat task models by explicitly representing task–subtask relationships and procedural dependencies.
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17.2K
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908
Authors
412
Institutions
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2017–2026
90
Variants
Hierarchical Task Analysis ModelsHtm
Parents
310
Representations in Distributed Cognitive Tasks
Jiaje Zhang, Donald A. Norman · Cognitive Science · 1994 · 1.1K citations · Full text
HTN planning: complexity and expressivity
Kutluhan Erol, James Hendler, Dana Nau · 1994 · 621 citations
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University of Maryland, College Park
College Park, United States
15 h-index
33 publications
5.3K citations

Lehigh University
Bethlehem, United States
10 h-index
14 publications
626 citations
University of Southampton
Southampton, United Kingdom
8 h-index
15 publications
378 citations

Imperial College London
London, United Kingdom
7 h-index
19 publications
624 citations
Carnegie Mellon University
Pittsburgh, United States
6 h-index
8 publications
214 citations
Smart Information Flow Technologies (United States)
Minneapolis, United States
6 h-index
7 publications
544 citations
University College London
London, United Kingdom
6 h-index
11 publications
280 citations

United States Naval Research Laboratory
Washington, United States
6 h-index
11 publications
369 citations
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10 publications · 422 citations
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Conference · 5 publications · 169 citations
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