Plan recognition, activity recognition, and intent recognition all
involve making inferences about other actors from observations of
their behavior, i.e., their interaction with the environment and with
each other. The observed actors may be software agents, robots, or
humans. This synergistic area of research combines and unifies
techniques from user modeling, machine vision, intelligent user
interfaces, human/computer interaction, autonomous and multi-agent
systems, natural language understanding, and machine learning. It
plays a crucial role in a wide variety of applications including:

- smart homes
- personal agent assistants
- opponent modeling in games and simulation systems
- computer and network security
- coordination in robots and software agents
- video surveillance
- dialog modeling

This workshop seeks to bring together researchers and practitioners
from diverse backgrounds, to share in ideas and recent results.
The theme of this year's workshop will be relating plan recognition
to models of human cognition; we especially hope to draw invitees
from the cognitive science community. It will aim to identify
important research directions and to identify opportunities for
synthesis and unification. Contributions are sought in the following
areas of research:

* Plan, activity, intent, or behavior recognition
* Machine learning for plan recognition and user modeling
* Proactive assistant agents
* Adversarial planning, opponent modeling
* Modeling multiple agents, modeling teams
* User modeling on the web and in intelligent user interfaces
* Intelligent tutoring systems (ITS)
* Social network learning and analysis
* Observation-based failure detection
* Uncertainty reasoning for plan recognition
* Modeling social interactions
* Inferring emotional states
* Programming by demonstration
* Human activity recognition for smart homes
* Commercial applications of user modeling and plan recognition
* Cognitive models of intent recognition

Due to the diversity of disciplines engaging in this area,
related contributions in other fields, are also welcome.

Format:
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The workshop will be split 50/50 between a series of research
presentations, organized into topical sessions (topics to be decided
based on submissions) and two interdisciplinary panels 1) seeking to
highlight research contributions and challenges unifying the different
sub-areas, and 2) to discuss the relevance of multiple approaches to
different sub-areas to better understand the actual differences
between the sub-areas and problems needing more focus.

Submission:
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Submissions are accepted in PDF format only, using the AAAI formatting
guidelines. Submissions must be no longer than eight pages in length,
including references and figures. Please submit via EasyChair at:
https://www.easychair.org/conferences/?conf=pair2011

Organizing Committee
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(Co-chairs)
gitars@eecs.ucf.edu [Primary contact] (Gita Sukthankar, University of Central Florida)
cgeib@inf.ed.ac.uk (Christopher Geib, Univ. of Edinburgh)
pynadath@isi.edu (David Pynadath, ISI)
bui@ai.sri.com (Hung Bui, SRI)

Important Dates
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Submission deadline: April 22, 2011
* Notification date: May 13, 2011
* Author accepted paper submission deadline: May 27, 2011
* Workshop: Aug 7 or 8, 2011