Call for Papers: *AAAI Spring 2009 Symposium on Human Behavior Modeling* March 23-25, 2009 Stanford University http://www.aaai.org/Symposia/Spring/sss09symposia.php#ss04 The *AAAI 2009 Spring Symposium on Human Behavior Modeling* will explore methods for creating models of individual and group behavior from data. * Models include generative and discriminative statistical models, relational models, and social network models * Data includes low-level sensor data (GPS, RFID, accelerometers, physiological measures, etc.), video, speech, and text * Behaviors include high-level descriptions of purposeful and meaningful activity or abstractions of cognitive and affective states. These include activities of daily living (e.g., preparing a meal), interaction between small sets of individuals (e.g., having a conversation), mass behavior of groups (e.g. the flow of traffic in a city) and related internal user states. While behavior modeling is part of many research communities, such as intelligent user interfaces, machine vision, smart homes for aging in place, discourse understanding, social network analysis, and others, this workshop will be distinguished by its emphasis on exploring general representations and reasoning methods that can apply across many different domains. We welcome the following types of contributed presentations: *Papers*: The symposium agenda will include oral and poster presentations. We seek papers that collectively span the range of human behavior modeling -- from individuals to groups to societies -- using a variety of different computational techniques and data sources. The deadline for submitting a paper (6 pages AAAI format) is October 3, 2008. *Panels*: In addition, we will have moderated panels and open discussions to encourage brainstorming, and to specifically identify grand challenge problems that could serve as a focal point for research efforts and innovation, and would provide a context in which to compare different methodologies and tools. Those interested in leading a panel should send in a two-page panel proposal by October 3, 2008. Please email name and affiliation of all panelists. *Doctoral Thesis Position Papers*: To encourage graduate student participation, we also invite advanced PhD student to submit thesis position paper (6 pages, AAAI format) by the submission deadline (October 3, 2008). Email all submissions to aaai_ss09_hbm@cs.dartmouth.edu. Submissions will be judged on their technical merit and the potential to generate discussion and collaborations. Participation in the symposium is open to all. Since AAAI limits symposium attendance between 40-60, persons interested in the symposium without contributing a paper or a panel are required to send email by January 31, 2009 to reserve a spot. * Important dates* October 3, 2008: Papers and doctoral thesis position papers due November 7, 2008: Notifications of acceptances mailed out January 14, 2009: Camera ready paper due January 31, 2009: Intention to participate for those not contributing a paper February 27, 2009: Registration deadline March 23-25, 2009: Spring Symposium Series, Stanford University