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RDATE:20321107T010000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 TZNAME:America/New_York EDT END:DAYLIGHT BEGIN:DAYLIGHT DTSTART:20330313T030000 RDATE:20331106T010000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 TZNAME:America/New_York EDT END:DAYLIGHT BEGIN:DAYLIGHT DTSTART:20340312T030000 RDATE:20341105T010000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 TZNAME:America/New_York EDT END:DAYLIGHT BEGIN:DAYLIGHT DTSTART:20350311T030000 RDATE:20351104T010000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 TZNAME:America/New_York EDT END:DAYLIGHT BEGIN:DAYLIGHT DTSTART:20360309T030000 RDATE:20361102T010000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 TZNAME:America/New_York EDT END:DAYLIGHT BEGIN:DAYLIGHT DTSTART:20370308T030000 RDATE:20371101T010000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 TZNAME:America/New_York EDT END:DAYLIGHT END:VTIMEZONE BEGIN:VEVENT UID:a41bf050febbfd6f118e6856c77d0d6d CATEGORIES:Human and computer vision series:Spring 2012 CREATED:20151203T141543 SUMMARY:Bayesian Social Inference: Modeling Human Reasoning about Beliefs, Desires, Goals, and Social Relations LOCATION:MIT\, Brain and Cognitive Sciences DESCRIPTION:I will present a computational framework for understanding human Theory of Mind (ToM): our conception of others' mental states and their relation to t he world and behavior. ToM supports behavioral prediction, but also mental state inference: attribution of the beliefs, desires, knowledge and other t houghts that explain observed behavior. It also allows us to leverage obser vations of others' actions to learn about the world. At the heart of the pr oposed framework is an intuitive theory of intentional agency: a causal mod el of how agents' beliefs, desires and goals interact with situations to pr oduce behavior. This intuitive theory of (inter)action is formalized using partially observable Markov decision processes and Markov games. Social rea soning is cast as Bayesian inference over models of intentional action, rec onstructing the mental states that give rise to behavior. I will describe s everal behavioral experiments which presented human subjects with trajector ies of agents moving in simple spatial contexts and collected human inferen ces about agents' beliefs, desires, goals, and social intentions toward oth er agents. For example, in an experiment inspired by classic false-belief t ests of theory of mind, people performed joint inference of agents' beliefs and desires, given their actions in a partially observable environment. In another experiment, people learned the location of hidden food sources by observing the trajectory of an agent with a known preference function. In t hese experiments, theory-based Bayesian models predict human social inferen ces substantially better than simpler variants or alternative models based on the analysis of low-level motion features. \n X-ALT-DESC;FMTTYPE=text/html:
I will present a computational framework for understanding human Theory of Mind (ToM): our conception of others' mental states and their relation t o the world and behavior. ToM supports behavioral prediction, but also ment al state inference: attribution of the beliefs, desires, knowledge and othe r thoughts that explain observed behavior. It also allows us to leverage ob servations of others' actions to learn about the world. At the heart of the proposed framework is an intuitive theory of intentional agency: a causal model of how agents' beliefs, desires and goals interact with situations to produce behavior. This intuitive theory of (inter)action is formalized usi ng partially observable Markov decision processes and Markov games. Social reasoning is cast as Bayesian inference over models of intentional action, reconstructing the mental states that give rise to behavior. I will describ e several behavioral experiments which presented human subjects with trajec tories of agents moving in simple spatial contexts and collected human infe rences about agents' beliefs, desires, goals, and social intentions toward other agents. For example, in an experiment inspired by classic false-belie f tests of theory of mind, people performed joint inference of agents' beli efs and desires, given their actions in a partially observable environment. In another experiment, people learned the location of hidden food sources by observing the trajectory of an agent with a known preference function. I n these experiments, theory-based Bayesian models predict human social infe rences substantially better than simpler variants or alternative models bas ed on the analysis of low-level motion features.
CONTACT:Chris Baker X-EXTRAINFO:Chris Baker (http://web.mit.edu/clbaker/www/) DTSTAMP:20240329T075638 DTSTART;TZID=America/New_York:20120213T120000 DTEND;TZID=America/New_York:20120213T190000 SEQUENCE:0 TRANSP:OPAQUE END:VEVENT END:VCALENDAR