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Creating Relationships with Computers and Robots                   9

                                In chapter 12 David Pynadath and Milind Tambe report their experience
                              in using a system of electronic assistants, in particular focusing on teams of
                              agents operating in a real-world human organization. Their experience lead
                              them to abandon a decision tree approach and instead adopt a more adaptive
                              model that reasons about the uncertainty, costs, and constraints of decisions.
                              They call this approach adjustable autonomy because the agents take into ac-
                              count the potential bad consequences of their action when deciding to take
                              independent action, much as an employee might check critical decisions with
                              her boss. The resulting system now assists their research group in reschedul-
                              ing meetings, choosing presenters, tracking people’s locations, and ordering
                              meals.
                                Edmund Chattoe is a sociologist who uses agent-based computational sim-
                              ulation as a tool. In chapter 13 he argues that rather than basing the design of
                              our agent systems upon a priori design principles (e.g. from philosophy) we
                              should put considerable effort into collecting information on human society.
                              He argues that one factor hindering realization of the potential of MAS (multi-
                              agent systems) for social understanding is the neglect of systematic data use
                              and appropriate data collection techniques. He illustrates this with the exam-
                              ple of innovation diffusion and concludes by pointing out the advantages of
                              MAS as a tool for understanding social processes.

                                The following 20 chapters can be thematically grouped into five sections
                              which describe how Socially Intelligent Agents are being implemented and
                              used in a wide range of practical applications. This part shows how Socially
                              Intelligent Agents can contribute to areas where social interactions with hu-
                              mans are a necessary (if not essential) element in the commercial success and
                              acceptance of an agent system. The chapters describe SIA systems that are
                              used for a variety of different purposes, namely as therapeutic systems (section
                              2.4), as physical instantiations of social agents, namely social robots (section
                              2.5), as systems applied in education and training (section 2.6), as artifacts
                              used in games and entertainment (section 2.7), and for applications used in
                              e-commerce (section 2.8).

                              2.4     Interactive Therapeutic Agent Systems

                                Interactive computer systems are increasingly used in therapeutic contexts.
                              Many therapy methods are very time- and labor-extensive. Computer soft-
                              ware can provide tools that allow children and adults likewise to learn at their
                              own pace, in this way taking some load off therapists and parents, in partic-
                              ular with regard to repetitive teaching sessions. Computer technology is gen-
                              erally very ‘patient’ and can easily repeat the same tasks and situations over
                              and over again, while interaction and learning histories can be monitored and
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