Human-like memory systems for interactive robots: Desiderata and two case studies utilizing grounded situation models and online social networking

Although rudimentary memory systems for
autonomous agents have existed for quite a while, human-like
memory systems which contain extensive episodic, social and
affective components, and which can be utilized in order to
maintain relationships with humans, have only recently started to
appear. Interactive robots are a special case of an autonomous
agent, which is physically situated, interacts with humans, and
which has sensing and motor abilities. Furthermore, social robots
might have regular encounters and interactions with other human
or non-human entities, and might maintain relationships with
them. In this paper, a set of desiderate for memory systems of
companions will be presented, together with case studies of the
memory subsystems of two existing robotic systems: first,
Ripley the Robot, an interactive manipulator robot arm with
vision, dialogue, and a sensorymotor-grounded situation model;
and second, Sarah the FaceBot, a social mobile robot with face
recognition, dialogue, as well as a social and interaction database
which is bi-directionally connected to the FaceBook website.
The case studies provide the basis for an interesting discussion
involving physical situations, self-models, expectations, and
most importantly episodic and social memories, human- or
machine- authored, internal or external, private or shared.

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