The instructible agent Lokutor

Abstract

In this paper we describe Lokutor, a virtual human. Lokutor is a partially autonomous agent, inhabiting a 3D virtual environment. The agent can be controlled via natural language directives of the user and by direct manipulation using a graphical user interface. Its control system consists of a behavior-based reactive layer, a deliberative control layer and a motivational subsystem. Lokutor’s domain knowledge, its behavior modules and its communicative behavior is encoded in an integrated multimodal format, which has been implemented using XML. Currently Lokutor is used to present information about a car.