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Preface for Special Section on Integrated Cognitive Architectures

Over the years, AI has divided itself into many subfields corresponding roughly to different components of intelligence such as planning, knowledge representation, learning, vision, robotics, natural language, and interaction with other agents. Although this division has allowed the field to make progress in understanding each of these components, it often ignores the issues involved in creating integrated systems that draw from more than one of these subfields. SHRDLU was an early example of the integration of planning and natural language, but in general we find ourselves with individual capabilities that are not integrated within a complete system.