(15th-March-2020)
The previous sections assumed that an agent has some belief state that it maintains through time. For an intelligent agent, the belief state can be very complex, even for a single layer. Experience in studying and building intelligent agents has shown that an intelligent agent requires some internal representation of its belief state. Knowledge is the information about a domain that is used for solving problems in that domain. Knowledge can include general knowledge that can be applied to particular situations. Thus, it is more general than the beliefs about a specific state. A knowledge-based system is a system that uses knowledge about a domain to act or to solve problems.
Offline and Online decomposition of Agent is shown as following.
It shows a refinement of previous figure for a knowledge-based agent. A knowledge base is built offline and is used online to produce actions. This decomposition of an agent is orthogonal to the layered view of an agent; an intelligent agent requires both hierarchical organization and knowledge bases.
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