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Monday, July 26, 2010

Declerative Representation.

DECLARATIVE REPRESNTATIONS


The following are the four declarative mechanisms, used for representing knowledge:

(a) Semantic Nets: - These describe both objects and events in general

(b) Conceptual Dependency:- Provides a way of representing relationships among components of an action.

© Frames:- A general structure to represent complex objects from several different points of view.

(d) Scripts: A sophisticated structure use to represent common sequence of events.

All these structures share a common notion that complex entities can be describe as a collection of attributes and associated values (hence they are often called “slot-and –filter structures”) ie., these structures have the form of ordered triples

OBJECTS x ATTRIBUTES x VALUE

Information can be retrieved from the knowledge base by an associative search with VALUE.

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