knowledge representation

Knowledge Sources
?Documented (books, manuals, etc.)
?Undocumented (in people s minds)
–From people, from machines
?Knowledge Acquisition from Databases
?Knowledge Acquisition Via the Internet
Major Categories of Knowledge
?Declarative Knowledge
?Procedural Knowledge
?Metaknowledge
Declarative Knowledge
Descriptive Representation of Knowledge
?Expressed in a factual statement
?Shallow
?Important in the initial stage of knowledge acquisition
Procedural Knowledge
?Considers the manner in which things work under different sets of circumstances
–Includes step-by-step sequences and how-to types of instructions
–May also include explanations
–Involves automatic response to stimuli
–May tell how to use declarative knowledge and how to make inferences
?Descriptive knowledge relates to a specific object. Includes information about the meaning, roles, environment, resources, activities, associations and outcomes of the object
?Procedural knowledge relates to the procedures employed in the problem-solving process