PPT Slide

Information Retrieval Techniques

• Back-propagation

Solves the problem of calculating relevance of an object that is pointed

to by some other object

Advantages:

- significantly improves effectiveness of the classification

- does not require any form of semantic analysis (language independent)

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O O’ O’’

A:v A:v·f A:v·f·f

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back-propagation

back-propagation

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