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3.4.3: Term Weighting

Document vectors have been invented to give terms weights according to their importance for a document. Issues are:

Methods:

Intellectual methods are expensive and not very reliable.

Two kinds of influence can be distinguished in weighting methods: local or context sensitive influences and global or context insensitive influences

ZUGANG3.4.3.1: Local Weighting Strategies

ZUGANG3.4.3.2: Word Frequencies in Language

ZUGANG3.4.3.3: Global Weighting Strategies

Global and local strategies can be combined:


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