Question

Which of the following is the best definition of a token in an information retrieval system?...

Which of the following is the best definition of a token in an information retrieval system?

- A movie or show recommendation generated by Netflix’s machine learning algorithm

- An algorithm that ranks documents

- A users query

- An entry in the index that represents a document characteristic

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Answer #1

An entry in the index that represents a document characteristic

A token is an instance of a sequence of characters

Tokens are sequences of alphanumeric characters separated by nonalphanumeric characters. The tokens are case normalized by converting uppercase letters to lowercase

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