A search engine supports error correction in the following way: If an error is suspected in a query term, the system provides a link labeled “Did you mean X?”, where X is the corrected term, in addition to its normal results. The link leads to a list of retrieved documents, corresponding to a variant of the original query, with X replacing the misspelled term. a) Explain why it is non-trivial to implement this feature efficiently. b) Discuss methods for implementing this feature in a realistic setting.
A search engine supports error correction in the following way: If an error is suspected in a query term, the system provides a link labeled “Did you mean X?”, where X is the corrected term, in addition to its normal results. The link leads to a list of retrieved documents, corresponding to a variant of the original query, with X replacing the misspelled term. a) Explain why it is non-trivial to implement this feature efficiently. b) Discuss methods for implementing this feature in a realistic setting.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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A search engine supports error correction in the following way: If an error is suspected in a query term, the system provides a link labeled “Did you mean X?”, where X is the corrected term, in addition to its normal results. The link leads to a list of retrieved documents, corresponding to a variant of the original query, with X replacing the misspelled term.
a) Explain why it is non-trivial to implement this feature efficiently.
b) Discuss methods for implementing this feature in a realistic setting.
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