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Query processing e cises • Exercise: If the query is friends AND romans AND (NOT countrymen), how could we use the freq of countrymen? Exercise: Extend the merge to an arbitrary Boolean query. Can we always guarantee execution in time linear in the total postings size? • Hint: Begin with the case of a Boolean formula query: in this, each query term appears only once in the query.

Query processing e cises • Exercise: If the query is friends AND romans AND (NOT countrymen), how could we use the freq of countrymen? Exercise: Extend the merge to an arbitrary Boolean query. Can we always guarantee execution in time linear in the total postings size? • Hint: Begin with the case of a Boolean formula query: in this, each query term appears only once in the query.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Query processing e cises • Exercise: If the query is friends AND romans AND (NOT countrymen), how could we use the freg of countrymen? • Exercise: Extend the merge to an arbitrary Boolean query. Can we always guarantee execution in time linear in the total postings size? • Hint: Begin with the case of a Boolean formula query: in this, each query term appears only once in the query.
Transcribed Image Text:Query processing e cises • Exercise: If the query is friends AND romans AND (NOT countrymen), how could we use the freg of countrymen? • Exercise: Extend the merge to an arbitrary Boolean query. Can we always guarantee execution in time linear in the total postings size? • Hint: Begin with the case of a Boolean formula query: in this, each query term appears only once in the query.
Query processing e cises • Exercise: If the query is friends AND romans AND (NOT countrymen), how could we use the freg of countrymen? • Exercise: Extend the merge to an arbitrary Boolean query. Can we always guarantee execution in time linear in the total postings size? • Hint: Begin with the case of a Boolean formula query: in this, each query term appears only once in the query.
Transcribed Image Text:Query processing e cises • Exercise: If the query is friends AND romans AND (NOT countrymen), how could we use the freg of countrymen? • Exercise: Extend the merge to an arbitrary Boolean query. Can we always guarantee execution in time linear in the total postings size? • Hint: Begin with the case of a Boolean formula query: in this, each query term appears only once in the query.
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