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This document discusses indexing techniques used to improve information retrieval from large databases. It covers how index size increases with database size and techniques to compress indexes, including representing repetitive document numbers in binary. Two types of document numbers - compressible and non-compressible - are discussed. The document also outlines how search engines build and maintain indexes, including dictionary building, document partitioning, and challenges around speed, size, and cost.
- Author
- AshwinReader
- Language
- EN