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Search-Based Applications by Laura Wilber, Gregory Grefenstette

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CHAPTER 3

Origins and Histories

At A Glance

Characteristic

Search Engine

Databases

Origin

Web

Enterprise

Primary Usage

Information retrieval

Transaction processing

Target content

Unstructured text

Structured data

Number of users

Unlimited

Limited

Data volume

Billions of records

Thousands/millions of records

3.1    SEARCH ENGINES

The best known search engine today is Google, but research into search engines that could rank documents relevant to a query began in the late 1950s with Cyril Cleverdon’s Cranfield studies [Cleverdon and Mills, 1963], Margaret Masterman and her team at the Cambridge Language Research Unit [Masterman et al., 1958], and Gerald Salton’s SMART system [Salton, 1971]. Arising from the world of library science ...

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