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Search-Based Applications by Laura Wilber, Gregory Grefenstette

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CHAPTER 8

Data Security, Usability, Performance, Cost

At A Glance

Characteristic

Search Engine

Databases

Security

Weak

High

Usability

High

Low

Data volume

Billion of records

Millions of records

Response time

Sub-second

Seconds, minutes or even hours

Number of users

Unlimited

Limited

Cost of ownership

Low per user

High per user

8.1    SEARCH ENGINES

Conventional Web search engines score extremely high on usability, performance and per-user cost. They were natively designed for highly scalable, distributed computing environments, and are optimized for read (access) operations. They are also user-friendly IR systems, having well demonstrated their capacity to provide timely access to billions of documents by millions of users around ...

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