Information Theory

Authored by: Paul B. Kantor

Encyclopedia of Library and Information Science, Fourth Edition

Print publication date:  November  2017
Online publication date:  November  2017

Print ISBN: 9781466552593
eBook ISBN: 9781315116143
Adobe ISBN:

10.1081/E-ELIS4-120043262

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Abstract

Information theory “measures quantity of information” and is that branch of applied mathematics that deals with the efficient transmission of messages in an encoded language. It is fundamental to modern methods of telecommunication, image compression, and security. Its relation to library information science is less direct. More relevant to the LIS conception of “quantity of information” are economic concepts related to the expected value of a decision, and the influence of imperfect information on that expected value.

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