Admin at 20:13, 1 October 2009

2009-10-01T20:13:52Z

Admin: Created page with 'An '''index term, subject term, subject heading, or descriptor''' that captures the ''essence of the topic of a document''. ==Relation to Marketing== For [[marketing profession…'

2009-10-01T20:13:38Z

Created page with 'An '''index term, subject term, subject heading, or descriptor''' that captures the ''essence of the topic of a document''. ==Relation to Marketing== For [[marketing profession…'

New page

An '''index term, subject term, subject heading, or descriptor''' that captures the ''essence of the topic of a document''.

==Relation to Marketing==
For [[marketing professional]]s, '''Keywords''' are the ''currency'' of the trade, particularly when related to [[Pay-Per-Click]] marketing.

Most [[Pay-Per-Click]] [[Search Engines]] allow bidding on '''Keywords''' to receive paid traffic. The ''bid'' is the amount, [[CPC|per click]], that a marketer is willing to spend on a '''Keyword''' in order to have their advertisement displayed on a page where that '''Keyword''' was searched for.

==General Uses==

'''Keywords''' make up a controlled vocabulary for use in '''bibliographic records''', and in [[Search Engine]]s. They are used as keywords to retrieve documents in an '''information system''', for instance, a catalog or a [[Search Engine|search engine]].

A popular form of keywords on the web are tags which are directly visible and can be assigned by non-experts also.

'''Keywords''' can consist of a word, phrase, or alphanumerical term. They are created by analyzing a document (in this case, a [[web page]]) either manually with subject indexing or automatically with automatic indexing or more sophisticated methods of keyword extraction. '''Keywords''' can either come from a controlled vocabulary or be freely assigned.

Keywords are stored in a [[Search Engine Index|search index]]. Common words like ''articles'' (a, an, the) and ''conjunctions'' (and, or, but) are not treated as '''keywords''' because it is inefficient to do so. Almost every English-language site on the Internet has the article "the", and so it makes no sense to search for it.

The most popular [[Search Engine]], Google, removed stop words such as "the" and "a" from its indexes for several years, but then re-introduced them, making certain types of precise search possible again.

The term "descriptor" was coined by Calvin Mooers in 1948.

==References==
This article was based on the [http://en.wikipedia.org/wiki/Index_term Wikipedia definition for Index term].

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Keyword - Revision history

Admin at 20:13, 1 October 2009

Admin: Created page with 'An '''index term, subject term, subject heading, or descriptor''' that captures the ''essence of the topic of a document''. ==Relation to Marketing== For [[marketing profession…'