subject index

(information science)An information resource that containsreferences to other resources, categorised by subject, usuallyin a hierarchy.

Yahoo is the most popular Internet subject index. Likemost other subject indices,Yahoo is arranged ontologically.

Subject indices are not to be confused with search engines,which are based not on subject, but instead on relevance,although (1) this difference is often (possibly rightly)hidden from the unsophisticated user, and (2) futureintegration of knowledge representation into relevanceranking algorithms will make this a hazy distinction.

单词	subject index
释义	subject index Translations subject index subject index (information science)An information resource that containsreferences to other resources, categorised by subject, usuallyin a hierarchy. Yahoo is the most popular Internet subject index. Likemost other subject indices,Yahoo is arranged ontologically. Subject indices are not to be confused with search engines,which are based not on subject, but instead on relevance,although (1) this difference is often (possibly rightly)hidden from the unsophisticated user, and (2) futureintegration of knowledge representation into relevanceranking algorithms will make this a hazy distinction.
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