“Semantic” is a word with a magic ring to it in search engine circles.
The way it’s hyped makes you suspect it is the second coming of
search. Now the time has come for the semantic search engines.
semantic search engines use all the elements in use today plus Latent
semantic Indexing.Latent semantic Indexing is a well-defined
mathematical method, which uses pure mathematics to create the
semantic cohesion between documents and collections of documents.
Some of the semantic search engines are:
1.Hakia http://www.hakia.com/
2.SenseBot http://www.sensebot.net/
3.Powerset http://www.powerset.com/
4.DeepDyve http://www.deepdyve.com/
5.Cognition http://www.cognition.com/
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