For the purposes of this article, the author is defining semantic search as a search, a question, or a click that produces meaningful results, especially when the retrieved items do not contain any of the query terms or the search involves no query text at all. Think of it this way: With traditional search, you retrieve the information you searched for, which may not be the information you were actually looking for. Taking the long view, semantic search is what librarians have been after for as long as the profession has existed. Searching for meaning and meaningful answers is as old as searching for food, safety, and company. During the past decade, the Internet and Web search engines revolutionized the way people look for and find information worldwide. The recent Web 2.0 social content, tagging, folksonomies, and communities represent content creation, indexing, cataloging, classification, and semantic searching of the people, by the people, and for the people.
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