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An index (pl.: usually indexes, more rarely indices) is a list of words or phrases ('headings') and associated pointers ('locators') to where useful material relating to that heading can be found in a document or collection of documents. Examples are an index in the back matter of a book and an index that serves as a library catalog.
The following is a list of the codes for MeSH (Medical Subject Headings), a comprehensive controlled vocabulary for the purpose of indexing journal articles and books in the life sciences. It is a product of the United States National Library of Medicine (NLM).
Indexers trying to choose the appropriate index terms might misinterpret the author, while this precise problem is not a factor in a free text, as it uses the author's own words. The use of controlled vocabularies can be costly compared to free text searches because human experts or expensive automated systems are necessary to index each entry.
The following index is provided as an overview of and topical guide to science: Links to articles and redirects to sections of articles which provide information on each topic are listed with a short description of the topic. When there is more than one article with information on a topic, the most relevant is usually listed, and it may be ...
The index terms were mostly assigned by experts but author keywords are also common. The process of indexing begins with any analysis of the subject of the document. The indexer must then identify terms which appropriately identify the subject either by extracting words directly from the document or assigning words from a controlled vocabulary. [1]
Medical Subject Headings (MeSH) is a comprehensive controlled vocabulary for the purpose of indexing journal articles and books in the life sciences.It serves as a thesaurus of index terms that facilitates searching.
Index terms can consist of a word, phrase, or alphanumerical term. They are created by analyzing the document either manually with subject indexing or automatically with automatic indexing or more sophisticated methods of keyword extraction. Index terms can either come from a controlled vocabulary or be freely assigned.
List of American words not widely used in the United Kingdom; List of British words not widely used in the United States; List of South African English regionalisms; List of words having different meanings in American and British English: A–L; List of words having different meanings in American and British English: M–Z