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  2. Citation index - Wikipedia

    en.wikipedia.org/wiki/Citation_index

    Comparison with subject-specific indexes has further revealed the geographical and topic bias – for example Ciarli [25] found that by comparing the coverage of rice research in CAB Abstracts (an agriculture and global health database) with WoS and Scopus, the latter "may strongly under-represent the scientific production by developing ...

  3. Index (statistics) - Wikipedia

    en.wikipedia.org/wiki/Index_(statistics)

    In statistics and research design, an index is a composite statistic – a measure of changes in a representative group of individual data points, or in other words, a compound measure that aggregates multiple indicators. [1] [2] Indices – also known as indexes and composite indicators – summarize and rank specific observations. [2]

  4. List of academic databases and search engines - Wikipedia

    en.wikipedia.org/wiki/List_of_academic_databases...

    A gateway to results of DOE research and development and major R&D accomplishments of interest to DOE. Not working from 2014 Free DOE: Sparrho: Multidisciplinary: Research articles and patents from 45k+ journals and preprint servers. Uses content recommendation concept. Subscription Distylled Ltd.

  5. Subject indexing - Wikipedia

    en.wikipedia.org/wiki/Subject_indexing

    For example, the term glucose is likely to occur frequently in any document related to diabetes. Therefore, use of this term would likely return most or all the documents in the database. Post-coordinated indexing where terms are combined at the time of searching would reduce this effect but the onus would be on the searcher to link appropriate ...

  6. Bibliographic index - Wikipedia

    en.wikipedia.org/wiki/Bibliographic_index

    A bibliographic index is a bibliography intended to help find a publication. Citations are usually listed by author and subject in separate sections, or in a single alphabetical sequence under a system of authorized headings collectively known as controlled vocabulary , developed over time by the indexing service. [ 1 ]

  7. Index term - Wikipedia

    en.wikipedia.org/wiki/Index_term

    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.

  8. Composite measure - Wikipedia

    en.wikipedia.org/wiki/Composite_measure

    Composite measure in statistics and research design refer to composite measures of variables, i.e. measurements based on multiple data items. [1] An example of a composite measure is an IQ test, which gives a single score based on a series of responses to various questions. Three common composite measures include:

  9. Indexing and abstracting service - Wikipedia

    en.wikipedia.org/wiki/Indexing_and_abstracting...

    The word indexing service is today mostly used for computer programs, but may also cover services providing back-of-the-book indexes, journal indexes, and related kinds of indexes. [2] An indexing and abstracting service is a service that provides shortening or summarizing of documents and assigning of descriptors for referencing documents. [3]