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Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines. . Released in beta in November 2004, the Google Scholar index includes peer-reviewed online academic journals and books, conference papers, theses and dissertations, preprints, abstracts, technical reports, and other ...
Google Scholar: Multidisciplinary: 389,000,000 The biggest academic database & search engine (over 390 million records, unofficial estimate) Free Google: Informit: Multidisciplinary: 8,000,000 Australasian aggregator of bibliographic databases and journals Subscription RMIT Training Pty Ltd (RMIT Training) Inspec: Physics, Engineering, Computer ...
The search engine indexed over 260 million publications, 88 million of which are journal articles. [5] Preliminary reviews by bibliometricians suggested the new Microsoft Academic Search was a competitor to Google Scholar , Web of Science , and Scopus for academic research purposes [6] [7] as well as citation analysis.
Semantic Scholar is free to use and unlike similar search engines (i.e. Google Scholar) does not search for material that is behind a paywall. [5] [ citation needed ] One study compared the index scope of Semantic Scholar to Google Scholar, and found that for the papers cited by secondary studies in computer science, the two indices had ...
Documents that are not indexed by search engines create what is known as the deep Web, or invisible Web. Google Scholar is one example of many projects trying to address this, by indexing electronic documents that search engines ignore. And the metasearch approach, like the underlying search engine technology, only works with information ...
Some engines suggest queries when the user is typing in the search box. A search engine is a software system that provides hyperlinks to web pages and other relevant information on the Web in response to a user's query. The user inputs a query within a web browser or a mobile app, and the search results are often a list of hyperlinks ...
Google Dataset Search. Google Dataset Search is a search engine from Google that helps researchers locate online data that is freely available for use. [1] The company launched the service on September 5, 2018, and stated that the product was targeted at scientists and data journalists. The service was out of beta as of January 23, 2020.
The Chemistry Citation Index was first introduced by Eugene Garfield, a chemist by training. His original "search examples were based on [his] experience as a chemist". In 1992, an electronic and print form of the index was derived from a core of 330 chemistry journals, within which all areas were covered.