Academic search engines : a quantitative outlook by Jose Luis Ortega

By Jose Luis Ortega

Academic se's: intends to run throughout the present landscape of the educational se's via a quantitative method that analyses the reliability and consistence of those prone. the target is to explain the most features of those engines, to focus on their merits and downsides, and to debate the consequences of those new items sooner or later of clinical communique and their influence at the learn size and review. briefly, educational se's provides a precis view of the hot demanding situations that the net set to the clinical task during the so much novel and leading edge looking out providers on hand on the internet.

  • This is the 1st method of study se's completely addressed to the examine neighborhood in an integrative instruction manual. the newness, expectation and usability of lots of those prone justify their analysis.
  • This ebook isn't really basically an outline of the net functionalities of those providers; it's a medical assessment of the main notable features of every platform, discussing their importance to the scholarly communique and learn evaluation.
  • This ebook introduces an unique method in keeping with a quantitative research of the coated info throughout the large use of crawlers and harvesters which enable stepping into intensity into how those engines are operating. Beside of this, an in depth descriptive evaluate in their functionalities and a severe dialogue approximately their use for clinical neighborhood is displayed.

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9 per cent) compared to the rest of the world. 00 In addition to this huge number of web pages, Scirus also included a group of outstanding web resources which did not merely include web pages but also elaborated scientific documents such as research articles, pre-prints, reports or patent records. Perhaps these selected sites compensated for the heterogeneous and imprecise group of web pages. 5 million documents). 31 Academic Search Engines ‘Journal sources’ corresponded to the online publishing platforms of the world’s principal scientific publishers, such as ScienceDirect (Elsevier), SpingerLink (Springer) or Wiley Online Library (Wiley), although it also included information services other than publishers’ web platforms.

If the user is not logged in, it shows the main search page where authors can be sought by free text. This will be examined in detail in the Profiles section. ƒ ‘Rank’: this function displays a ranking of personal profiles according to several bibliometric indicators, some of them defined ad hoc by AMiner and obtained from the structural analysis of collaboration patterns. This ranking shows 1,253,433 profiles, organized by the following indicators: h-index, g-index, #paper, citation, diversity, sociability, new star, rising star and activity.

2 Database provider Institutional repository Thematic repository Bibliographic database Contents distribution by source type in ‘Preferred web sources’ section 35 Academic Search Engines Because Scirus did not show the entire distribution of documents by subject classification, in July 2013 a symbolic query “a” delimited by each subject class was carried out. It is interesting to note that the sum of all the classes totalled 165 million documents. However, when a query selecting all the disciplines was launched, Scirus retrieved 556 million documents.

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