Download Academic search engines : a quantitative outlook by Jose Luis Ortega PDF

By Jose Luis Ortega

Academic se's: intends to run throughout the present landscape of the tutorial se's via a quantitative method that analyses the reliability and consistence of those companies. the target is to explain the most features of those engines, to focus on their merits and disadvantages, and to debate the consequences of those new items sooner or later of medical communique and their impression at the learn dimension and evaluate. briefly, educational se's provides a precis view of the recent demanding situations that the internet set to the medical task during the so much novel and cutting edge looking providers to be had on the internet.

  • This is the 1st method of study se's solely addressed to the examine neighborhood in an integrative instruction manual. the newness, expectation and value of a lot of those providers justify their analysis.
  • This ebook isn't really in basic terms an outline of the internet functionalities of those prone; it's a clinical assessment of the main notable features of every platform, discussing their value to the scholarly conversation and learn evaluation.
  • This publication introduces an unique method in accordance with a quantitative research of the lined information in the course of the wide use of crawlers and harvesters which permit getting into intensity into how those engines are operating. Beside of this, a close descriptive overview in their functionalities and a severe dialogue approximately their use for clinical neighborhood is displayed.

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1). 1). However, this distribution did not give a precise definition of the web sources because national domains were not specified and top-level domains only corresponded with the American web. Thus, one had to suppose that the rest of the world’s university sites were included in the ‘Other STM and academic sites’ category due to the very high number of sources in this section. 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.

In fact, its principal functionality – autonomous citation indexing – shows serious deficiencies because the citation count differs from one view of the (same) document to another. All of this advises against the use of CiteSeerx for bibliometric studies and throws doubt on the citation values and rankings produced by the search engine. This could be the reason why bibliometric analyses from CiteSeerx are few in number (Fiala, 2011). As we will see with other autonomous citation indexing systems, their principal drawback is that developments often led to a loss of consistency in the parsing process, and they needed to develop well-defined cleaning processes that solved the malfunctions of these automatic systems.

1). However, this distribution did not give a precise definition of the web sources because national domains were not specified and top-level domains only corresponded with the American web. Thus, one had to suppose that the rest of the world’s university sites were included in the ‘Other STM and academic sites’ category due to the very high number of sources in this section. 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.

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