#GOOGLE SCHOLAR DATABASE HOW TO#

#GOOGLE SCHOLAR DATABASE HOW TO#

'It's not complete, but a very good coverage,' Giles says.ДЄnother puzzle is how to gauge the quality of Google Scholar's citation statistics (the number of times a paper is cited by other authors). Lee Giles of Pennsylvania State University, University Park, which estimated the size of Google Scholar at 100 million documents, suggested that it covers about 88% of all scholarly documents accessible on the Web in English. One is: What proportion of all scholarly documents is covered by Google Scholar? A previous study by computer scientists Madian Khabsa and C. The study is very 'thorough and creative work,' says bibliometricist Henk Moed, a visiting professor at Sapienza University of Rome and a former senior scientific adviser at Elsevier, who was not involved with the research.Д«y itself, however, the number doesn't answer some other questions important to academics. The number: 160 million indexed documents (plus or minus 10%), including journal articles, books, case law, and patents. Although each method has distinct limitations, all but one yield similar results, the researchers report in a study posted to the arXiv preprint server earlier this year and updated this month. To come up with a tally, bibliometricist Enrique OrduГ±a-Malea of the Polytechnic University of Valencia in Spain and his colleagues used four different methods to estimate Google Scholar's total number of documents. Google Scholar, however, offers no such tools to bibliometric researchers, and the Web search giant has declined to publish the information. Microsoft Academic Search is similarly transparent. And some scholars warn the service may be inflating citation counts, although that may not necessarily be a bad thing.ДЇiguring out how many documents are indexed in traditional bibliographic databases, such as Thomson Reuters's Web of Science and Elsevier's Scopus, is a piece of cake-a simple query is all it takes. But figuring out exactly how many papers are covered by Google Scholar isn't easy, recent research shows-in part because of the company's secretive, tightlipped nature. The powerful academic search engine seems to comb through every academic study in existence. When it comes to searching for scientific literature, Google Scholar has become a go-to resource for a growing number of researchers.

Google scholar database