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The paper discusses and analyzes the scientific search service Google Scholar (GS). The focus is on an exploratory study which investigates the coverage of scientific serials in GS. The study shows deficiencies in the coverage and…

数字图书馆 · 计算机科学 2019-01-15 Philipp Mayr , Anne-Kathrin Walter

The main objective of this paper is to identify the set of highly-cited documents in Google Scholar and to define their core characteristics (document types, language, free availability, source providers, and number of versions), under the…

数字图书馆 · 计算机科学 2016-12-28 Alberto Martin-Martin , Enrique Orduna-Malea , Juan M. Ayllon , Emilio Delgado Lopez-Cozar

The launch of Google Scholar (GS) marked the beginning of a revolution in the scientific information market. This search engine, unlike traditional databases, automatically indexes information from the academic web. Its ease of use,…

数字图书馆 · 计算机科学 2018-06-19 Emilio Delgado López-Cózar , Enrique Orduna-Malea , Alberto Martín-Martín

Recently, a review concluded that Google Scholar (GS) is not a suitable source of information "for identifying recent conference papers or other gray literature publications". The goal of this letter is to demonstrate that GS can be an…

数字图书馆 · 计算机科学 2017-02-15 Enrique Orduna-Malea , Alberto Martin-Martin , Emilio Delgado Lopez-Cozar

This article uses Google Scholar (GS) as a source of data to analyse Open Access (OA) levels across all countries and fields of research. All articles and reviews with a DOI and published in 2009 or 2014 and covered by the three main…

数字图书馆 · 计算机科学 2018-07-26 Alberto Martín-Martín , Rodrigo Costas , Thed van Leeuwen , Emilio Delgado López-Cózar

This study explores the extent to which bibliometric indicators based on counts of highly-cited documents could be affected by the choice of data source. The initial hypothesis is that databases that rely on journal selection criteria for…

数字图书馆 · 计算机科学 2018-11-20 Alberto Martín-Martín , Enrique Orduna-Malea , Emilio Delgado López-Cózar

A new methodology is proposed for comparing Google Scholar (GS) with other citation indexes. It focuses on the coverage and citation impact of sources, indexing speed, and data quality, including the effect of duplicate citation counts. The…

数字图书馆 · 计算机科学 2016-05-03 Henk F. Moed , Judit Bar-Ilan , Gali Halevi

The launch of Google Scholar back in 2004 meant a revolution not only in the scientific information search market but also in research evaluation processes. Its dynamism, unparalleled coverage, and uncontrolled indexing make of Google…

数字图书馆 · 计算机科学 2018-06-19 Emilio Delgado Lopez-Cozar , Enrique Orduna-Malea , Alberto Martin-Martin , Juan M. Ayllon

The emergence of academic search engines (mainly Google Scholar and Microsoft Academic Search) that aspire to index the entirety of current academic knowledge has revived and increased interest in the size of the academic web. The main…

数字图书馆 · 计算机科学 2015-06-10 Enrique Orduna-Malea , Juan M. Ayllon , Alberto Martin-Martin , Emilio Delgado Lopez-Cozar

The emergence of academic search engines (Google Scholar and Microsoft Academic Search essentially) has revived and increased the interest in the size of the academic web, since their aspiration is to index the entirety of current academic…

The study of highly cited documents on Google Scholar (GS) has never been addressed to date in a comprehensive manner. The objective of this work is to identify the set of highly cited documents in Google Scholar and define their core…

The main objective of this paper is to empirically test whether the identification of highly-cited documents through Google Scholar is feasible and reliable. To this end, we carried out a longitudinal analysis (1950 to 2013), running a…

Academic institutions, federal agencies, publishers, editors, authors, and librarians increasingly rely on citation analysis for making hiring, promotion, tenure, funding, and/or reviewer and journal evaluation and selection decisions. The…

数字图书馆 · 计算机科学 2007-05-23 Lokman I. Meho , Kiduk Yang

Since repositories are a key tool in making scholarly knowledge open access, determining their presence and impact on the Web is essential, particularly in Google (search engine par excellence) and Google Scholar (a tool increasingly used…

数字图书馆 · 计算机科学 2014-06-18 Enrique Orduña-Malea , Emilio Delgado Lopez-Cozar

Unlike other academic bibliographic databases, Google Scholar intentionally operates in a way that does not maintain coverage stability: documents that stop being available to Google Scholar's crawlers are removed from the system. This can…

数字图书馆 · 计算机科学 2021-02-16 Alberto Martín-Martín , Emilio Delgado López-Cózar

Google Scholar has been well received by the research community. Its promises of free, universal and easy access to scientific literature as well as the perception that it covers better than other traditional multidisciplinary databases the…

数字图书馆 · 计算机科学 2017-10-17 Emilio Delgado López-Cózar , Nicolás Robinson-Garcia , Daniel Torres-Salinas

The aim of this paper is to review the features, benefits and limitations of the new scientific evaluation products derived from Google Scholar; Google Scholar Metrics and Google Scholar Citations, as well as the h-index which is the…

数字图书馆 · 计算机科学 2013-04-09 Alvaro Cabezas-Clavijo , Emilio Delgado Lopez-Cozar

Google Scholar is a vital tool for engineering scholars, enabling efficient literature searches and facilitating academic dissemination. Elsevier, as one of the largest publishers of engineering journals, produces essential research that…

数字图书馆 · 计算机科学 2025-03-10 Shi-Shun Chen

Academic codes associated with research papers are valuable resources for scholars. In specialized fields outside computer science, code availability is often limited, making effective code retrieval essential. Google Scholar is a crucial…

数字图书馆 · 计算机科学 2025-03-04 Shi-Shun Chen

Despite citation counts from Google Scholar (GS), Web of Science (WoS), and Scopus being widely consulted by researchers and sometimes used in research evaluations, there is no recent or systematic evidence about the differences between…

数字图书馆 · 计算机科学 2019-03-14 Alberto Martín-Martín , Enrique Orduna-Malea , Mike Thelwall , Emilio Delgado López-Cózar
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