activity
20132023
most citedGoogle Scholar, Web of Science, and Scopus: a systematic comparison of citations in 252 subject categories

2k citations · 4k across the 40 of their papers we have counts for

collaborators

43 papers

cs.DL2023★ 6 cited

Research assessment under debate: disentangling the interest around the DORA declaration on Twitter

E. Orduna-Malea, N. Bautista-Puig

Much debate has been around the misapplication of metrics in research assessment. As a result of this concern, the Declaration on Research Assessment (DORA) was launched, an initia…

cs.DL2023★ 2 cited

A scientometric-inspired framework to analyze EurekAlert! press releases

Enrique Orduna-Malea, Rodrigo Costas

Press releases about scholarly news are brief statements provided in advance to the press, including a description of the most relevant findings of one or more accepted scientific…

cs.DL2022

Measuring web connectivity between research organizations through ROR identifiers

Enrique Orduna-Malea, Nuria Bautista-Puig

Digital information needs to be accessed and used in a manageable and sustainable manner to facilitate the advancement of science and science management. Many types of Persistent I…

cs.DL2021★ 7 cited

Dot-Science Top Level Domain: academic websites or dumpsites?

Enrique Orduna-Malea

Dot-science was launched in 2015 as a new academic top-level domain (TLD) aimed to provide 'a dedicated, easily accessible location for global Internet users with an interest in sc…

cs.DL2020★ 21 cited

Universities through the Eyes of Bibliographic Databases: A Retroactive Growth Comparison of Google Scholar, Scopus and Web of Science

Enrique Orduna-Malea, Selenay Aytac, Clara Y. Tran

The purpose of this study is to ascertain the suitability of GS's url-based method as a valid approximation of universities' academic output measures, taking into account three asp…

cs.DL2020★ 2 cited

Crossing the Academic Ocean? Judit Bar-Ilan's Oeuvre on Search Engines studies

Enrique Orduna-Malea

The main objective of this work is to analyse the contributions of Judit Bar-Ilan to the search engines studies. To do this, two complementary approaches have been carried out. Fir…

cs.DL2020★ 1k cited

Google Scholar, Microsoft Academic, Scopus, Dimensions, Web of Science, and OpenCitations' COCI: a multidisciplinary comparison of coverage via citations

Alberto Martín-Martín, Mike Thelwall, Enrique Orduna-Malea +1

New sources of citation data have recently become available, such as Microsoft Academic, Dimensions, and the OpenCitations Index of CrossRef open DOI-to-DOI citations (COCI). Altho…

cs.DL2018★ 21 cited

Do the technical universities exhibit distinct behaviour in global university rankings? A Times Higher Education (THE) case study

Carmen Perez-Esparrells, Enrique Orduna-Malea

Technical Universities (TUs) exhibit a distinct ranking performance in comparison with other universities. In this paper we identify 137 TUs included in the THE Ranking (2017 editi…

cs.DL2018★ 2k cited

Google Scholar, Web of Science, and Scopus: a systematic comparison of citations in 252 subject categories

Alberto Martín-Martín, Enrique Orduna-Malea, Mike Thelwall +1

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 rec…

cs.DL2018

Google Scholar as a data source for research assessment

Emilio Delgado López-Cózar, Enrique Orduna-Malea, Alberto Martín-Martín

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…

cs.DL2018

Google Scholar: the 'big data' bibliographic tool

Emilio Delgado Lopez-Cozar, Enrique Orduna-Malea, Alberto Martin-Martin +1

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, unparalle…

cs.DL2018★ 32 cited

A novel method for depicting academic disciplines through Google Scholar Citations: The case of Bibliometrics

Alberto Martín-Martín, Enrique Orduna-Malea, Emilio Delgado López-Cózar

This article describes a procedure to generate a snapshot of the structure of a specific scientific community and their outputs based on the information available in Google Scholar…

cs.DL2018★ 185 cited

Can we use Google Scholar to identify highly-cited documents?

Alberto Martín-Martín, Enrique Orduna-Malea, Anne-Wil Harzing +1

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 carrie…

cs.DL2018★ 17 cited

The lost academic home: institutional affiliation links in Google Scholar Citations

Enrique Orduña-Malea, Juan M. Ayllón, Alberto Martín-Martín +1

This paper analyzes the new affiliation feature available in Google-Scholar Citations revealing that the affiliation-tool works well for most-institutions, it is unable to detect a…

cs.DL2018★ 47 cited

Author-level metrics in the new academic profile platforms: The online behaviour of the Bibliometrics community

Alberto Martín-Martín, Enrique Orduna-Malea, Emilio Delgado López-Cózar

The new web-based academic communication platforms do not only enable researchers to better advertise their academic outputs, making them more visible than ever before, but they al…

cs.DL2018★ 58 cited

Dimensions: re-discovering the ecosystem of scientific information

Enrique Orduna-Malea, Emilio Delgado Lopez-Cozar

The overarching aim of this work is to provide a detailed description of the free version of Dimensions (new bibliographic database produced by Digital Science and launched in Janu…

cs.DL2018★ 195 cited

Coverage of highly-cited documents in Google Scholar, Web of Science, and Scopus: a multidisciplinary comparison

Alberto Martín-Martín, Enrique Orduna-Malea, 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…

cs.DL2017

Classic papers: déjà vu, a step further in the bibliometric exploitation of Google Scholar

Emilio Delgado Lopez-Cozar, Alberto Martin-Martin, Enrique Oduna-Malea

After giving a brief overview of Eugene Garfield contributions to the issue of identifying and studying the most cited scientific articles, manifested in the creation of his Citati…

cs.SI2017★ 74 cited

Do ResearchGate Scores create ghost academic reputations?

Enrique Orduna-Malea, Alberto Martin-Martin, Mike Thelwall +1

The academic social network site ResearchGate (RG) has its own indicator, RG Score, for its members. The high profile nature of the site means that the RG score may be used for rec…

cs.DL2017★ 3 cited

Google Scholar and the gray literature: A reply to Bonato's review

Enrique Orduna-Malea, Alberto Martin-Martin, Emilio Delgado Lopez-Cozar

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…

cs.DL2016★ 3 cited

2016 Google Scholar Metrics released: a matter of languages... and something else

Alberto Martín-Martín, Juan Manuel Ayllón, Enrique Orduña-Malea +1

The 2016 edition of Google Scholar Metrics was released on July 15th 2016. There haven't been any structural changes respect to previous versions, which means that most of its limi…

cs.DL2016★ 23 cited

A two-sided academic landscape: portrait of highly-cited documents in Google Scholar (1950-2013)

Alberto Martin-Martin, Enrique Orduna-Malea, Juan M. Ayllon +1

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 availab…

cs.DL2016★ 3 cited

Proceedings Scholar Metrics: H Index of proceedings on Computer Science, Electrical & Electronic Engineering, and Communications according to Google Scholar Metrics (2010-2014)

Alberto Martín-Martín, Juan Manuel Ayllón, Enrique Orduña-Malea +1

The objective of this report is to present a list of proceedings (conferences, workshops, symposia, meetings) in the areas of Computer Science, Electrical & Electronic Engineering,…

cs.DL2016★ 29 cited

Back to the past: on the shoulders of an academic search engine giant

Alberto Martin-Martin, Enrique Orduna-Malea, Juan M. Ayllon +1

A study released by the Google Scholar team found an apparently increasing fraction of citations to old articles from studies published in the last 24 years (1990-2013). To demonst…