Article
It aims to analyze journal self-citation in Ibero-American journals from the h5-index of theGoogle Scholar Metrics. The bibliometric tool Gsm_hdata was used to identify 4049 Ibero-American journals indexed simultaneously in Latindex and Google Scholar Metrics. Selfcitations were identified, self-citation rates by country and research area were calculated, and the h5-index was recalculated without self-citations (hs5-index). No self-citations wereidentified in almost 40% of the journals, especially those with an h5-index lower than 5. Theoverall average self-citation rate was 3.6%. Among the 1859 most cited journals with at leastone self-citation, the rate was 4.8%, lower than that of research based on the Impact Factor.Journals of Engineering, Exact and Natural Sciences, and Agricultural Sciences had the highestself-citation rates, while Social Sciences and Humanities journals presented the lowest. Journalswith excessive rates (outliers) were identified in all areas. These results suggest that the prior exclusion of journal self-citations in the calculation of the h5-index is not necessary. However, monitoring journals with excessive self-citation rates is recommended to avoid distortions in impact assessment procedures based on h5-index of Google Scholar Metrics.@en
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The bibliometric tool Gsm_hdata was used to identify 4049 Ibero-American journals indexed simultaneously in Latindex and Google Scholar Metrics. Selfcitations were identified, self-citation rates by country and research area were calculated, and the h5-index was recalculated without self-citations (hs5-index). No self-citations wereidentified in almost 40% of the journals, especially those with an h5-index lower than 5. Theoverall average self-citation rate was 3.6%. Among the 1859 most cited journals with at leastone self-citation, the rate was 4.8%, lower than that of research based on the Impact Factor.Journals of Engineering, Exact and Natural Sciences, and Agricultural Sciences had the highestself-citation rates, while Social Sciences and Humanities journals presented the lowest. Journalswith excessive rates (outliers) were identified in all areas. These results suggest that the prior exclusion of journal self-citations in the calculation of the h5-index is not necessary. However, monitoring journals with excessive self-citation rates is recommended to avoid distortions in impact assessment procedures based on h5-index of Google Scholar Metrics.] => 0 ) ) [pt] => Array ( [0] => Array ( [Este estudo analisa a autocitação de periódicos a partir do índice-h5. Foi utilizada a ferramenta bibliométrica Gsm_hdata para identificar 4049 periódicos ibérico-americanos indexados simultaneamente no Latindex e no Google Scholar Metrics. As autocitações foram identificadas, as taxas de autocitação por país e área de pesquisa foram calculadas e o índice-h5 foi recalculado sem autocitações (índice-hs5). Quase 40% dos periódicos não registraram autocitações, especialmente aqueles com índice-h5 menor que 5. A taxa média geral de autocitação foi de 3,6%. Entre os 1859 periódicos mais citados e com pelo menos uma autocitação, a taxa foi de 4,8%, taxa inferior à de pesquisas baseadas no Fator de Impacto. Periódicos de Engenharia, de Ciências Exatas e Naturais e de Ciências Agrárias apresentaram as maiores taxas de autocitação, enquanto periódicos de Ciências Sociais e Humanas as mais baixas. Periódicos com taxas excessivas (outliers) foram identificados em todas as áreas. Estes resultados sugerem que a exclusão prévia de autocitação de periódicos no cálculo do h5-índice não é necessária. No entanto, é recomendado monitorar periódicos com taxas excessivas para evitar distorções nos procedimentos de avaliação de impacto baseados no h5-índice do Google Scholar Metrics.] => 0 ) ) ) [hasID] => Array ( [nn] => Array ( [0] => Array ( [oai:ojs.periodicos.puc-campinas.edu.br:article/7318] => 0 ) ) ) [hasRegisterId] => Array ( [pt] => Array ( [0] => Array ( [https://periodicos.puc-campinas.edu.br/transinfo/article/view/7318] => 0 ) ) ) [hasSource] => Array ( [pt] => Array ( [0] => Array ( [Transinformação; Vol. 35 (2023)] => 0 ) [1] => Array ( [Transinformação; v. 35 (2023)] => 0 ) ) [nn] => Array ( [0] => Array ( [2318-0889] => 0 ) [1] => Array ( [0103-3786] => 0 ) ) ) [hasTitle] => Array ( [en] => Array ( [0] => Array ( [Journal self-citation on the h5-index of Ibero-American journals] => 0 ) ) [es] => Array ( [0] => Array ( [Autocitação de periódico no índice-h5 do Google Scholar Metrics] => 0 ) ) [pt] => Array ( [0] => Array ( [Autocitação de periódico no índice-h5 de periódicos Ibero-Americanos] => 0 ) ) ) [hasUrl] => Array ( [pt] => Array ( [0] => Array ( [https://periodicos.puc-campinas.edu.br/transinfo/article/view/7318/4884] => 0 ) ) [nn] => Array ( [0] => Array ( [https://periodicos.puc-campinas.edu.br/transinfo/article/view/7318] => 0 ) [1] => Array ( [https://periodicos.puc-campinas.edu.br/transinfo/article/view/7318/4884] => 0 ) ) ) [prefLabel] => Array ( [pt] => Array ( [0] => Array ( [Oai:ojs.periodicos.puc-campinas.edu.br:article/7318#00027] => 0 ) ) ) )