392 research outputs found

    The SJR indicator: A new indicator of journals' scientific prestige

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    This paper proposes an indicator of journals' scientific prestige, the SJR indicator, for ranking scholarly journals based on citation weighting schemes and eigenvector centrality to be used in complex and heterogeneous citation networks such Scopus. Its computation methodology is described and the results after implementing the indicator over Scopus 2007 dataset are compared to an ad-hoc Journal Impact Factor both generally and inside specific scientific areas. The results showed that SJR indicator and JIF distributions fitted well to a power law distribution and that both metrics were strongly correlated, although there were also major changes in rank. There was an observable general trend that might indicate that SJR indicator values decreased certain JIF values whose citedeness was greater than would correspond to their scientific influence.Comment: 21 pages with graphs and table

    Perspectives around the cognitive model for the information retrieval: a critical analysis / Enfoques en torno al modelo cognitivo para la recuperación de información: análisis crítico

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    The traditional or algorithmic model of information retrievalhas evolved into the cognitive model. From the latter, differentproposals for practical implementation have arisen being the most remarkable ones those labelled by their own authors asGlobal Model of Polirepresentation, Episodic Model, StratifiedModel and Model of Interactive Feedback. These are criticallydescribed and analysed in this paper
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