Search results for 'G. C. Avena' (try it on Scholar)

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  1. C. Ricotta & G. C. Avena (2002). On the Information-Theoretical Meaning of Hill's Parametric Evenness. Acta Biotheoretica 50 (1).score: 290.0
    The degree to which abundances are divided equitably among community species or evenness is a basic property of any biological community. Several evenness indices have been proposed to summarize community structure. However, despite their potential applicability in ecological research, none seems to be generally preferred. In this paper we show that, unlike other evenness indices without any clear information-theoretical meaning, Hill's parametric diversity measure E ,0 has an immediate relation to Rényi's generalized information. Therefore, E ,0 might be adequate for (...)
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  2. C. Ricotta & G. C. Avena (2003). An Information-Theoretical Measure of Taxonomic Diversity. Acta Biotheoretica 51 (1).score: 290.0
    Traditional diversity indices are computed from the abundances of species present and are insensitive to taxonomic differences between species. However, a community in which most species belong to the same genus is intuitively less diverse than another community with a similar number of species distributed more evenly between genera. In this paper, we propose an information-theoretical measure of taxonomic diversity that reflects both the abundances and taxonomic distinctness of the species. Unlike previous measures of taxonomic diversity, such as Rao's quadratic (...)
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