1,721,375 research outputs found
Wilcox test and Cliff´s delta magnitude calculation for variables where <i>DEF</i> is lower.
No full textWilcox test and Cliff´s delta magnitude calculation for variables where DEF is lower.</p
Wilcox test and Cliff´s delta magnitude calculation for variables where <i>DEF</i> is greater.
No full textWilcox test and Cliff´s delta magnitude calculation for variables where DEF is greater.</p
Percentage changes in mean and effect size (Cliff s Delta) of TN and Chennai.
No full textPercentage changes in mean and effect size (Cliff s Delta) of TN and Chennai.</p
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Cliff´s Delta Calculator: A non-parametric effect size program for two groups of observations
Get PDFEl estadístico Delta de Cliff permite cuantificar la magnitud de la diferencia entre dos grupos de observaciones que resultan incompatibles con el presupuesto de normalidad. El análisis de esta cuantificación complementa la interpretación del p-valor asociado a la correspondiente prueba de hipótesis. La aplicación de medidas del tamaño del efecto ha sido promovida durante las últimas décadas tanto por metodólogos, como por instituciones líderes en las ciencias del comportamiento. El propósito de la presente contribución es presentar un programa denominado Cliff´s Delta Calculator que es capaz de calcular y graficar el valor del tamaño del efecto no paramétrico para dos grupos de observaciones. Se ofrece una comparación de este programa con otras calculadoras comerciales y no comerciales actualmente disponibles. Se describe su funcionamiento, sus fundamentos matemáticos y se presentan y discuten dos ejemplos de aplicación en la investigación psicológica. Se concluye que este programa presenta algunas ventajas en comparación con otras calculadoras comerciales disponiblesThe Cliff´s Delta statistic is an effect size measure that quantifies the amount of difference between two non-parametric variables beyond p-values interpretation. This measure can be understood as a useful complementary analysis for the corresponding hypothesis testing. During the last two decades the use of effect size measures has been strongly encouraged by methodologists and leading institutions of behavioral sciences. The aim of this contribution is to introduce the Cliff´s Delta Calculator software that performs such analysis and offers some interpretation tips. Differences and similarities with the parametric case are analysed and illustrated. The implementation of this free program is fully described and compared with other calculators. Alternative algorithmic approaches are mathematically analysed and a basic linear algebra proof of its equivalence is formally presented. Two worked examples in cognitive psychology are commented. A visual interpretation of Cliff´s Delta is suggested. Availability, installation and applications of the program are presented and discussed
Wilcox test and Cliff´s delta magnitude calculation for variables where <i>DEF</i> and <i>REF</i> were equal.
No full textWilcox test and Cliff´s delta magnitude calculation for variables where DEF and REF were equal.</p
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