1,722,891 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
An Analysis of a 17th Century Conceptual Dictionary with an Alphabetical List of Entries and a Network Definition Structure. John Wilkins’ and William Lloyd’s "An Alphabetical Dictionary" (1668)
No full textThis contribution is focused on a 17th-century lexicographic work. Its structural organisation and its theoretical foundations are important for research both in lexicography and in the theories and applications of knowledge organisation. "An Alphabetical Dictionary" is appended to "An Essay Towards a Real Character and a Philosophical Language" by John Wilkins. Its lexical definitions ultimately depend on a hierarchical-relational conceptual scheme contained in the main body of the text.
In the overall work the procedures of lexical analysis – used to disambiguate meanings and senses of English words – merge with those developed for defining concepts, which are seen as universally shared. Conceptual definitions are based on a method of analysis and representation that is identified with a classificatory scheme which reflects the organisation of knowledge.
Hence, the text under consideration combines lexicographic practice with speculation on the methodology for describing and representing concepts, i.e. knowledge units. This convergence is concretely represented by the interrelation of the two sections of this work. This feature is crucial in Wilkins’ text and is the main object of analysis in the present article. In point of fact, the latter intends to contribute to the studies on the Essay by approaching it from a novel perspective, as the previous literature on this subject is mainly focused on either one or the other of the two components of Wilkins’ conceptual and semantic theory, but which are, however, closely interrelated.
In the second section ("Looking up in the 'Alphabetical Dictionary' and the 'Philosophical Tables'") dictionary lemmas are used as examples to describe the method of definition proposed by the author and the mutual relation between the two parts of the Essay, which is also highlighted by direct and indirect cross-references described here. The third part of the article ("The network of semantic relations in the 'Essay'") is devoted to the scrutiny of the semantic and conceptual relations identified by Wilkins as the tools that allow a definition of the units of knowledge gathered in the hierarchical-relational scheme developed in the main body of his text. In the first subsection ("Main distinguishing features"), there is a discussion of the type of relations that the author considers to be functional for defining the concepts ordered in the hierarchical-relational scheme. In the second subsection ("The wider relational network"), two relevant aspects are analysed: first, the method used by the author to organise concepts on the basis of their distinguishing features, so that their distribution in the scheme also enhances their definition; and second, the method developed by Wilkins for disambiguating the meanings and senses of the lexemes indexed in the "Alphabetical Dictionary".
The present study aims at contributing to the scrutiny of Wilkins’ work by highlighting its importance both within the English lexicographic tradition and the speculation on conceptual definition and representation, which started within the domain of logic and philosophy and later developed within inter- and cross-disciplinary studies on the organisation of knowledge, a trend still current today
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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