1,720,979 research outputs found
Rational Rewriting
No full textIn this paper we introduced rational rewriting to rewrite infinite rational terms as finitely represented by mgrterms. The main advantage of this approach is that it deals with infinite terms by retaining most of the results and tools for finite rewriting avoiding the use of infinitary machinery. The obvious disadvantage is that we can only deal with rational terms. Nevertheless there are significant applications concerning rational terms. In these settings we believe that our approach can be a valid alternative to infinite rewriting. For example, we can define relations among mgrterms. Rules like mgrx.g(x) rarr mgry.f(x) or mgrx.g(x) rarr c, cannot be expressed in the infinite rewriting approaches. Though our setting lacks expressivity, it is more flexible since mgrterms are first class citizens. The other consequence of working in a finitary framework is that we can deal with TRSs that do not need to have the restrictions, like left-linearity or orthogonality, that are necessary to guarantee the ohgr-convergency of the non terminating relations
Some Results on the Modelling of Spatial Data
No full text@proceedings{DBLP:conf/sofsem/1998,
editor = {Branislav Rovan},
title = {SOFSEM '98: Theory and Practice of Informatics, 25th Conference
on Current Trends in Theory and Practice of Informatics, Jasn{'a},
Slovakia, November 21-27, 1998, Proceedings},
booktitle = {SOFSEM},
publisher = {Springer},
series = {Lecture Notes in Computer Science},
volume = {1521},
year = {1998},
isbn = {3-540-65260-4},
bibsource = {DBLP, http://dblp.uni-trier.de}
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
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