1,722,152 research outputs found
Deterministic Approximate Counting of Polynomial Threshold Functions via a Derandomized Regularity Lemma
Full text linkWe study the problem of deterministically approximating the number of satisfying assignments of a polynomial threshold function (PTF) over Boolean space. We present and analyze a scheme for transforming such algorithms for PTFs over Gaussian space into algorithms for the more challenging and more standard setting of Boolean space. Applying this transformation to existing algorithms for Gaussian space leads to new algorithms for Boolean space that improve on prior state-of-the-art results due to Meka and Zuckerman [Meka and Zuckerman, 2013] and Kane [Kane, 2012]. Our approach is based on a bias-preserving derandomization of Meka and Zuckerman’s regularity lemma for polynomials [Meka and Zuckerman, 2013] using the [Rocco A. Servedio and Li-Yang Tan, 2018] pseudorandom generator for PTFs
La representación de la migración de Centroamérica a los EEUU en el film La jaula de oro, de Diego Quemada Díez
No full textThe Representation of Migration from Central America to the USA in the Film “La jaula de
oro”, by Diego Quemada-Díez
Diego Quemada Díez’s movie “La jaula de oro” is based on numerous testimonies which
have been put together in over six years of close survey. It is the story of four Latin-American
adolescents moving across Mexico, trying to realize their dream of reaching the U.S. The
research analyses the empathic cohesion developing among the characters vis-á-vis the
crudeness of the events they meet, thus underlying and denouncing the horror of such situation.
At the same time the research analyses the symbolic elements pointing to a poetic reception
of the story
La representación de la migración de Centroamérica a los EEUU en el film La jaula de oro, de Diego Quemada Díez
No full textThe Representation of Migration from Central America to the USA in the Film “La jaula de
oro”, by Diego Quemada-Díez
Diego Quemada Díez’s movie “La jaula de oro” is based on numerous testimonies which
have been put together in over six years of close survey. It is the story of four Latin-American
adolescents moving across Mexico, trying to realize their dream of reaching the U.S. The
research analyses the empathic cohesion developing among the characters vis-á-vis the
crudeness of the events they meet, thus underlying and denouncing the horror of such situation.
At the same time the research analyses the symbolic elements pointing to a poetic reception
of the story
El sueño de dirigir una película. Noticias sobre los proyectos de José Revueltas como realizador
No full textEl sueño de dirigir una película. Noticias sobre los proyectos de José Revueltas como realizador
No full text
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
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