1,721,086 research outputs found
Horacio Giberti, Aldo Solari, Gino Germani et Jorge A. Ochoa de Eguileor, Sociedad, Economia y Reforma Agraria (Société, économie et réforme agraire)
No full textDécouflé Lucile. Horacio Giberti, Aldo Solari, Gino Germani et Jorge A. Ochoa de Eguileor, Sociedad, Economia y Reforma Agraria (Société, économie et réforme agraire). In: Tiers-Monde, tome 6, n°23, 1965. Intégration latino-américaine, sous la direction de Gustavo Lagos. pp. 847-848
Collective Outlier Detection and Enumeration with Conformalized Closed Testing
Full text linkThis paper develops a distribution-free method for collective outlier detection and enumeration, designed for situations in which the precise identification of individual outliers may be impractical due to the sparsity or weakness of their signals. This method builds upon the latest developments in conformal inference and blends them with more classical ideas from other areas, including multiple testing, rank tests, permutations, and non-parametric large-sample asymptotics. Key innovations include an extension of the Wilcoxon-Mann-Whitney test, which may be of some independent interest, and a principled algorithm for tuning the choices of machine learning classifier and two-sample testing procedure utilized by our method, yielding to an adaptive strategy. Assuming to have a control sample where all the observations are drawn independently from the same distribution (inlier distribution) and a test sample where possibly some observations are extracted from a different distribution (outlier distribution), our methodology implements the closed testing procedure providing simultaneous inference on the number of outliers in the test sample or in any subset of the test set. The inferential result produced by our method is a (1−α)-confidence lower bounds for the number of true outliers after any selection of the data in the test set. Further, we motivate theoretically the choice of the extended Wilcoxon-Mann-Whitney tests as local test in the closed testing procedure, studying their optimality and deriving interesting findings under distribution-free alternatives. Delving into how local optimality transfers to the closed testing procedure is prompt for future research. The effectiveness of our method is highlighted through extensive empirical demonstrations, including an analysis of the LHCO high-energy particle collision data set
Preface
Full text linkThis volume contains the Proceedings of the 13th Symposium on Conformal and Probabilistic Prediction with Applications (COPA2024), organised by Politecnico di Milano, Italy, and held in Milano on September 9-11, 2024. Overall, 2 keynotes speeches, 2 tutorials, 27 presentations and 5 posters have been presented during the conference. The rest of the publication includes full papers from the 27 presentations, one from one of the tutorials, and abstracts for the keynotes, one tutorial and the 5 posters
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
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