1,720,958 research outputs found
Facebook out of control? A technically-mediated autonomous technology
No full textOn the controversy triggered by the influence of the so-called “fake news” that circulated on Facebook in the 2016 United States presidential elections, we notice the emergence of an idea of “control of technology”, both in the platform’s official publications and steps announced after the event, and in the specialized media demands. In order to refute the idea of total control of technology and defend the recognition of the action of nonhuman elements, thus contributing to a better understanding of the platform’s actions, we use the concepts of “autonomous technology”, by Langdon Winner (1977), and “technical mediation”, by Bruno Latour (1994). Methodologically, we were inspired by the Cartography of Controversies (VENTURINI, 2010) and worked with content collected through the platform’s official pages and media vehicles that covered the event from July 2016 to July 2018
Questões e apontamentos para o estudo de algoritmos
Get PDFRecent controversies concerning platforms and their policies of circulation of content have put the spotlight on algorithms in media vehicles. In this paper, we talk about what algorithms are and how they act on the platforms, going through some fundamental discussions that emerge when we talk about algorithms. Therefore, our goal is to design and present a panorama to help researchers who are interested in studying the subject.Controvérsias recentes envolvendo plataformas e suas políticas de circulação de conteúdo fizeram com que os algoritmos se tornassem pauta nos veículos de mídia. Neste trabalho, falamos um pouco sobre o que são os algoritmos e como eles agem nas plataformas, passando por algumas discussões fundamentais que emergem quando falamos sobre algoritmos. Nosso objetivo é, portanto, desenhar e apresentar um panorama para auxiliar pesquisadores que se interessam em estudar a temática
A wikimedia no Brasil : o poder e os desafios do conhecimento livre
No full textEste livro apresenta a trajetória da Wikimedia no Brasil, celebrando e reconhecendo o trabalho e reunindo histórias sobre a trajetória das pessoas que protagonizam o desenvolvimento da Wikimedia no Brasil. A obra reúne capítulos de autoria de professores, pesquisadores, profissionais, wikimedistas e entusiastas do Movimento Wikimedia e faz parte das celebrações do décimo aniversário da associação brasileira sem fins lucrativos Wikimedia Brasil (WMB), comemorado em outubro de 2023
(IN)VISIBILIDADE ALGORÍTMICA NO “FEED DE NOTÍCIAS” DO FACEBOOK // ALGORITHMIC (IN)VISIBILITY IN FACEBOOK NEWS FEED
Get PDFApesar de os algoritmos responsáveis pelo Feed de Notícias (FN) serem apresentados pelo Facebook como atores que agem objetiva e imparcialmente, eles são realizações incertas e provisórias, sendo refeitos e adaptados constantemente. Neste artigo, discutimos os regimes de visibilidade e invisibilidade gestados pelo Facebook no FN, com ênfase na articulação das agências de humanos e não humanos. Discutimos ainda o esforço institucional da empresa em se tornar mais transparente sem, no entanto, revelar detalhes técnicos do funcionamento de seus algoritmos. Para isso, partimos de informações fornecidas pelo próprio Facebook – principalmente por uma série de 34 posts publicados desde 2013 na categoria NewsFeed FYI do site Newsroom. Entre outras questões, as informações compiladas nos permitiram identificar o crescente conjunto de variáveis que influenciam na exibição (ou não) de um post e algumas tensões em torno do que privilegiar (conteúdos de interesse pessoal ou mais amplos, por exemplo). Para essa discussão, nos apoiamos em um conjunto de autores que discutem a agência dos algoritmos na contemporaneidade, com ênfase nos regimes de visibilidade e invisibilidade (GILLESPIE, 2014) e de conhecimento (KITCHIN, 2014) por eles gestados. Mais especificamente, nos aproximamos de estudos que se atêm à especificidades dos algoritmos nas redes sociais online e no Facebook (GERLITZ e HELMOND, 2013; BUCHER, 2012)
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
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
- …
