1,720,961 research outputs found
Um estudo de caso para verificar a suscetibilidade a incentivos de avaliadores de produtos na web
No full textThe use of Recommender Systems (RS) has become common in several e-commerce websites.
Collaborative Filtering is one of the most popular RS techniques. It infers an user's predilections
based on similarity with other users. However, to work correctly, the RS depends on the
evaluator's participation with truly opinions. The HYRIWYG mechanism proposes an incentive
model to motivate users to contribute with a high number of opinions and, more important, trying
to guarantee the truthfulness of the information. In this paper, we present HYRIWYG mechanism
and discuss it using an empirical study in the movie evaluation domain. The results highlight the
great potential benefits of using this kind of incentive mechanism.O uso de Sistemas de Recomendação (SR) tem se tornado cada vez mais importante no auxílio a
usuários na busca por produtos ou informações relevantes em ambientes como a World Wide
Web. Uma das técnicas mais utilizadas na implementação de um SR é a Filtragem Colaborativa,
que infere predileções de um usuário com base na similaridade com outros usuários. Contudo,
para que um SR funcione corretamente, é preciso confiar na veracidade das opiniões fornecidas.
O mecanismo HYRIWYG propõe um modelo de incentivo para motivar usuários a colaborarem
com mais avaliações sobre os itens e, mais importante, tentando garantir a veracidade dessas
informações. Este trabalho apresenta o mecanismo HYRIWYG e os resultados de um estudo
empírico aplicado ao mundo de recomendações de filmes. Os resultados obtidos mostram os
potenciais benefícios de sua utilização
Padrões de interoperabilidade para repositórios de dados de pesquisa
No full textApresenta uma série de 10 vídeos que destinam-se a discutir brevemente conceitos sobre dados de pesquisa abertos, de seus conceitos associados e de tutoriais práticos acerca da plataforma Dataverse.Vídeo: Não é possível instalar um arquivo de vídeo. Apenas transfira-o para seu computador e abra como um arquivo comum. Arquivos de vídeo não podem ser editados, mas podem ser visualizados em players como o VLC Media Player (que é gratuito), o Windows Media Player ou o QuickTime. Os formatos mais comuns de vídeo serão executados normalmente por estes players (avi, mpeg e mp4).
PDF: Este arquivo não pode ser editado, pois é um formato fechado. Este formato permite que sejam feitas edições - como marcação de texto e comentários, além de preenchimento de formulários - caso o autor permita. Este arquivo pode ser visualizado em leitores de PDF como o Adobe Acrobat Reader ou em navegadores da web.VídeoOs vídeos podem ser utilizados para diversos fins, como forma de orientar discentes, docentes, pesquisadores e demais interessados na temática dos dados de pesquisa
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
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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