1,720,967 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
No full text“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
No full textWe 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
FPGA implementation of 2D Convolution using OneAPI and OpenCL
No full textInternational audienceThanks to High-Level Synthesis (HLS) tools, FPGAs have become an alternative to GPUs for compute-intensive applications. These tools have been developed to provide flexibility in FPGA design at a higher abstraction level than hardware description languages. Major FPGA manufacturers have proposed many HLS tools depending on the target audience. In this paper, we propose a hardware architecture on FPGA for 2D convolution designed through two software-like development tools based on oneAPI and OpenCL languages. This paper also focuses on comparing the oneAPI and OpenCL HLS tools in terms of performance and productivity with the case study of the 2D convolution operator using an Intel Stratix 10 device
Premiers résultats de comparaison des outils oneAPI et OpenCL pour la convolution 2D sur FPGA
No full textInternational audience-Grâce aux outils de synthèse de haut niveau (HLS), les FPGA sont devenus une alternative aux GPU pour les applications à forte intensité de calcul. Ces outils ont été développés pour offrir une certaine flexibilité dans la conception des FPGA à un niveau d'abstraction plus élevé par rapport aux langages de description matérielle. Les principaux fabricants de FPGA ont proposé de nombreux outils HLS en fonction du public cible. Ce papier s'attache à comparer les outils HLS oneAPI et OpenCL en termes de performance et de productivité avec comme cas d'étude l'accélération de l'opérateur de convolution 2D. Pour des mêmes types d'optimisations (déroulage de boucle, utilisation de la mémoire locale), les performances obtenues pour les deux outils y sont présentées
FPGA implementation of 2D Convolution using OneAPI and OpenCL
No full textInternational audienceThanks to High-Level Synthesis (HLS) tools, FPGAs have become an alternative to GPUs for compute-intensive applications. These tools have been developed to provide flexibility in FPGA design at a higher abstraction level than hardware description languages. Major FPGA manufacturers have proposed many HLS tools depending on the target audience. In this paper, we propose a hardware architecture on FPGA for 2D convolution designed through two software-like development tools based on oneAPI and OpenCL languages. This paper also focuses on comparing the oneAPI and OpenCL HLS tools in terms of performance and productivity with the case study of the 2D convolution operator using an Intel Stratix 10 device
Memory prefetching for tomography acceleration on FPGAs through HLS tools
No full textInternational audienceBackward projection is one of the most timeconsuming steps in method-based iterative reconstruction computed tomography. The 3D back-projection memory access pattern is potentially enough to efficiently exploit the computation power of acceleration boards based on GPU or FPGA. However, exploiting the full potential of these architectures has always been a major concern. Therefore, an algorithm architecture co-design approach is necessary to harness these parallel architectures sufficiently. This paper proposes an OpenCL acceleration of the voxel-driven 3D backprojection algorithm on an Arria 10 FPGA. We perform an offline study of the algorithm memory access pattern to prefetch sinogram data to the on-chip BRAM before performing reconstruction
Premiers résultats de comparaison des outils oneAPI et OpenCL pour la convolution 2D sur FPGA
No full textInternational audience-Grâce aux outils de synthèse de haut niveau (HLS), les FPGA sont devenus une alternative aux GPU pour les applications à forte intensité de calcul. Ces outils ont été développés pour offrir une certaine flexibilité dans la conception des FPGA à un niveau d'abstraction plus élevé par rapport aux langages de description matérielle. Les principaux fabricants de FPGA ont proposé de nombreux outils HLS en fonction du public cible. Ce papier s'attache à comparer les outils HLS oneAPI et OpenCL en termes de performance et de productivité avec comme cas d'étude l'accélération de l'opérateur de convolution 2D. Pour des mêmes types d'optimisations (déroulage de boucle, utilisation de la mémoire locale), les performances obtenues pour les deux outils y sont présentées
Dispelling the Myths Behind First-author Citation Counts
No full textWe 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
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