1,721,040 research outputs found
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
Web and Internet Economics
No full textThis book constitutes the thoroughly refereed proceedings of the 13th International Conference on Web and Internet Economics, WINE 2017,
held in Bangalore, India, in December 2017.
The 28 full and 6 short papers presented were carefully reviewed and selected
from 89 submissions. The papers reflect the work of researchers in theoretical
computer science, artificial intelligence, and microeconomics who have joined
forces to tackle problems at the intersection of computation, game theory and
economics
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
Network congestion games are robust to variable demand
Get PDFNetwork congestion games have provided a fertile ground for the algorithmic game theorycommunity. Indeed, many of the pioneering works on bounding the efficiency of equilibria usethis framework as their starting point. In recent years, there has been an increased interestin studying randomness in this context though the efforts have been mostly devoted to under-standing what happens when link latencies are subject to random shocks. Although this is animportant practical consideration, it is not the only source of randomness in network congestiongames. Another important source is the inherent variability of the demand that most practicalnetworks suffer from. Therefore in this paper we look at the basic non-atomic network conges-tion game with the additional feature that demand is random. Our main result in this paper isthat under a very natural equilibrium notion, in which the basic behavioral assumption is thatusers evaluate their expected cost according to the demand they experience in the system, theprice of anarchy of the game is actually the same as that in the deterministic demand game.Moreover, the result can be extended to the more general class of smooth games
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
Computing Approximate Pure Nash Equilibria in Shapley Value Weighted Congestion Games
Get PDFWe study the computation of approximate pure Nash equilibria in Shapley value (SV) weighted congestion games, introduced in [19]. This class of games considers weighted congestion games in which Shapley values are used as an alternative (to proportional shares) for distributing the total cost of each resource among its users. We focus on the interesting subclass of such games with polynomial resource cost functions and present an algorithm that computes approximate pure Nash equilibria with a polynomial number of strategy updates. Since computing a single strategy update is hard, we apply sampling techniques which allow us to achieve polynomial running time. The algorithm builds on the algorithmic ideas of [7], however, to the best of our knowledge, this is the first algorithmic result on computation of approximate equilibria using other than proportional shares as player costs in this setting. We present a novel relation that approximates the Shapley value of a player by her proportional share and vice versa. As side results, we upper bound the approximate price of anarchy of such games and significantly improve the best known factor for computing approximate pure Nash equilibria in weighted congestion games of [7]
Web and Internet Economics
No full textThis book constitutes the thoroughly refereed proceedings of the 13th International Conference on Web and Internet Economics, WINE 2017,
held in Bangalore, India, in December 2017.
The 28 full and 6 short papers presented were carefully reviewed and selected
from 89 submissions. The papers reflect the work of researchers in theoretical
computer science, artificial intelligence, and microeconomics who have joined
forces to tackle problems at the intersection of computation, game theory and
economics
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
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