1,720,974 research outputs found
Early, Late, and Multiple Bidding in Internet Auctions
Full text linkIn Internet auctions bidders frequently bid in one of three ways: either only early, or late, or they revise their early bids. This paper rationalizes all three bidding patterns within a single equilibrium. We consider a model of a dynamic auction in which bidders can search for outside prices during the auction. We find that in the equilibrium bidders with the low search costs bid only late and always search, while the bidders with high search costs bid early or multiple times and search only if they were previously outbid. An important feature of the equilibrium is that early bidding allows bidders to search in a coordinated manner. This means that everyone searches except the bidder with the highest early bid. We also compare the static and dynamic auction and conclude that dynamic auction is always more efficient but not always more profitable.dynamic auction, Internet auctions, information aquisition
Legitimacy of Control
No full textpolicy, but the institute itself takes no institutional policy positions
Unequal Outside Options in the Lost Wallet Game
Full text linkExperimental evidence suggests the size of the foregone outside option of the first mover does not affect the behavior of the second mover in the lost wallet game. In this paper we experimentally compare the behavior of subjects when they face an outside option with unequal payoffs, i.e., the first mover gets 10 and the second mover gets 0, and when they face an outside option with equal payoffs, i.e., both get 5. Consistent with the most of the literature we do not find a significant difference in behavior of second movers.Experimental economics; fairness; inequality; lost wallet game; outside option
Does Fairness of the Outside Option Matter?
Full text linkExperimental evidence suggests that the size of the foregone outside option does not affect the behavior of the opponent in a lost wallet and pie sharing games but that it matters in a mini-ultimatum game. In this paper we experimentally test a conjecture that it is the fairness property of the outside option which could be responsible for this effect. We compare the behavior of subjects in the lost wallet game when they face a fully unequal (“unfair”) outside option, i.e., the first mover gets 10 and the second mover gets nothing, and when they face an equal (“fair”) outside option, i.e., both get an equal amount of 5. Contrary to our conjecture we do not find a significant difference.Experimental economics; Outside option; Fairness
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
- …
