1,721,382 research outputs found
Supplemental Material, pp-2017-0127-File003 - Perceptions of parties’ left-right positions: The impact of salience strategies
No full textSupplemental Material, pp-2017-0127-File003 for Perceptions of parties’ left-right positions: The impact of salience strategies by Thomas M Meyer, and Markus Wagner in Party Politics</p
Supplemental Material - Voters and the IMF: Experimental Evidence From European Crisis Countries
No full textSupplemental Material for Voters and the IMF: Experimental Evidence From European Crisis Countries by Evelyne Hübscher, Thomas Sattler, and Markus Wagner in Comparative Political Studies</p
Supplemental Material, pp-2017-0015-File003-supplementary - Fighting for attention: Media coverage of negative campaign messages
No full textSupplemental Material, pp-2017-0015-File003-supplementary for Fighting for attention: Media coverage of negative campaign messages by Martin Haselmayer, Thomas M Meyer and Markus Wagner in Party Politics</p
Ant colony optimisation and the travelling salesperson problem - hardness, features and parameter settings
No full textOur study on ant colony optimization (ACO) and the Travelling Salesperson Problem (TSP) attempts to understand the effect of parameters and instance features on performance using statistical analysis of the hard, easy and average problem instances for an algorithm instance.Samadhi Nallaperuma, Markus Wagner, Frank Neuman
Experimental supplements to the computational complexity analysis of genetic programming for problems modelling isolated program semantics
No full textIn this paper, we carry out experimental investigations that complement recent theoretical investigations on the runtime of simple genetic programming algorithms [3, 7]. Crucial measures in these theoretical analyses are the maximum tree size that is attained during the run of the algorithms as well as the population size when dealing with multi-objective models. We study those measures in detail by experimental investigations and analyze the runtime of the different algorithms in an experimental way.Tommaso Urli, Markus Wagner and Frank Neuman
Exact Approaches for the Travelling Thief Problem
No full textMany evolutionary and constructive heuristic approaches have been introduced in order to solve the Travelling Thief Problem (TTP). However, the accuracy of such approaches is unknown due to their inability to find global optima. In this paper, we propose three exact algorithms and a hybrid approach to the TTP. We compare these with state-of-the-art approaches to gather a comprehensive overview on the accuracy of heuristic methods for solving small TTP instances.Junhua Wu, Markus Wagner, Sergey Polyakovskiy, and Frank Neuman
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
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