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EUSN 2021 Book of Abstracts, Fifth European Conference on Social Networks
Full text linkBook of abstract of the fifth European conference on Social Networks EUSN 202
EUSN 2021 Book of Abstracts. 5th European Conference on Social Networks
No full textIn recent years, the analysis of ego networks has attracted a great attention and found application in many areas of the social sciences. Several studies have pointed out the crucial role played by network characteristics (such as size and composition) in the study of social relationships and their impact on many aspects of everyday life (e.g., social support, well-being, health, and mobility). In this context, the identification of network typologies has become a crucial task and a powerful tool to capture aspects of the social space or personal community in which people are embedded. Along this direction, clustering methods have been exploited to identify and characterize existent types of ego networks.
In this work, we propose a distance-based clustering procedure to identify groups of similar ego networks, which are described by a small number of compositional variables. The proposed approach is motivated by the empirical study of ego networks of contacts extracted from the latest edition of “Family and Social Subjects" (FSS) Survey conducted by the Italian National Statistical Institute in 2016. In particular, we focus on elderly respondents living alone, which can be regarded as a vulnerable category, with the aim to describe their network of contacts. As the FSS Survey is not specifically oriented to network analysis, its major limitation consists in the lack of information on alter-alter ties. Coping with these limitations, we first mine relational information in FSS data in order to derive the ego networks of respondents. Then, we develop a clustering procedure in the hierarchical framework to identify a partition of ego networks according to their composition. The proposed approach has the main advantage to be particularly suitable when the involved variables are heterogeneous, in both range and type, which can easily happen if ego networks are derived from secondary data, rather than using ad-hoc designs. We discuss the choice of a suitable dissimilarity metric and the issue of the selection
of the number of clusters. The prototypical units---one for each cluster---resulting from the proposed method, enhance the cluster interpretation.
Results on the analysis of ego networks for the elderly people show the suitability of the proposed procedure to investigate the existing patterns in egocentric data, especially when the data are defined over heterogeneous attributes concerning the network composition, making our approach applicable to various surveys
Sports fandom between social networks and grassroots cultures: the analysis of Inter Milan fan communities on Instagram
No full textStarting from the concept of mediatization of sport (Frandsen 2014, 2019, 2020; Tirino 2019), exemplified by analyzing what is called the “SMS triangle” (sport, media and sponsors) (Martelli 2014; Bifulco e Tirino 2019), our paper aims to emphasize the phenomenon of sports fandom (Sandvoss 2003; Sandvoss, Gray, Harrington 2017) on social networks. In particular, we start from the assumption that social networks have brought about some changes in the world of sport (Frandsen 2019), not only from a technological point of view, but also from a socio-cultural one. These media, in fact, are part of a complex process involving sports organizations, athletes and fan. Sports fandom in particular adapted to new pattern of sports consumption (Sandvoss 2003; Williams 2007) and to new mediascapes configurations. Particularly interesting for this purpose is the analysis of the grassroots cultures that, in the world of sport and through online communities on social networks, remediate sports fandom, according to the typical methods of remix cultures (Navas,
Gallagher, Burrough 2015). According to Hills, fans, in fact, interpret media contents in particular and unexpected ways, participating in community processes (Hills 2002) and become themselves producers of these contents on social networks. To investigate these phenomena, we will use media content analysis to study the production and the dissemination of memes of Inter Milan fan online communities on the social network Instagram. Our paper will try to highlight how these grassroots practices elaborate the connection between sports fandom and social network in an innovative way, relying on emotion and fun
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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