assortativity

== Anglais == === Étymologie === (Date à préciser) Nom dérivé de assortative, avec le suffixe -ity. === Nom commun === assortativity \Prononciation ?\ (Théorie des graphes, Mathématiques, Biologie, Biochimie, Physique, Informatique, Sociologie) (Réseaux sociaux) Assortativité. Assortativity mixing is the tendency for entities in a network to be connected to other entities that are like them in some way. This phenomenon has been much studied for social networks, where users show a preference to link, follow, or listen to other users who are like them. When dealing with social networks, assortativity is usually known as homophily. — (Cristina Pérez-Solà et Jordi Herrera-Joancomartí, "Improving relational classification using link prediction techniques. [Amélioration de la classification relationnelle à l'aide de techniques de prédiction de liens]" dans (Joint European Conference on) Machine Learning and Knowledge Discovery in Databases. Berlin, Springer, 2013, page 592, section 2.2 → lire en ligne) La traduction en français de l’exemple manque. (Ajouter) Assortativity or assortative mixing is the tendency of a network’s vertices to connect to others with similar characteristics, and has been shown to play a vital role in the structural properties of complex networks. Most of the existing assortativity measures have been developed on the basis of vertex degree information. […] We have proposed a novel edge assortativity characterization for quantifying the assortative mixing properties for both undirected and directed graphs based on the von Neumann entropy associated with edges. — (Cheng Ye, Richard C. Wilson, Edwin R. Hancock, "An entropic edge assortativity measure. [Une mesure entropique de l’assortativité des arrêtes]", dans International Workshop on Graph-Based Representations in Pattern Recognition, Springer, 2015 → lire en ligne) Despite the importance of the degree distribution, it is not a comprehensive characteristic of networks. An important one is an assortativity, that is, the tendency of nodes to connect with similar or dissimilar ones (thus networks called assortative or disassortative respectively). While degree distribution is a first order graph metric, the assortativity is a second order one. In a strict sense, the network assortativity may be applied to any of first order characteristics such as node weight, node betweenness, kth level node degree. In addition, assortativity may be applied to node characteristics that are not directly topology-related. But in common use assortativity is considered for the degree of the nodes in the network. It is known that social networks have a mainly positive assortativity, while biological and technical ones are disassortative. — (Vadim Shergin, Serhii Udovenko, Larysa Chala. "Assortativity properties of Barabási-Albert networks. [Propriétés de l’assortativité des réseaux Barabási-Albert.]" dans Data-Centric Business and Applications: ICT Systems-Theory, Radio-Electronics, Information Technologies and Cybersecurity, volume 5, Springer, 2020, page 56 → lire en ligne) Homophily in networks can be studied by computing the assortativity for specific node attributes such as gender, descent, education, and age […]. For each of the 170 character networks, the Python software package Networkx was used to compute four so-called assortativity coefficients related to gender, descent, education, and age of the characters. These assortativity coefficients are the Pearson correlation coefficients for each dyad of characters sharing edges. The result is a number between -1 and 1, with positive values indicating a correlation between characters with similar gender, descent, education, or age, and negative values indicating a correlation between characters with different gender, descent, education, or age. — (Roel Smeets, Character Constellations: Representations of Social Groups in Present-day Dutch Literary Fiction [Constellations de personnages : représentations des groupes sociaux dans la fiction littéraire néerlandaise contemporaine], Presses universitaires de Louvain, 2020, pages 134-135. → lire en ligne) ==== Quasi-synonymes ==== homophily (« homophilie ») (Sociologie) (Réseaux sociaux) assortative mixing (« mélange assortatif ») ==== Antonymes ==== disassortativity (« disassortativité ») ==== Dérivés ==== disassortativity (« disassortativité ») ==== Apparentés étymologiques ==== ==== Vocabulaire apparenté par le sens ==== === Prononciation === → Prononciation audio manquante. (Ajouter un fichier ou en enregistrer un avec Lingua Libre ) === Voir aussi === Q4810299 dans la base de données Wikidata Assortativity sur l’encyclopédie Wikipédia (en anglais) === Références ===