Social network analytics and visualization: Dynamic topic-based influence analysis in evolving micro-blogs

• Tipo: Artigo em Revista Científica Internacional
• Data: 2023-06

Autores

Tabassum, S (Autor) Outra; João Gama (Autor) FEP; Azevedo, PJ (Autor) Outra; Cordeiro, M (Autor) Outra; Martins, C (Autor) Outra; Martins, A (Autor) Outra

Revista

Título: Expert Systems

Vol. 40 Nº 5

ISSN: 0266-4720

Editora: Wiley-Blackwell

Indexação

ISI Web of Knowledge - 6 Citações

Scopus - 6 Citações

Outras Informações

ID Authenticus: P-00X-HZN

DOI: 10.1111/exsy.13195

Abstract (EN): Influence Analysis is one of the well-known areas of Social Network Analysis. However, discovering influencers from micro-blog networks based on topics has gained recent popularity due to its specificity. Besides, these data networks are massive, continuous and evolving. Therefore, to address the above challenges we propose a dynamic framework for topic modelling and identifying influencers in the same process. It incorporates dynamic sampling, community detection and network statistics over graph data stream from a social media activity management application. Further, we compare the graph measures against each other empirically and observe that there is no evidence of correlation between the sets of users having large number of friends and the users whose posts achieve high acceptance (i.e., highly liked, commented and shared posts). Therefore, we propose a novel approach that incorporates a user's reachability and also acceptability by other users. Consequently, we improve on graph metrics by including a dynamic acceptance score (integrating content quality with network structure) for ranking influencers in micro-blogs. Additionally, we analysed the topic clusters' structure and quality with empirical experiments and visualization.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 21