Sampling methods and estimation of triangle count distributions in large networks

• Autor(a) principal: Antunes, Nelson
• Data de Publicação: 2021
• Outros Autores: Guo, Tianjian, Pipiras, Vladas
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10400.1/17160
• topic: Triangles; Random sampling; Distribution estimation; Inversion approach; Asymptotic approach; Multiple samples; Static and streaming graphs; Power laws

This paper investigates the distributions of triangle counts per vertex and edge, as a means for network description, analysis, model building, and other tasks. The main interest is in estimating these distributions through sampling, especially for large networks. A novel sampling method tailored for the estimation analysis is proposed, with three sampling designs motivated by several network access scenarios. An estimation method based on inversion and an asymptotic method are developed to recover the entire distribution. A single method to estimate the distribution using multiple samples is also considered. Algorithms are presented to sample the network under the various access scenarios. Finally, the estimation methods on synthetic and real-world networks are evaluated in a data study.