Network-based stochastic competitive learning approach to disambiguation in collaborative networks

Autor(es)

Silva, Thiago Christiano ^[1] ; Amancio, Diego Raphael ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Math & Comp Sci, BR-13560970 Sao Paulo - Brazil

^[2] Univ Sao Paulo, Inst Phys Sao Carlos, BR-13560970 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Chaos; v. 23, n. 1 MAR 2013.
• Citações Web of Science: 2

Resumo

Many patterns have been uncovered in complex systems through the application of concepts and methodologies of complex networks. Unfortunately, the validity and accuracy of the unveiled patterns are strongly dependent on the amount of unavoidable noise pervading the data, such as the presence of homonymous individuals in social networks. In the current paper, we investigate the problem of name disambiguation in collaborative networks, a task that plays a fundamental role on a myriad of scientific contexts. In special, we use an unsupervised technique which relies on a particle competition mechanism in a networked environment to detect the clusters. It has been shown that, in this kind of environment, the learning process can be improved because the network representation of data can capture topological features of the input data set. Specifically, in the proposed disambiguating model, a set of particles is randomly spawned into the nodes constituting the network. As time progresses, the particles employ a movement strategy composed of a probabilistic convex mixture of random and preferential walking policies. In the former, the walking rule exclusively depends on the topology of the network and is responsible for the exploratory behavior of the particles. In the latter, the walking rule depends both on the topology and the domination levels that the particles impose on the neighboring nodes. This type of behavior compels the particles to perform a defensive strategy, because it will force them to revisit nodes that are already dominated by them, rather than exploring rival territories. Computer simulations conducted on the networks extracted from the arXiv repository of preprint papers and also from other databases reveal the effectiveness of the model, which turned out to be more accurate than traditional clustering methods. (C) 2013 American Institute of Physics. {[}http://dx.doi.org/10.1063/1.4794795] (AU)

• Processo FAPESP: 10/00927-9 - Classificação de textos com redes complexas
• Beneficiário: Diego Raphael Amancio
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 09/12329-1 - Análise de propagação de erros em aprendizado semi-supervisionado baseado em redes complexas
• Beneficiário: Thiago Christiano Silva
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto