Encontrados 6 documentos, a visualizar página 1 de 1
Clique communities in social networks
Cavique, Luís; Mendes, Armando Brito; Santos, Jorge M. AzevedoGiven the large amount of data provided by the Web 2.0, there is a pressing need to obtain new metrics to better understand the network structure; how their communities are organized and the way they evolve over time. Complex network and graph mining metrics are essentially based on low complexity computational procedures like the diameter of the graph, clustering coefficient and the degree distribution of the ...
Logical Analysis of Inconsistent Data (LAID) for a paremiologic study
Cavique, Luís; Mendes, Armando Brito; Funk, Matthias15th Portuguese Conference on Artificial Inteligence - EPIA 2011. Lisboa, Faculdade de Ciências da Universidade de Lisboa ; A paremiologic (study of proverbs) case is presented as a part of a wider project, based on data collected by thousands of interviews made to people from Azores, and involving a set of twenty-two thousand Portuguese proverbs, where we searched for the minimum information needed to identif...
Multiplier adjustment in data envelopment analysis
Santos, Jorge M. Azevedo; Cavique, Luís; Mendes, Armando BritoCongresso organizado pela Efiusco, realizado em Córdoba de 19-20 de Maio de 2011 ; Weights restriction is a well-known technique in the DEA field. When those techniques are applied,weights cluster around its new limits, making its evaluation dependent of its levels. This paper introduces a new approach to weights adjustment by Goal Programming techniques, avoiding the imposition of hard restrictions that can e...
Proverbs knowledge discovery in the virtual social network due to common knowle...
Mendes, Armando Brito; Funk, Matthias; Cavique, LuísDMIN - The 6th International Conference on Data Mining, Las Vegas, July 12-15, 2010 ; In a series of interviews, it was collected a heterogeneous set of several million relations of positive and negative knowledge that a group of thousands of people has about a set of circa twenty-two thousand Portuguese Proverbs. This is a unique source for socio-cultural analysis of the mechanisms of transmission of oral cul...
An algorithm to discover the k-clique cover in networks
Cavique, Luís; Mendes, Armando Brito; Santos, Jorge M. AzevedoIn social network analysis, a k-clique is a relaxed clique, i.e., a k-clique is a quasi-complete sub-graph. A k-clique in a graph is a sub-graph where the distance between any two vertices is no greater than k. The visualization of a small number of vertices can be easily performed in a graph. However, when the number of vertices and edges increases the visualization becomes incomprehensible. In this paper, we ...
Business intelligence no suporte a decisões sobre comunicações : descrição de u...
Mendes, Armando Brito; Alfaro, Paulo Jorge; Ferreira, AiresO projecto descrito tem o objectivo de apoiar decisões de investimento em infraestruturas de comunicação na Electricidade Dos Açores (EDA), a empresa responsável pela geração, transporte e venda de corrente eléctrica na Região Autónoma dos Açores. A decisão imediata a apoiar consistia em saber se as comunicações entre ilhas deveriam passar para tecnologias Voice over IP (VoIP), um serviço actualmente contratado...
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