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Graph Pattern Matching (GPM) plays a significant role in social network analysis, which has been widely used in, for example, experts finding, social community mining and social position detection. Given a pattern graph GQ and a data graph GD, a GPM algorithm finds those subgraphs, GM, that match GQ in GD. However, the existing GPM methods do not consider the multiple constraints on edges in GQ, which...
In order to evaluate the MBO short-term performance and long-term performance, by virtue of 36 listed company samples which were buy-outed by management among 1997-2004, an empirical study was conducted based on factor analysis and matching T test. Empirical results showed that there was obvious improvement on the enterprise performance from overall view. The common factors such as risk control factor,...
Cluster validation techniques are essential tools within cluster analysis, helpful to the interpretation of clustering results. In this study, the validation ability of Dunn's index in gene clustering was investigated with public gene expression datasets clustered by hierarchical clustering, K-means and Self-organizing maps. It was made clear that Dunn's index would give misleading validity results...
Harmful algae in source water become a very serious problem for water plants in China. Artificial neural networks (ANN) have been successfully used to model primary production and predict one-step weekly algae blooms in reservoir. In this study, to avoid selecting inputs randomly during the establishment of feed forward ANN forecasting algae two days later, we use correlation coefficient and index...
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