141 research outputs found
Synchronizabilities of Networks: A New index
The random matrix theory is used to bridge the network structures and the
dynamical processes defined on them. We propose a possible dynamical mechanism
for the enhancement effect of network structures on synchronization processes,
based upon which a dynamic-based index of the synchronizability is introduced
in the present paper.Comment: 4pages, 2figure
Different methods for the threshold of epidemic on heterogeneous networks
AbstractThe study of the spread of epidemic on different social networks has attracted many attentions from researchers in different fields. One main topical problem is the threshold of transmission rate or the basic reproductive number on different social networks. Recently, several efficient methods on solving the threshold of epidemic on heterogeneous networks were proposed. In this paper, we summarize several methods and compare their advantages or disadvantages systematically
Application of Cellular Automaton Model to Advanced Information Feedback in Intelligent Transportation Systems
Improved collaborative filtering algorithm based on heat conduction
In this paper, we present an improved collaborative filtering (ICF) algorithm by using the heat diffusion process to generate the user correlation. This algorithm has remarkably higher accuracy than the standard collaborative filtering (CF) using Pearson correlation. Furthermore, we introduce a free parameter β to regulate the contributions of objects to user correlation. The numerical simulation results indicate that decreasing the influence of popular objects can further improve the algorithmic accuracy and diversit
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