期刊
IEEE TRANSACTIONS ON NETWORK SCIENCE AND ENGINEERING
卷 7, 期 1, 页码 549-561出版社
IEEE COMPUTER SOC
DOI: 10.1109/TNSE.2018.2885483
关键词
Activity-driven; behavior; epidemic threshold; epidemic size; mean-field; time-varying network
资金
- National Science Foundation [CMMI-1561134]
- Army Research Office [W911NF-15-1-0267]
- Compagnia di San Paolo, Italy
- Italian Ministry of Foreign Affairs and International Cooperation, within the project Mac2Mic, Macro toMicro: uncovering the hidden mechanisms driving network dynamics, under the bilateral agreement between Italy and Israel for scientific, technologica
Activity-driven networks (ADNs) are a powerful paradigm to study epidemic spreading in temporal networks, where the dynamics of the disease and the evolution of the links share a common time-scale. One of the key assumptions of ADNs is the lack of preferential connections among individuals. This assumption hinders the application of ADNs to several realistic scenarios where some contacts persist in time, rather than intermittently activate. Here, we examine an improved modeling framework that superimposes an ADN to a static backbone network, toward the integration of persistent contacts with time-varying connections. To demonstrate the interplay between the ADN and the static backbone, we investigate the effect of behavioral changes on the disease dynamics. In this framework, each individual may adapt his/her activity as a function of the health status, thereby adjusting the relative weight of time-varying versus static links. To illustrate the approach, we consider two classes of backbone networks, Erdos-Renyi and random regular, and two disease models, SIS and SIR. A general mean-field theory is established for predicting the epidemic threshold, and numerical simulations are conducted to shed light on the role of network parameters on the epidemic spreading and estimate the epidemic size.
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