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    Université de Fribourg

    Improve consensus via decentralized predictive mechanisms

    Zhang, Hai-Tao ; Chen, Michael ZhiQiang ; Zhou, Tao

    In: EPL Europhysics Letters, 2009, vol. 86, p. 40011

    For biogroups and groups of self-driven agents, making decisions often depends on interactions among group members. In this paper, we seek to understand the fundamental predictive mechanisms used by group members in order to perform such coordinated behaviors. In particular, we show that the future dynamics of each node in the network can be predicted solely using local information provided by...

    Université de Fribourg

    Ultrafast consensus via predictive mechanisms

    Zhang, Hai-Tao ; Chen, Michael ZhiQiang ; Zhou, Tao ; Stan, Guy-Bart

    In: EPL Europhysics Letters, 2008, vol. 83, no. 4, p. 40003

    An important natural phenomenon surfaces that ultrafast consensus can be achieved by introducing predictive mechanisms. By predicting the dynamics of a network several steps ahead and using this information in the consensus protocol, it is shown that, without changing the topology of the network, drastic improvements can be achieved in terms of the speed of convergence towards consensus and of...

    Université de Fribourg

    Collective behavior coordination with predictive mechanisms

    Zhang, Hai-Tao ; Chen, Michael ZhiQiang ; Stan, Guy-Bart ; Zhou, Tao ; Maciejowski, Jan M.

    In: IEEE Circuits and Systems Magazine, 2008, vol. 6, no. 3, p. 67 - 85

    In natural flocks/swarms, it is very appealing that low-level individual intelligence and communication can yield advanced coordinated collective behaviors such as congregation, synchronization and migration. In the past few years, the discovery of collective flocking behaviors has stimulated much interest in the study of the underlying organizing principles of abundant natural groups, which has...

    Université de Fribourg

    Singularities and symmetry breaking in swarms

    Li, Wei ; Zhang, Hai-Tao ; Chen, Michael ZhiQiang ; Zhou, Tao

    In: Physical Review E, 2008, vol. 77, no. 5, p. 021920

    A large-scale system consisting of self-propelled particles, moving under the directional alignment rule (DAR), can often self-organize to an ordered state that emerges from an initially rotationally symmetric configuration. It is commonly accepted that the DAR, which leads to effective long-range interactions, is the underlying mechanism contributing to the collective motion. However, in this...