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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Statistical mechanics for natural flocks of birds
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Statistical mechanics for natural flocks of birds

机译：天然鸟群的统计力学

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摘要

Flocking is a typical example of emergent collective behavior, where interactions between individuals produce collective patterns on the large scale. Here we show how a quantitative microscopic theory for directional ordering in a flock can be derived directly from field data. We construct the minimally structured (maximum entropy) model consistent with experimental correlations in large flocks of starlings. The maximum entropy model shows that local, pairwise interactions between birds are sufficient to correctly predict the propagation of order throughout entire flocks of starlings, with no free parameters. We also find that the number of interacting neighbors is independent of flock density, confirming that interactions are ruled by topological rather than metric distance. Finally, by comparing flocks of different sizes, the model correctly accounts for the observed scale invariance of long-range correlations among the fluctuations in flight direction.
机译：植绒是新兴集体行为的典型例子，其中个体之间的互动会大规模产生集体模式。在这里，我们展示了如何直接从田间数据中得出群体定向排序的定量微观理论。我们构建了与大型correlation鸟实验相关性最小的最小结构化模型（最大熵）。最大熵模型表明，鸟类之间的局部，成对相互作用足以正确预测整个star鸟群中的有序繁殖，没有自由参数。我们还发现，相互作用的邻居数与群密度无关，这证实了相互作用是由拓扑而不是度量距离决定的。最后，通过比较不同大小的羊群，该模型正确地解决了飞行方向波动之间远距离相关性的观测尺度不变性。

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  • 作者

    William Bialek; Andrea Cavagna; Irene Giardina; Thierry Mora; Edmondo Silvestri; Massimiliano Viale; Aleksandra M. Walczak;

  • 作者单位

    Joseph Henry Laboratories of Physics and Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544;

    Istituto dei Sistemi Complessi, Consiglio Nazionale delle Ricerche, Rome, Italy,Dipartimento di Fisica, University Sapienza, Rome, Italy;

    Istituto dei Sistemi Complessi, Consiglio Nazionale delle Ricerche, Rome, Italy,Dipartimento di Fisica, University Sapienza, Rome, Italy;

    Laboratoire de Physique Statistique de l'Ecole Normale Superieure, Centre National de la Recherche Scientifique and University Paris VI, Paris, France;

    Istituto dei Sistemi Complessi, Consiglio Nazionale delle Ricerche, Rome, Italy,Dipartimento di Fisica, University Sapienza, Rome, Italy;

    Istituto dei Sistemi Complessi, Consiglio Nazionale delle Ricerche, Rome, Italy,Dipartimento di Fisica, University Sapienza, Rome, Italy;

    Joseph Henry Laboratories of Physics and Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    animal groups; statistical inference;

    机译：动物群;统计推断;

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