Effect of local population uncertainty on cooperation in bacteria
Effect of local population uncertainty on cooperation in bacteria
复制标题
当地人口的不确定性对细菌合作的影响
DOI：
10.1109/itw.2017.8278046
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
A. Eckford
中科院分区：
文献类型：
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作者：
Adam Noel;Yuting Fang;Nan Yang;D. Makrakis;A. Eckford
细菌种群依靠群体感应等机制来协调单个细菌无法完成的复杂任务。群体感应用于测量局部细菌种群密度，它通过确保细菌仅在期望其邻居互惠时才承诺合作资源来控制合作。本文提出了一个简单的模型，在细菌环境中，人口的知识影响每个细菌的行为共享资源。博弈论被用来模拟行为动态，其中净收益（即，效用）是其当前行为和其它细菌的当前行为的函数。游戏首先在完全了解人口的情况下进行评估。然后，扩散的不可靠性在当地人口估计中引入了不确定性，并改变了感知的收益。结果表明系统参数的敏感性和人口的不确定性如何克服缺乏明确的协调。
Bacteria populations rely on mechanisms such as quorum sensing to coordinate complex tasks that cannot be achieved by a single bacterium. Quorum sensing is used to measure the local bacteria population density, and it controls cooperation by ensuring that a bacterium only commits the resources for cooperation when it expects its neighbors to reciprocate. This paper proposes a simple model for sharing a resource in a bacterial environment, where knowledge of the population influences each bacterium's behavior. Game theory is used to model the behavioral dynamics, where the net payoff (i.e., utility) for each bacterium is a function of its current behavior and that of the other bacteria. The game is first evaluated with perfect knowledge of the population. Then, the unreliability of diffusion introduces uncertainty in the local population estimate and changes the perceived payoffs. The results demonstrate the sensitivity to the system parameters and how population uncertainty can overcome a lack of explicit coordination.