论文标题
机器学习协助嵌合在网络中
Machine Learning assisted Chimera and Solitary states in Networks
论文作者
论文摘要
嵌合体和孤立状态因其奇特的动力状态而吸引了科学家和工程师,这与各种自然和人工系统中耦合单元中相干和不相干的动力学演化的共存。已经进一步证明,可以通过适当的通信延迟实施此类状态在振荡器的系统中设计。在这里,使用有监督的机器学习,我们预测(a)延迟的精确值,对于给定的一组系统参数而言,这对于工程嵌合体和孤立状态就足够了,以及(b)此类工程状态的不连贯性强度。对于由单层和多层网络组成的两个不同示例,证明了结果。首先,通过在振荡器的2-D晶格(多重网络)中建立延迟(隔间链接),通过在邻近链接中建立延迟来设计嵌合体状态(孤立状态)。然后,通过馈送从网络模型获得的数据来使用不同的机器学习分类器,KNN,SVM和MLP神经网络。一旦使用有限的数据训练了机器学习模型,它就会对给定的未知系统参数值进行预测。测试准确性,灵敏度和特异性分析表明,MLP-NN分类器比KNN或SVM分类器更适合于工程嵌合体和单个状态的参数值的预测。该技术提供了一种简单的方法来预测临界延迟值以及设计实验设置以创建孤立和嵌合体状态的不一度强度。
Chimera and Solitary states have captivated scientists and engineers due to their peculiar dynamical states corresponding to the co-existence of coherent and incoherent dynamical evolution in coupled units in various natural and artificial systems. It has been further demonstrated that such states can be engineered in systems of coupled oscillators by the suitable implementation of communication delays. Here, using supervised machine learning, we predict (a) the precise value of delay which is sufficient for engineering chimera and solitary states for a given set of system parameters, as well as (b) the intensity of incoherence for such engineered states. The results are demonstrated for two different examples consisting of single layer and multi layer networks. First, the chimera states (solitary states) are engineered by establishing delays in the neighboring links of a node (the interlayer links) in a 2-D lattice (multiplex network) of oscillators. Then, different machine learning classifiers, KNN, SVM and MLP-Neural Network are employed by feeding the data obtained from the network models. Once a machine learning model is trained using a limited amount of data, it makes predictions for a given unknown systems parameter values. Testing accuracy, sensitivity, and specificity analysis reveal that MLP-NN classifier is better suited than Knn or SVM classifier for the predictions of parameters values for engineered chimera and solitary states. The technique provides an easy methodology to predict critical delay values as well as the intensity of incoherence for designing an experimental setup to create solitary and chimera states.