用类脑神经网络加速复杂系统可靠性分析,兼具速度与可信度。
CoNBONet: Conformalized Neuroscience-inspired Bayesian Operator Network for Reliability Analysis

- 基于类脑神经网络架构,实现快速低功耗推理。
- 在多种非线性系统上准确预测失效概率,覆盖率可靠。
- 适合需要高效且带置信保障的工程可靠性设计场景。
在随机激励下,非线性动力系统的时变可靠性分析虽关键但计算成本极高。传统方法如蒙特卡洛模拟需反复调用昂贵的数值求解器,造成严重计算瓶颈。为此,本文提出CoNBONet(Conformalized Neuroscience-inspired Bayesian Operator Network),一种受神经科学启发的代理模型,可实现快速、节能且具备不确定性感知的可靠性分析,为蒙特卡洛等方法提供可扩展替代方案。CoNBONet结合深度算子网络的表达能力与类脑神经元模型,在保证高维时变问题可扩展性的同时,实现快速低功耗推理;通过分割式共形预测提供具有理论保障的校准不确定性量化;并借助算子学习范式,将输入函数映射为系统响应轨迹,具备强泛化能力。对多种非线性动力系统的验证表明,CoNBONet保持了高预测保真度,并实现了可靠的失效概率覆盖,是工程设计中鲁棒且可扩展的可靠性分析有力工具。
原文摘要 · Abstract (English)
Time-dependent reliability analysis of nonlinear dynamical systems under stochastic excitations is a critical yet computationally demanding task. Conventional approaches, such as Monte Carlo simulation, necessitate repeated evaluations of computationally expensive numerical solvers, leading to significant computational bottlenecks. To address this challenge, we propose \textit{CoNBONet}, a neuroscience-inspired surrogate model that enables fast, energy-efficient, and uncertainty-aware reliability analysis, providing a scalable alternative to techniques such as Monte Carlo simulations. CoNBONet, short for \textbf{Co}nformalized \textbf{N}euroscience-inspired \textbf{B}ayesian \textbf{O}perator \textbf{Net}work, leverages the expressive power of deep operator networks while integrating neuroscience-inspired neuron models to achieve fast, low-power inference. Unlike traditional surrogates such as Gaussian processes, polynomial chaos expansions, or support vector regression, that may face scalability challenges for high-dimensional, time-dependent reliability problems, CoNBONet offers \textit{fast and energy-efficient inference} enabled by a neuroscience-inspired network architecture, \textit{calibrated uncertainty quantification with theoretical guarantees} via split conformal prediction, and \textit{strong generalization capability} through an operator-learning paradigm that maps input functions to system response trajectories. Validation of the proposed CoNBONet for various nonlinear dynamical systems demonstrates that CoNBONet preserves predictive fidelity, and achieves reliable coverage of failure probabilities, making it a powerful tool for robust and scalable reliability analysis in engineering design.
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