用深度核学习主动探索显微镜中的未知行为模式
Novelty-Driven Target-Space Discovery in Automated Electron and Scanning Probe Microscopy
- 基于深度核学习实时建模结构与性能关系,引导目标空间探索
- 在电子显微镜中实现从数据验证到真实实验的过渡部署
- 提供可复现的基准工具,适合科研人员拓展新方法
现代自动化显微镜面临核心发现挑战:许多系统中关键科学信息并不体现在直接可见的图像特征上,而存在于连续获取的光谱或功能响应的目标空间中。为此,我们提出一种名为BEACON的深度核学习框架,通过实验过程中学习结构-性质关系,并利用动态演化的模型主动寻找多样化的响应状态。首先基于预采集的真实数据集构建演示流程,实现与经典采集策略的直接对比,定义了监测函数以透明、可重复地评估探索质量、目标空间覆盖度和代理模型行为。该基准框架为评价发现驱动算法提供了实用基础,不仅限于优化性能。随后,我们将该流程成功部署于透射电镜(STEM),实现从离线验证到真实实验的转化。配套代码笔记本已公开,支持用户复现流程、测试基准并适配自身仪器与数据。
原文摘要 · Abstract (English)
Modern automated microscopy faces a fundamental discovery challenge: in many systems, the most important scientific information does not reside in the immediately visible image features, but in the target space of sequentially acquired spectra or functional responses, making it essential to develop strategies that can actively search for new behaviors rather than simply optimize known objectives. Here, we developed a deep-kernel-learning BEACON framework that is explicitly designed to guide discovery in the target space by learning structure-property relationships during the experiment and using that evolving model to seek diverse response regimes. We first established the method through demonstration workflows built on pre-acquired ground-truth datasets, which enabled direct benchmarking against classical acquisition strategies and allowed us to define a set of monitoring functions for comparing exploration quality, target-space coverage, and surrogate-model behavior in a transparent and reproducible manner. This benchmarking framework provides a practical basis for evaluating discovery-driven algorithms, not just optimization performance. We then operationalized and deployed the workflow on STEM, showing that the approach can transition from offline validation to real experimental implementation. To support adoption and extension by the broader community, the associated notebooks are available, allowing users to reproduce the workflows, test the benchmarks, and adapt the method to their own instruments and datasets.
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