用Transformer模型实现引力波参数估计的灵活适配,支持多种观测配置。
Flexible Gravitational-Wave Parameter Estimation with Transformers
- 基于Transformer架构设计可动态适应不同分析设置的模型
- 单模型处理48个引力波事件,样本效率从1.4%提升至4.2%
- 适用于探测器配置变化、频率范围调整及广义相对论检验
引力波数据分析需从噪声信号中提取物理信息,但观测速率与复杂度不断提升带来挑战。深度学习提供传统推断的替代方案,但现有神经模型通常缺乏应对数据设定变化的灵活性。本文提出一种基于Transformer的灵活架构与训练策略,使模型在推理时可适应多种分析场景,包括探测器配置、频率范围或局部截断的变化。应用于参数估计,所提模型Dingo-T1成功实现:(i) 在第三轮LIGO-Virgo-KAGRA观测中对48个引力波事件进行多种配置下的分析;(ii) 系统研究探测器与频率设置对后验分布的影响;(iii) 执行引力波吸积-合并-回音一致性测试以检验广义相对论。同时,该模型将真实事件的中位采样效率从基准值1.4%提升至4.2%。本方法为处理缺失或不完整数据提供了可扩展、有原则的推断框架,对当前及下一代观测站具有重要意义。
原文摘要 · Abstract (English)
Gravitational-wave data analysis relies on accurate and efficient methods to extract physical information from noisy detector signals, yet the increasing rate and complexity of observations represent a growing challenge. Deep learning provides a powerful alternative to traditional inference, but existing neural models typically lack the flexibility to handle variations in data analysis settings. Such variations accommodate imperfect observations or are required for specialized tests, and could include changes in detector configurations, overall frequency ranges, or localized cuts. We introduce a flexible transformer-based architecture paired with a training strategy that enables adaptation to diverse analysis settings at inference time. Applied to parameter estimation, we demonstrate that a single flexible model, called Dingo-T1, can (i) analyze 48 gravitational-wave events from the third LIGO-Virgo-KAGRA Observing Run under a wide range of analysis configurations, (ii) enable systematic studies of how detector and frequency configurations impact inferred posteriors, and (iii) perform inspiral-merger-ringdown consistency tests probing general relativity. Dingo-T1 also improves median sample efficiency on real events from a baseline of 1.4% to 4.2%. Our approach thus demonstrates flexible and scalable inference with a principled framework for handling missing or incomplete data, key capabilities for current and next-generation observatories.
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