用拓扑与神经网络方法检测加拿大股市异常,发现全局拓扑特征有效。
Financial Anomaly Detection for the Canadian Market
- 结合拓扑数据分析与神经网络模型识别市场异常
- 神经网络和拓扑方法在TSX-60上表现最优,准确识别重大金融压力事件
- 适合关注金融市场风险监测的研究者与量化分析师
本文评估三类方法在检测金融异常中的表现:拓扑数据分析(TDA)、主成分分析(PCA)和基于神经网络的方法。将这些方法应用于TSX-60数据,以识别加拿大股市中的重大金融压力事件。结果表明,基于神经网络的方法(如GlocalKD和One-Shot GIN(E))以及拓扑数据分析方法表现最佳。TDA在检测金融异常中的有效性说明,全局拓扑特性对区分金融压力事件具有重要意义。
原文摘要 · Abstract (English)
In this work we evaluate the performance of three classes of methods for detecting financial anomalies: topological data analysis (TDA), principal component analyis (PCA), and Neural Network-based approaches. We apply these methods to the TSX-60 data to identify major financial stress events in the Canadian stock market. We show how neural network-based methods (such as GlocalKD and One-Shot GIN(E)) and TDA methods achieve the strongest performance. The effectiveness of TDA in detecting financial anomalies suggests that global topological properties are meaningful in distinguishing financial stress events.
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