arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.09963q-fin.STcs.CEcs.LGq-fin.RM
收藏

动态交易策略的波动率结构聚类

Structural clustering of volatility regimes for dynamic trading strategies

University of Sydney(悉尼大学);University of Melbourne(墨尔本大学);Yau Mathematical Sciences Center, Tsinghua University(清华大学丘成桐数学科学中心)

Arjun Prakash, Nick James, Max Menzies, Gilad Francis

摘要:

本文提出了一种新的方法,通过对非平稳金融时间序列的波动结构进行无监督学习来确定波动结构的个数。我们使用变点检测将一个时间序列划分为局部平稳的段,然后计算段分布之间的距离矩阵。通过优化程序将这些段聚类为学习到的离散波动率状态。使用这个框架,我们确定了金融指数,大盘股,交易所交易基金和货币对的波动率聚集结构。我们的方法克服了严格的假设,实现许多参数的政权切换模型,同时有效地提取时间序列到几个特征的行为。我们的研究结果提供了显着的简化这些时间序列和一个强有力的描述性的分析先前的行为波动。最后,我们创建并验证了一个动态的交易策略,学习时间序列的当前分布和过去的制度之间的最佳匹配,从而在目前的在线风险规避决策。

英文摘要:

We develop a new method to find the number of volatility regimes in a nonstationary financial time series by applying unsupervised learning to its volatility structure. We use change point detection to partition a time series into locally stationary segments and then compute a distance matrix between segment distributions. The segments are clustered into a learned number of discrete volatility regimes via an optimization routine. Using this framework, we determine a volatility clustering structure for financial indices, large-cap equities, exchange-traded funds and currency pairs. Our method overcomes the rigid assumptions necessary to implement many parametric regime-switching models, while effectively distilling a time series into several characteristic behaviours. Our results provide significant simplification of these time series and a strong descriptive analysis of prior behaviours of volatility. Finally, we create and validate a dynamic trading strategy that learns the optimal match between the current distribution of a time series and its past regimes, thereby making online risk-avoidance decisions in the present.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑