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arXiv 2106.02522q-fin.STcs.CYcs.LG
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价格图:利用金融时间序列的结构信息进行股票预测

Price graphs: Utilizing the structural information of financial time series for stock prediction

Beihang University(北京航空航天大学)

Junran Wu, Ke Xu, Xueyuan Chen, Shangzhe Li, Jichang Zhao

摘要:

大量的研究工作致力于在股票预测中利用深度神经网络。虽然长期依赖性和混沌属性仍然是两个主要问题,降低了最先进的深度学习模型在预测未来价格趋势方面的性能。在这项研究中,我们提出了一个新的框架来解决这两个问题。具体而言,在将时间序列转换为复杂网络方面,我们将市场价格序列转换为图形。然后,结构信息,指的是时间点之间的关联和节点的权重,从映射图中提取,以解决有关长程依赖和混沌性质的问题。我们采用图嵌入来表示时间点之间的关联作为预测模型的输入。节点权重被用作先验知识,以增强时间注意力的学习。我们提出的框架的有效性进行了验证,使用真实世界的股票数据,我们的方法获得了最好的性能在几个国家的最先进的基准。此外,在进行的交易模拟中,我们的框架进一步获得了最高的累积利润。我们的研究结果补充了复杂网络方法在金融领域的现有应用,并为金融市场决策支持方面的投资应用提供了深刻的影响。

英文摘要:

Great research efforts have been devoted to exploiting deep neural networks in stock prediction. While long-range dependencies and chaotic property are still two major issues that lower the performance of state-of-the-art deep learning models in forecasting future price trends. In this study, we propose a novel framework to address both issues. Specifically, in terms of transforming time series into complex networks, we convert market price series into graphs. Then, structural information, referring to associations among temporal points and the node weights, is extracted from the mapped graphs to resolve the problems regarding long-range dependencies and the chaotic property. We take graph embeddings to represent the associations among temporal points as the prediction model inputs. Node weights are used as a priori knowledge to enhance the learning of temporal attention. The effectiveness of our proposed framework is validated using real-world stock data, and our approach obtains the best performance among several state-of-the-art benchmarks. Moreover, in the conducted trading simulations, our framework further obtains the highest cumulative profits. Our results supplement the existing applications of complex network methods in the financial realm and provide insightful implications for investment applications regarding decision support in financial markets.

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。

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