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arXiv 2303.09323q-fin.STcs.CVcs.LG
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股票趋势预测:一种语义分割方法

Stock Trend Prediction: A Semantic Segmentation Approach

University of California in Irvine(加州大学欧文分校)

Shima Nabiee, Nader Bagherzadeh

摘要:

市场财务预测是深度学习的一个趋势领域。深度学习模型能够解决股票市场数据中的经典挑战,例如其极其复杂的动态特性以及长期的时间相关性。为了捕捉这些时间序列之间的时间关系,递归神经网络。然而,循环模型很难学会跟踪长期信息。卷积神经网络已被用于更好地捕捉动态并提取短期和长期预测的特征。然而,语义分割及其精心设计的全卷积网络从未被研究用于时间序列密集分类。我们提出了一种新的方法来预测长期的每日股票价格变化趋势与完全2D卷积编码器-解码器。我们生成的输入框架与每日价格的时间框架T天。其目的是通过对当前价格框架进行像素分类来预测未来趋势。我们提出了一种分层的CNN结构,使用Atrous空间金字塔池块并行地将多个价格帧编码为多尺度潜在表示,并在解码阶段考虑时间粗特征堆栈。CNN的分层结构使其能够有效地捕获长期和短期的时间关系。已经研究了通过递增并行编码器增加输入时间范围的效果,其中输出分割掩模发生了有趣且实质性的变化。我们在未来20天内实现了联合趋势预测的整体准确度和AUC分别为78.18和0.88,超过了其他语义分割方法。我们将我们提出的模型与几个专门为技术分析设计的深度模型进行了比较,发现对于不同的产出范围,我们提出的模型优于其他模型。

英文摘要:

Market financial forecasting is a trending area in deep learning. Deep learning models are capable of tackling the classic challenges in stock market data, such as its extremely complicated dynamics as well as long-term temporal correlation. To capture the temporal relationship among these time series, recurrent neural networks are employed. However, it is difficult for recurrent models to learn to keep track of long-term information. Convolutional Neural Networks have been utilized to better capture the dynamics and extract features for both short- and long-term forecasting. However, semantic segmentation and its well-designed fully convolutional networks have never been studied for time-series dense classification. We present a novel approach to predict long-term daily stock price change trends with fully 2D-convolutional encoder-decoders. We generate input frames with daily prices for a time-frame of T days. The aim is to predict future trends by pixel-wise classification of the current price frame. We propose a hierarchical CNN structure to encode multiple price frames to multiscale latent representation in parallel using Atrous Spatial Pyramid Pooling blocks and take that temporal coarse feature stacks into account in the decoding stages. Our hierarchical structure of CNNs makes it capable of capturing both long and short-term temporal relationships effectively. The effect of increasing the input time horizon via incrementing parallel encoders has been studied with interesting and substantial changes in the output segmentation masks. We achieve overall accuracy and AUC of %78.18 and 0.88 for joint trend prediction over the next 20 days, surpassing other semantic segmentation approaches. We compared our proposed model with several deep models specifically designed for technical analysis and found that for different output horizons, our proposed models outperformed other models.

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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