arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2011.09052cs.CVcs.LGecon.EM
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可视化时间序列预测:一种图像驱动的方法

Visual Time Series Forecasting: An Image-driven Approach

J. P. Morgan AI Research(摩根大通AI研究院)

Srijan Sood, Zhen Zeng, Naftali Cohen, Tucker Balch, Manuela Veloso

摘要:

时间序列预测是智能体决策的基础。传统的方法依赖于统计方法来预测给定的过去数值。在实践中,最终用户通常依赖于图表和绘图等可视化来推理他们的预测。受从业者的启发,我们通过创建一个新颖的框架来重新想象这个主题,以产生视觉预测,类似于人类直观的方式。在这项工作中,我们利用深度学习的进步将时间序列预测领域扩展到视觉环境。我们将输入数据捕获为图像,并训练模型以生成后续图像。这种方法导致预测分布,而不是逐点值。我们研究了具有不同复杂程度的各种合成和真实数据集。实验结果表明,视觉预测对周期性数据是有效的,但对股票价格等不规则数据的预测效果较差。重要的是,当使用基于图像的评估指标时,我们发现所提出的视觉预测方法优于各种数值基线,包括ARIMA和我们方法的数值变化。我们展示了将基于视觉的方法纳入预测任务的好处-无论是预测的质量,以及可用于评估它们的指标。

英文摘要:

Time series forecasting is essential for agents to make decisions. Traditional approaches rely on statistical methods to forecast given past numeric values. In practice, end-users often rely on visualizations such as charts and plots to reason about their forecasts. Inspired by practitioners, we re-imagine the topic by creating a novel framework to produce visual forecasts, similar to the way humans intuitively do. In this work, we leverage advances in deep learning to extend the field of time series forecasting to a visual setting. We capture input data as an image and train a model to produce the subsequent image. This approach results in predicting distributions as opposed to pointwise values. We examine various synthetic and real datasets with diverse degrees of complexity. Our experiments show that visual forecasting is effective for cyclic data but somewhat less for irregular data such as stock price. Importantly, when using image-based evaluation metrics, we find the proposed visual forecasting method to outperform various numerical baselines, including ARIMA and a numerical variation of our method. We demonstrate the benefits of incorporating vision-based approaches in forecasting tasks -- both for the quality of the forecasts produced, as well as the metrics that can be used to evaluate them.

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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