NumHTML: Numeric-Oriented Hierarchical Transformer Model for Multi-task Financial Forecasting

• URL: http://arxiv.org/abs/2201.01770v1
• Date: Wed, 5 Jan 2022 10:17:02 GMT
• Title: NumHTML: Numeric-Oriented Hierarchical Transformer Model for Multi-task Financial Forecasting
• Authors: Linyi Yang, Jiazheng Li, Ruihai Dong, Yue Zhang, Barry Smyth
• Abstract summary: This paper describes a numeric-oriented hierarchical transformer model to predict stock returns and financial risk using multi-modal aligned earnings calls data. We present the results of a comprehensive evaluation of Num HTML against several state-of-the-art baselines using a real-world publicly available dataset.
• Score: 17.691653056521904
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Financial forecasting has been an important and active area of machine learning research because of the challenges it presents and the potential rewards that even minor improvements in prediction accuracy or forecasting may entail. Traditionally, financial forecasting has heavily relied on quantitative indicators and metrics derived from structured financial statements. Earnings conference call data, including text and audio, is an important source of unstructured data that has been used for various prediction tasks using deep earning and related approaches. However, current deep learning-based methods are limited in the way that they deal with numeric data; numbers are typically treated as plain-text tokens without taking advantage of their underlying numeric structure. This paper describes a numeric-oriented hierarchical transformer model to predict stock returns, and financial risk using multi-modal aligned earnings calls data by taking advantage of the different categories of numbers (monetary, temporal, percentages etc.) and their magnitude. We present the results of a comprehensive evaluation of NumHTML against several state-of-the-art baselines using a real-world publicly available dataset. The results indicate that NumHTML significantly outperforms the current state-of-the-art across a variety of evaluation metrics and that it has the potential to offer significant financial gains in a practical trading context.

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