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使用自然语言处理和深度学习分析新闻情绪。

Analysis of news sentiments using natural language processing and deep learning.

作者信息

Vicari Mattia, Gaspari Mauro

机构信息

University of Bologna, Bologna, Italy.

Department of Computer Science and Engineering, University of Bologna, Bologna, Italy.

出版信息

AI Soc. 2021;36(3):931-937. doi: 10.1007/s00146-020-01111-x. Epub 2020 Nov 30.

Abstract

This paper investigates if and to what point it is possible to trade on news sentiment and if deep learning (DL), given the current hype on the topic, would be a good tool to do so. DL is built explicitly for dealing with significant amounts of data and performing complex tasks where automatic learning is a necessity. Thanks to its promise to detect complex patterns in a dataset, it may be appealing to those investors that are looking to improve their trading process. Moreover, DL and specifically LSTM seem a good pick from a linguistic perspective too, given its ability to "remember" previous words in a sentence. After having explained how DL models are built, we will use this tool for forecasting the market sentiment using news headlines. The prediction is based on the Dow Jones industrial average by analyzing 25 daily news headlines available between 2008 and 2016, which will then be extended up to 2020. The result will be the indicator used for developing an algorithmic trading strategy. The analysis will be performed on two specific cases that will be pursued over five time-steps and the testing will be developed in real-world scenarios.

摘要

本文研究是否以及在何种程度上可以依据新闻情绪进行交易,以及鉴于当前对深度学习(DL)这一主题的炒作,它是否会是进行此类交易的一个好工具。深度学习是专门为处理大量数据以及执行自动学习成为必要的复杂任务而构建的。由于它有望在数据集中检测复杂模式,对于那些希望改进其交易过程的投资者来说可能颇具吸引力。此外,从语言学角度来看,深度学习尤其是长短期记忆网络(LSTM)似乎也是一个不错的选择,因为它能够“记住”句子中先前的词汇。在解释了深度学习模型是如何构建之后,我们将使用这个工具通过新闻标题来预测市场情绪。该预测基于道琼斯工业平均指数,通过分析2008年至2016年期间的25条每日新闻标题进行,随后将时间范围扩展至2020年。结果将作为用于制定算法交易策略的指标。分析将在两个特定案例上进行,这些案例将在五个时间步长内展开,并且测试将在实际场景中进行。

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