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arXiv 2102.08189q-fin.STcs.LGstat.AP
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通过深度学习研究加密货币价格分类中的技术交易和社交媒体指标

On Technical Trading and Social Media Indicators in Cryptocurrencies' Price Classification Through Deep Learning

University of Cagliari(卡利亚里大学);Brunel University(布鲁内尔大学);University College London(伦敦大学学院)

Marco Ortu, Nicola Uras, Claudio Conversano, Giuseppe Destefanis, Silvia Bartolucci

摘要:

这项工作旨在使用深度学习算法分析2017年1月至2021年1月期间观察到的每小时和每日数据的加密货币价格走势的可预测性。在我们的实验中,我们使用了三组特征:技术指标、交易指标和社交媒体指标,考虑了仅包含技术指标的限制模型和包含技术指标、交易指标和社交媒体指标的无限制模型。我们验证了对交易和社交媒体指标以及经典技术变量(如价格回报)的考虑是否会导致加密货币价格变化预测的显着改善。我们对两种数量和价值最高的加密货币(在研究时)进行了研究:比特币和以太坊。我们实现了四种不同的机器学习算法,通常用于时间序列分类问题:多层感知器(MLP),卷积神经网络(CNN),长短期记忆(LSTM)神经网络和注意力长短期记忆(ALSTM)。我们设计的实验使用先进的引导技术来考虑测试样本的方差问题,这使我们能够评估模型性能的更可靠的估计。此外,网格搜索技术被用来找到最好的超参数值为每个实现的算法。研究表明,基于小时频率的结果,无限制的模型优于有限制的。在经典技术指标中添加交易指标提高了比特币和以太坊价格变化预测的准确性,准确性从限制模型的51-55%提高到无限制模型的67-84%。

英文摘要:

This work aims to analyse the predictability of price movements of cryptocurrencies on both hourly and daily data observed from January 2017 to January 2021, using deep learning algorithms. For our experiments, we used three sets of features: technical, trading and social media indicators, considering a restricted model of only technical indicators and an unrestricted model with technical, trading and social media indicators. We verified whether the consideration of trading and social media indicators, along with the classic technical variables (such as price's returns), leads to a significative improvement in the prediction of cryptocurrencies price's changes. We conducted the study on the two highest cryptocurrencies in volume and value (at the time of the study): Bitcoin and Ethereum. We implemented four different machine learning algorithms typically used in time-series classification problems: Multi Layers Perceptron (MLP), Convolutional Neural Network (CNN), Long Short Term Memory (LSTM) neural network and Attention Long Short Term Memory (ALSTM). We devised the experiments using the advanced bootstrap technique to consider the variance problem on test samples, which allowed us to evaluate a more reliable estimate of the model's performance. Furthermore, the Grid Search technique was used to find the best hyperparameters values for each implemented algorithm. The study shows that, based on the hourly frequency results, the unrestricted model outperforms the restricted one. The addition of the trading indicators to the classic technical indicators improves the accuracy of Bitcoin and Ethereum price's changes prediction, with an increase of accuracy from a range of 51-55% for the restricted model, to 67-84% for the unrestricted model.

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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