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分类依据与纠错

AI 根据所提供的论文材料归类:摘要明确以搜索量和历史金融数据预测次日股票收益类别,并进行预测组合回测,直接对应金融收益预测方向。

反馈分类问题

正在核对关联版本…

代码、数据与补充材料

正在核对对应版本的资源…

关注这篇论文的作者

利用搜索量预测次日股票收益:梯度提升决策树在标普100中的应用

研究问题
历史金融变量与 Google 搜索量能否预测标普100成分股次日收益超过指数中位数,并在组合回测中体现预测信息?
方法与思路
作者用梯度提升决策树学习滞后金融变量和搜索量与收益分类的关系,并据预测构建每日包含十只股票的组合。
材料陈述的贡献
摘要报告平均 AUC 为54.2%至56.7%,并展示未扣交易成本的组合回测,提供互联网行为数据的加工与预测思路。
阅读关注点
应核对训练测试的时间划分、搜索数据的实际可得时点、成分股选择及交易成本,并检验市场有效性解读的依据。
阅读边界
这是 arXiv 预印本,不能据此认定已同行评审或期刊接收;摘要明确未计交易成本,回测收益不能视为可实现净收益。

原文摘要

The internet has changed the way we live, work and take decisions. As it is the major modern resource for research, detailed data on internet usage exhibits vast amounts of behavioral information. This paper aims to answer the question whether this information can be facilitated to predict future returns of stocks on financial capital markets. In an empirical analysis it implements gradient boosted decision trees to learn relationships between abnormal returns of stocks within the S&P 100 index and lagged predictors derived from historical financial data, as well as search term query volumes on the internet search engine Google. Models predict the occurrence of day-ahead stock returns in excess of the index median. On a time frame from 2005 to 2017, all disparate datasets exhibit valuable information. Evaluated models have average areas under the receiver operating characteristic between 54.2% and 56.7%, clearly indicating a classification better than random guessing. Implementing a simple statistical arbitrage strategy, models are used to create daily trading portfolios of ten stocks and result in annual performances of more than 57% before transaction costs. With ensembles of different data sets topping up the performance ranking, the results further question the weak form and semi-strong form efficiency of modern financial capital markets. Even though transaction costs are not included, the approach adds to the existing literature. It gives guidance on how to use and transform data on internet usage behavior for financial and economic modeling and forecasting.

笔记与分组
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