基于新闻和搜索查询信息预测俄罗斯宏观经济指标

Filipp Ulyankin
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引用次数: 2

摘要

现代经济文献以相当多的各种经济活动指标为特征。其中一些是基于民意调查(“手动”指数),而另一些是基于来自互联网的非结构化数据(“自动”指数)。然而,这些方法中哪一种是最有效的问题仍然悬而未决。在本文中,我们比较了几种不同的经济活动指标的解释能力和预测能力。我们使用机器学习方法构建“自动”索引。搜索查询、新闻文章和社交媒体新闻帖子下的用户评论被用作源数据。对所得到的经济活动指数的分析表明,搜索指数和新闻指数以及格兰杰原因“手动”指数也能更好地解释和预测所选研究的宏观经济变量集。通过当前经济活动指数对宏观经济指标的当前值具有良好的解释力,而宏观经济统计数据的输出滞后,使其适合于临近预报。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Forecasting Russian Macroeconomic Indicators Based on Information from News and Search Queries
Modern economic literature features quite a number of various indices of economic activity. Some of them are based on public opinion polls (‘manual’ indices), while others are based on unstructured data from the Internet (‘automatic’ indices). However, the question as to which of these approaches is the most effective remains open. In this paper, we compare several different indices of economic activity in terms of their explanatory and predictive power. We build ‘automatic’ indices using machine learning methods. Search queries, news articles and user comments under news posts from social media are used as source data. The analysis of the resulting indices of economic activity shows that the search and news indices Granger-cause ‘manual’ indices and also better explain and predict the set of macroeconomic variables selected for research. The good explanatory power of the current values of macroeconomic indicators by means of current indices of economic activity with a lag in the output of macroeconomic statistics makes them suitable for nowcasting.
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