Abstract
AbstractMedia sentiment in the stock market affects investors’ behaviors and the operation of the stock market. Meanwhile, the development of data mining and artificial intelligence makes it possible to study massive stock market news on the Internet. In order to study media sentiment in the stock market, this paper collected the stock market news of 42 constituent stocks of China Securities 100 index in 2018 from Sina News. Firstly, we constructed financial news sentiment classifier based on word2vec and support machine vector (SVM). Then, we created three new daily sentiment indexes of individual stock by using the classification results. Finally, linear regression models were built to explore their relationship with the logarithmic trading volume, turnover, yield and volatility of individual stocks. The accuracy of financial news sentiment classifier was 86%, and the regression models could explain the influence of stock market media sentiment on some indicators of stock market to some extent. It was concluded that the financial news sentiment classifier based on word2vec and SVM works well. In addition, choosing the appropriate method to convert the word vector into the text vector has a great impact on the model effect and the simple average method performed better in this paper. At the same time, media sentiment has effects on the stock market. The impacts of negative and positive sentiment on logarithmic trading volume and turnover are positive. The positive impact of neutral sentiment on turnover is weaker than that of positive and negative sentiment. KeywordsMedia sentimentStock marketSentiment analysisWord2vecSupport vector machineLinear regression
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.