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http://dx.doi.org/10.6109/jkiice.2015.19.7.1593

Correlation Analysis of Social Sentiment and Stock Prices  

Yun, Hongwon (Department of Computer & Information Engineering, Silla University)
Abstract
In this paper, we analyze the correlation between social sentiment and stock prices. Polarity analysis is conducted for the stock prices plunging and soaring duration. And it is performed for its prior period. Using these results, we analyze the relationship between the social sentiment and stock prices. We collected the past data of Dow Jones Industrial Average and detected the period of plunging and soaring. On the basis of the detected time, the New York Times articles are collected and polarity analysis is conducted. Frequency of negative terms is decreased and it of positive terms is increased during the stock prices soaring. There is a little difference between the frequency of negative and positive terms in the previous stock prices plunging or soaring. According to the correlation analysis, it shows a positive correlation between social sentiment and stock prices in the period of plunging and soaring. A significant correlation is not appeared in the previous stock prices plunging or soaring.
Keywords
Sentiment analysis; Polarity analysis; Big data; Textual analysis;
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