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Optimizing Stock Price Prediction via Macro context and Filter-DQN Framework

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2025, 30(1), pp.41-51
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science
  • Received : December 5, 2024
  • Accepted : December 30, 2024
  • Published : January 31, 2025

Jean-Ho Kim 1 Eun-Hong Park 1 Ha Young Kim 1

1연세대학교

Accredited

ABSTRACT

The Korea Composite Stock Price Index exhibits high sensitivity to global market conditions, as net exports form a conerstone of the economic structure in Korea. However, most existing studies on stock price prediction limited in two key aspects: First, they primarily focus on indicators within the domestic market, thereby omitted the influence of global market dynamics. Second, they lack of thorough consideration of feature selection methods, which hinders performance and efficiency of deep prediction models in data-hungry financial time series. In this paper, we propose extended stock data that integrates stock market indicators from major export destinations along with macroeconomic variables and Filter-DQN, a novel feature selection method that incorporates mutual information theory and reinforcement learning approach. The proposed method enhance both prediction performance and computational efficiency by effectively filtering out redundant variables. Experimental results demonstrate that the Filter-DQN method improved performance of baseline models by 8.28%, 45.28%, compared to full variables and naive mutual information based selection, respectively. Futhermore, the reduced dimensionality of variables leads to 2.6% reduction in computational cost.

Citation status

* References for papers published after 2023 are currently being built.

This paper was written with support from the National Research Foundation of Korea.