Academic Journal of Computing & Information Science, 2022, 5(11); doi: 10.25236/AJCIS.2022.051102.
Wenxuan Qiu, Hongye Cai
College of Mathematics and Statistic, Shenzhen University, Shenzhen, 518060, China
Stock forecasting has always been the center of the financial market. This paper uses the Discrete Hidden Markov Model (HMM) to predict stock price. The initial data of stock price is denoised by wavelet, and the denoised data is processed as the input data of HMM, and the number of implicit states that make the model most robust is determined by using OEHS criteria. The model is trained by Baum- Welch-Algo algorithm to obtain the correlation matrix parameters, and then the implicit state with the maximum probability is obtained by the Viterbi algorithm. This paper also introduces the Voting Strategy to improve the probability of accurate prediction. Finally, according to the Observation emission matrix, the probability distribution of the return rate of the next day is obtained, and the stock price is obtained. The accuracy of the predicted value is tested by MAPE. The experimental results show that the Discrete Hidden Markov model can better predict the future stock price trend. The accuracy of the predicted value was tested by MAPE, and the value was 0.0284.
Vanke A; HMM model; Wavelet denoising; Baumwelchalgo algorithm
Wenxuan Qiu, Hongye Cai. Stock Price Prediction Based on Discrete Hidden Markov Chain. Academic Journal of Computing & Information Science (2022), Vol. 5, Issue 11: 10-17. https://doi.org/10.25236/AJCIS.2022.051102.
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