Madan Lal

Work place: Department of Computer Science and Engineering, Punjabi University, Patiala, 147002, India

E-mail: madanlal@pbi.ac.in

Website:

Research Interests: Image Processing

Biography

Dr. Madan Lal is currently working as an Assistant Professor in the Department of Computer Science and Engineering at Punjabi University Campus, Patiala. He has received a Bachelor of Engineering Degree in Computer Science and Engineering from Guru Nanak Dev University, Amritsar and obtained M.Tech. and PhD Degrees in Computer Engineering from Punjabi University, Patiala. His experience of 25 years in teaching and of 18 years in research has benefitted his students apparently. He has published more than 40 papers in reputed international and national journal, seminars and conferences. His research interest is in the fields of Digital Image Processing, Image Processing in healthcare, Machine Learning and its applications. He has guided more than twenty post graduate research scholars and currently six PhD research scholars are working under his supervision.

Author Articles
A Hybrid Deep Learning Ensemble with Wavelet Feature Extraction for Stock Market Prediction

By Priya Sidhu Himanshu Aggarwal Madan Lal

DOI: https://doi.org/10.5815/ijisa.2026.04.02, Pub. Date: 8 Aug. 2026

Stock market forecasting is not an easy task to undertake because of the volatility and the price movements which are non-stationary. In this work, the author suggests the hybrid deep learning architecture that combines the use of Discrete Wavelet Transform (DWT)-based feature extraction with multi-architecture aggregation with LSTM, GRU, RNN, and CNN models. The model was tested on six Indian stocks based on ten-years of daily historical returns under a rolling walk-forward validation procedure, with the model being trained on five-year window and tested on out of sample periods. It has been shown experimentally that the hybrid aggregation method gives smaller prediction errors than individual architectures. Using the proposed model on the NIFTY 50 index, the RMSE was 0.2102, and the directional accuracy was 65.18, which is a better predictive stability. An ablation analysis also supports the fact that wavelet-based pre-processing helps to reduce errors and increase consistency of trends. These results indicate that wavelet-based feature extraction with heterogeneous deep learning models can be more robust when used in daily stock forecasting. In the future, statistical significance test and trading simulations based on costs may be introduced to the work to conduct additional testing of their practical relevance.

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