Dazi Li

A sequential feature extraction method based on discrete wavelet transform, phase space reconstruction, and singular value decomposition and an improved extreme learning machine for rolling bearing fault diagnosis

2017 · Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering

A novel fault diagnosis approach based on a combination of discrete wavelet transform, phase space reconstruction, singular value decomposition, and improved extreme learning machine is presented in rolling bearing fault identification and classification. The proposed …

Online Sparse Temporal Difference Learning Based on Nested Optimization and Regularized Dual Averaging

2021 · IEEE Transactions on Systems Man and Cybernetics Systems

In policy evaluation of reinforcement learning tasks, the temporal difference (TD) learning with value function approximation has been widely studied. However, feature representation has a decisive influence on both accuracy of value function approximation and …