2 papers
cs.LG2026
Neural Nonlinear Shrinkage of Covariance Matrices for Minimum Variance Portfolio Optimization
Liusha Yang, Siqi Zhao, Shuqi Chai
This paper introduces a neural network-based nonlinear shrinkage estimator of covariance matrices for the purpose of minimum variance portfolio optimization. It is a hybrid approac…
cs.SD2025
Investigating training objective for flow matching-based speech enhancement
Liusha Yang, Ziru Ge, Gui Zhang +2
Speech enhancement(SE) aims to recover clean speech from noisy recordings. Although generative approaches such as score matching and Schrodinger bridge have shown strong effectiven…