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math.AG2022
Spectral Factorization of Rank-Deficient Rational Densities
Wenqi Cao, Anders Lindquist
Though there have been hundreds of methods on solving rational spectral factorization, most of them are based on a positive definite density matrix assumption. In this work, we pro…
cs.DC2022★ 1 cited
A Smart Contract based Crowdfunding Mechanism for Hierarchical Federated Learning
Hongze Liu, Jie Li, Shijing Yuan +2
Hierarchical Federated Learning (HFL) is introduced as a promising technique that allows model owners to fully exploit computational resources and bandwidth resources to train the…
math.DS2022
Dealing with collinearity in large-scale linear system identification using Bayesian regularization
Wenqi Cao, Gianluigi Pillonetto
We consider the identification of large-scale linear and stable dynamic systems whose outputs may be the result of many correlated inputs. Hence, severe ill-conditioning may affect…