Youjia Wang

collaborators

2 papers

math.PR2025

Group-averaged Markov chains: mixing improvement

Michael C. H. Choi, Youjia Wang

For Markov kernels $P$ on a general state space $X$ , we introduce a new class of averaged Markov kernels $P_{d a} (G, ν)$ of $P$ induced by a group $G$ that acts on $\mathca…

math.PR2024

Improving the convergence of Markov chains via permutations and projections

Michael C. H. Choi, Max Hird, Youjia Wang

This paper aims at improving the convergence to equilibrium of finite ergodic Markov chains via permutations and projections. First, we prove that a specific mixture of permuted Ma…