Yizhe Zhu

collaborators

3 papers

math.PR2026

Sharp spectral norm concentration and regularization of sparse random tensors

Zhixin Zhou, Yizhe Zhu

We prove sharp spectral-norm bounds and construct a mean-fitting regularization procedure for sparse random tensors of fixed order $k$ . For an $n \times \dots \times n$ tensor with i…

stat.ML2026

Achieving the Kesten-Stigum bound in the non-uniform hypergraph stochastic block model

Manuel Fernandez, Ludovic Stephan, Yizhe Zhu

We study the community detection problem in the non-uniform hypergraph stochastic block model (HSBM), where hyperedges of varying sizes coexist. This setting captures higher-order…

math.CV2026

Values of finite distortion: Reshetnyak's theorem, the Liouville theorem, and the Lusin (N) -property

Ilmari Kangasniemi, Jani Onninen, Yizhe Zhu

Let $Ω \subset R^{n}$ be a domain and $f \in W_{loc}^{1, n} (Ω, R^{n})$ . We say that $f$ has a value of finite distortion at $y_{0} \in R^{n}$ if there exist…