Showing math.STShow all
2 papers · 1 filter
math.ST2025
Probabilistic PCA on tensors
Yaoming Zhen, Piotr Zwiernik
In probabilistic principal component analysis (PPCA), an observed vector is modeled as a linear transformation of a low-dimensional Gaussian factor plus isotropic noise. We general…
math.ST2024
Tensors in algebraic statistics
Marta Casanellas, Luis Sierra, Piotr Zwiernik
Tensors are ubiquitous in statistics and data analysis. The central object that links data science to tensor theory and algebra is that of a model with latent variables. We provide…