3 papers
math.NA2025
Tensor Density Estimator by Convolution-Deconvolution
Yifan Peng, Siyao Yang, Yuehaw Khoo +1
We propose a linear algebraic framework for performing density estimation. It consists of three simple steps: convolving the empirical distribution with certain smoothing kernels t…
math.NA2025
Optimization-Free Diffusion Model -- A Perturbation Theory Approach
Yuehaw Khoo, Mathias Oster, Yifan Peng
Diffusion models have emerged as a powerful framework in generative modeling, typically relying on optimizing neural networks to estimate the score function via forward SDE simulat…
stat.ML2025
Multivariate Density Estimation via Variance-Reduced Sketching
Yifan Peng, Yuehaw Khoo, Daren Wang
Multivariate density estimation is of great interest in various scientific and engineering disciplines. In this work, we introduce a new framework called Variance-Reduced Sketching…