3 citations · 5 across the 2 of their papers we have counts for
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stat.ML2020★ 3 cited
Structures of Spurious Local Minima in -means
Wei Qian, Yuqian Zhang, Yudong Chen
-means clustering is a fundamental problem in unsupervised learning. The problem concerns finding a partition of the data points into clusters such that the within-cluster v…
stat.ML2019★ 2 cited
Global Convergence of Least Squares EM for Demixing Two Log-Concave Densities
Wei Qian, Yuqian Zhang, Yudong Chen
This work studies the location estimation problem for a mixture of two rotation invariant log-concave densities. We demonstrate that Least Squares EM, a variant of the EM algorithm…