241 citations · 815 across the 44 of their papers we have counts for
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3 papers · 1 filter
math.OC2010★ 10 cited
A Smoothing Stochastic Gradient Method for Composite Optimization
Qihang Lin, Xi Chen, Javier Pena
We consider the unconstrained optimization problem whose objective function is composed of a smooth and a non-smooth conponents where the smooth component is the expectation a rand…
stat.ML2010★ 34 cited
Graph-Structured Multi-task Regression and an Efficient Optimization Method for General Fused Lasso
Xi Chen, Seyoung Kim, Qihang Lin +2
We consider the problem of learning a structured multi-task regression, where the output consists of multiple responses that are related by a graph and the correlated response vari…
stat.ML2010★ 241 cited
Smoothing proximal gradient method for general structured sparse regression
Xi Chen, Qihang Lin, Seyoung Kim +2
We study the problem of estimating high-dimensional regression models regularized by a structured sparsity-inducing penalty that encodes prior structural information on either the…