4 citations · 8 across the 5 of their papers we have counts for
5 papers
On A Class of Greedy Sparse Recovery Algorithms
Gang Li, Qiuwei Li, Shuang Li +1
Sparse signal recovery deals with finding the sparsest solution of an under-determined linear system $\vx = \mQ\vs$. In this paper, we propose a novel greedy approach to addressing…
A Provable Splitting Approach for Symmetric Nonnegative Matrix Factorization
Xiao Li, Zhihui Zhu, Qiuwei Li +1
The symmetric Nonnegative Matrix Factorization (NMF), a special but important class of the general NMF, has found numerous applications in data analysis such as various clustering…
From the simplex to the sphere: Faster constrained optimization using the Hadamard parametrization
Qiuwei Li, Daniel McKenzie, Wotao Yin
The standard simplex in R^n, also known as the probability simplex, is the set of nonnegative vectors whose entries sum up to 1. They frequently appear as constraints in optimizati…
Operator Splitting for Learning to Predict Equilibria in Convex Games
Daniel McKenzie, Howard Heaton, Qiuwei Li +3
Systems of competing agents can often be modeled as games. Assuming rationality, the most likely outcomes are given by an equilibrium (e.g. a Nash equilibrium). In many practical s…
JFB: Jacobian-Free Backpropagation for Implicit Networks
Samy Wu Fung, Howard Heaton, Qiuwei Li +3
A promising trend in deep learning replaces traditional feedforward networks with implicit networks. Unlike traditional networks, implicit networks solve a fixed point equation to…