31 citations
4 papers
Perfect Reconstruction Two-Channel Filter Banks on Arbitrary Graphs
Junxia You, Lihua Yang
This paper extends the existing theory of perfect reconstruction two-channel filter banks from bipartite graphs to non-bipartite graphs. By generalizing the concept of downsampling…
Spline-Like Wavelet Filterbanks with Perfect Reconstruction on Arbitrary Graphs
Junxia You, Lihua Yang
In this work, we propose a class of spline-like wavelet filterbanks for graph signals. These filterbanks possess the properties of critical sampling and perfect reconstruction. Bes…
BROADCAST: Reducing Both Stochastic and Compression Noise to Robustify Communication-Efficient Federated Learning
Heng Zhu, Qing Ling
Communication between workers and the master node to collect local stochastic gradients is a key bottleneck in a large-scale federated learning system. Various recent works have pr…
Can Primal Methods Outperform Primal-dual Methods in Decentralized Dynamic Optimization?
Kun Yuan, Wei Xu, Qing Ling
In this paper, we consider the decentralized dynamic optimization problem defined over a multi-agent network. Each agent possesses a time-varying local objective function, and all…