Vector quantization with error uniformly distributed over an arbitrary set

CW Ling, CT Li - IEEE Transactions on Information Theory, 2024 - ieeexplore.ieee.org
For uniform scalar quantization, the error distribution is approximately a uniform distribution
over an interval (which is also a 1-dimensional ball). Nevertheless, for lattice vector …

Channel Simulation: Theory and Applications to Lossy Compression and Differential Privacy

CT Li - Foundations and Trends® in Communications and …, 2024 - nowpublishers.com
One-shot channel simulation (or channel synthesis) has seen increasing applications in
lossy compression, differential privacy and machine learning. In this setting, an encoder …

Gaussian Channel Simulation with Rotated Dithered Quantization

S Kobus, L Theis, D Gündüz - 2024 IEEE International …, 2024 - ieeexplore.ieee.org
Channel simulation involves generating a sample Y from the conditional distribution P_Y|X,
where X is a remote realization sampled from P_X. This paper introduces a novel approach …

P2CEFL: Privacy-Preserving and Communication Efficient Federated Learning with Sparse Gradient and Dithering Quantization

G Wang, Q Qi, R Han, L Bai… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
Federated learning (FL) offers a promising framework for obtaining a global model by
aggregating trained parameters from participating clients without transmitting their local …

Universal Sample Coding

S Kobus, TY Tung, D Gunduz - The Thirty-eighth Annual …, 2024 - openreview.net
In this work, we study the problem of communicating multiple samples from an unknown
probability distribution using as few bits as possible. This is a generalization of the channel …

Communication-efficient federated learning based on compressed sensing and ternary quantization

J Zheng, J Tang - Applied Intelligence, 2025 - Springer
Most existing work on Federated Learning (FL) transmits full-precision weights, which
contain a significant amount of redundant information, leading to a substantial …

Universal Exact Compression of Differentially Private Mechanisms

Y Liu, WN Chen, A Özgür, CT Li - arXiv preprint arXiv:2405.20782, 2024 - arxiv.org
To reduce the communication cost of differential privacy mechanisms, we introduce a novel
construction, called Poisson private representation (PPR), designed to compress and …

The Rate-Distortion-Perception Trade-off: The Role of Private Randomness

Y Hamdi, AB Wagner, D Gündüz - arXiv preprint arXiv:2404.01111, 2024 - arxiv.org
In image compression, with recent advances in generative modeling, the existence of a
trade-off between the rate and the perceptual quality (realism) has been brought to light …

Rejection-Sampled Universal Quantization for Smaller Quantization Errors

CW Ling, CT Li - arXiv preprint arXiv:2402.03030, 2024 - arxiv.org
We construct a randomized vector quantizer which has a smaller maximum error compared
to all known lattice quantizers with the same entropy for dimensions 5, 6,..., 48, and also has …