Search Results for author: Zuheng Xu

Found 7 papers, 7 papers with code

Turning Waste into Wealth: Leveraging Low-Quality Samples for Enhancing Continuous Conditional Generative Adversarial Networks

1 code implementation20 Aug 2023 Xin Ding, Yongwei Wang, Zuheng Xu

Although Negative Data Augmentation (NDA) effectively enhances unconditional and class-conditional GANs by introducing anomalies into real training images, guiding the GANs away from low-quality outputs, its impact on CcGANs is limited, as it fails to replicate negative samples that may occur during the CcGAN sampling.

Data Augmentation

MixFlows: principled variational inference via mixed flows

2 code implementations16 May 2022 Zuheng Xu, Naitong Chen, Trevor Campbell

This work presents mixed variational flows (MixFlows), a new variational family that consists of a mixture of repeated applications of a map to an initial reference distribution.

Variational Inference

Bayesian inference via sparse Hamiltonian flows

1 code implementation11 Mar 2022 Naitong Chen, Zuheng Xu, Trevor Campbell

A Bayesian coreset is a small, weighted subset of data that replaces the full dataset during Bayesian inference, with the goal of reducing computational cost.

Bayesian Inference

The computational asymptotics of Gaussian variational inference and the Laplace approximation

1 code implementation13 Apr 2021 Zuheng Xu, Trevor Campbell

Gaussian variational inference and the Laplace approximation are popular alternatives to Markov chain Monte Carlo that formulate Bayesian posterior inference as an optimization problem, enabling the use of simple and scalable stochastic optimization algorithms.

Bayesian Inference Stochastic Optimization +1

Distilling and Transferring Knowledge via cGAN-generated Samples for Image Classification and Regression

2 code implementations7 Apr 2021 Xin Ding, Yongwei Wang, Zuheng Xu, Z. Jane Wang, William J. Welch

Knowledge distillation (KD) has been actively studied for image classification tasks in deep learning, aiming to improve the performance of a student based on the knowledge from a teacher.

General Classification Image Classification +2

Bayesian Pseudocoresets

1 code implementation NeurIPS 2020 Dionysis Manousakas, Zuheng Xu, Cecilia Mascolo, Trevor Campbell

Standard Bayesian inference algorithms are prohibitively expensive in the regime of modern large-scale data.

Bayesian Inference

Continuous Conditional Generative Adversarial Networks: Novel Empirical Losses and Label Input Mechanisms

1 code implementation ICLR 2021 Xin Ding, Yongwei Wang, Zuheng Xu, William J. Welch, Z. Jane Wang

This work proposes the continuous conditional generative adversarial network (CcGAN), the first generative model for image generation conditional on continuous, scalar conditions (termed regression labels).

Generative Adversarial Network Image Generation +1

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