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Chongli Qin

8 accepted papers

2023

Feature Likelihood Divergence: Evaluating the Generalization of Generative Models Using Samples

NeurIPS 2023poster

The past few years have seen impressive progress in the development of deep generative models capable of producing high-dimensional, complex, and photo-realistic data. However, current methods for evaluating such models remain incomplete: standard likelihood-based metrics do not always apply and rar…

2020

A FRAMEWORK FOR ROBUSTNESS CERTIFICATION OF SMOOTHED CLASSIFIERS USING F-DIVERGENCES

ICLR 2020poster

Formal verification techniques that compute provable guarantees on properties of machine learning models, like robustness to norm-bounded adversarial perturbations, have yielded impressive results. Although most techniques developed so far require knowledge of the architecture of the machine learnin…

Cited by 64SourceScholar
2020

Achieving Robustness in the Wild via Adversarial Mixing With Disentangled Representations

CVPR 2020poster

Recent research has made the surprising finding that state-of-the-art deep learning models sometimes fail to generalize to small variations of the input. Adversarial training has been shown to be an effective approach to overcome this problem. However, its application has been limited to enforcing i…

Cited by 67PDFcodeScholar
2020

Training Generative Adversarial Networks by Solving Ordinary Differential Equations

NeurIPS 2020spotlight

The instability of Generative Adversarial Network (GAN) training has frequently been attributed to gradient descent. Consequently, recent methods have aimed to tailor the models and training procedures to stabilise the discrete updates. In contrast, we study the continuous-time dynamics induced by G…

2019

Adversarial Robustness through Local Linearization

NeurIPS 2019poster

Adversarial training is an effective methodology for training deep neural networks that are robust against adversarial, norm-bounded perturbations. However, the computational cost of adversarial training grows prohibitively as the size of the model and number of input dimensions increase. Further, t…

Cited by 367SourcePDFScholar
2019

Efficient Neural Network Verification with Exactness Characterization

UAI 2019poster

Remarkable progress has been made on verification of neural networks, i.e., showing that neural networks are provably consistent with specifications encoding properties like adversarial robustness. Recent methods developed for scalable neural network verification are based on computing an upper bou…

Cited by 35SourcePDFScholar
2019

Scalable Verified Training for Provably Robust Image Classification

ICCV 2019poster

Recent work has shown that it is possible to train deep neural networks that are provably robust to norm-bounded adversarial perturbations. Most of these methods are based on minimizing an upper bound on the worst-case loss over all possible adversarial perturbations. While these techniques show pro…

Cited by 214PDFScholar
2019

Verification of Non-Linear Specifications for Neural Networks

ICLR 2019poster

Prior work on neural network verification has focused on specifications that are linear functions of the output of the network, e.g., invariance of the classifier output under adversarial perturbations of the input. In this paper, we extend verification algorithms to be able to certify richer proper…

Cited by 50SourcePDFScholar