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Aleksandr Petiushko

7 accepted papers

2025

DiffScene: Diffusion-Based Safety-Critical Scenario Generation for Autonomous Vehicles

AAAI 2025technical

The field of Autonomous Driving (AD) has witnessed significant progress in recent years. Among the various challenges faced, the safety evaluation of autonomous vehicles (AVs) stands out as a critical concern. Traditional evaluation methods are both costly and inefficient, often requiring extensive…

Cited by 34SourcePDFScholar
2025

SafeAuto: Knowledge-Enhanced Safe Autonomous Driving with Multimodal Foundation Models

ICML 2025poster

Traditional autonomous driving systems often struggle to connect high-level reasoning with low-level control, leading to suboptimal and sometimes unsafe behaviors. Recent advances in multimodal large language models (MLLMs), which process both visual and textual data, offer an opportunity to unify p…

2022

CC-CERT: A Probabilistic Approach to Certify General Robustness of Neural Networks

AAAI 2022technical

In safety-critical machine learning applications, it is crucial to defend models against adversarial attacks --- small modifications of the input that change the predictions. Besides rigorously studied $ell_p$-bounded additive perturbations, semantic perturbations (e.g. rotation, translation) raise…

2022

Certified Robustness via Randomized Smoothing over Multiplicative Parameters of Input Transformations

IJCAI 2022poster

Currently the most popular method of providing robustness certificates is randomized smoothing where an input is smoothed via some probability distribution. We propose a novel approach to randomized smoothing over multiplicative parameters. Using this method we construct certifiably robust classifie…

Cited by 10SourcePDFScholar
2022

Nonparametric Uncertainty Quantification for Single Deterministic Neural Network

NeurIPS 2022accept

This paper proposes a fast and scalable method for uncertainty quantification of machine learning models' predictions. First, we show the principled way to measure the uncertainty of predictions for a classifier based on Nadaraya-Watson's nonparametric estimate of the conditional label distribution.…

2022

Quadric Hypersurface Intersection for Manifold Learning in Feature Space

AISTATS 2022poster

The knowledge that data lies close to a particular submanifold of the ambient Euclidean space may be useful in a number of ways. For instance, one may want to automatically mark any point far away from the submanifold as an outlier or to use the geometry to come up with a better distance metric. Man…

2022

Smoothed Embeddings for Certified Few-Shot Learning

NeurIPS 2022accept

Randomized smoothing is considered to be the state-of-the-art provable defense against adversarial perturbations. However, it heavily exploits the fact that classifiers map input objects to class probabilities and do not focus on the ones that learn a metric space in which classification is performe…