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Atul Prakash

12 accepted papers

2025

ELFS: Label-Free Coreset Selection with Proxy Training Dynamics

ICLR 2025poster

High-quality human-annotated data is crucial for modern deep learning pipelines, yet the human annotation process is both costly and time-consuming. Given a constrained human labeling budget, selecting an informative and representative data subset for labeling can significantly reduce human annotati…

Cited by 0SourcePDFScholar
2025

Test-Time Canonicalization by Foundation Models for Robust Perception

ICML 2025poster

Real-world visual perception requires invariance to diverse transformations, yet current methods rely heavily on specialized architectures or training on predefined augmentations, limiting generalization. We propose FoCal, a test-time, data-driven framework that achieves robust perception by leverag…

2025

What Really is a Member? Discrediting Membership Inference via Poisoning

NeurIPS 2025poster

Membership inference tests aim to determine whether a particular data point was included in a language model's training set. However, recent works have shown that such tests often fail under the strict definition of membership based on exact matching, and have suggested relaxing this definition to i…

Cited by 0SourceScholar
2024

CALICO: Self-Supervised Camera-LiDAR Contrastive Pre-training for BEV Perception

ICLR 2024poster

Perception is crucial in the realm of autonomous driving systems, where bird's eye view (BEV)-based architectures have recently reached state-of-the-art performance. The desirability of self-supervised representation learning stems from the expensive and laborious process of annotating 2D and 3D dat…

Cited by 13SourcePDFScholar
2024

Learn To be Efficient: Build Structured Sparsity in Large Language Models

NeurIPS 2024spotlight

Large Language Models (LLMs) have achieved remarkable success with their billion-level parameters, yet they incur high inference overheads. The emergence of activation sparsity in LLMs provides a natural approach to reduce this cost by involving only parts of the parameters for inference. However, e…

Cited by 14SourcePDFScholar
2024

PRP: Propagating Universal Perturbations to Attack Large Language Model Guard-Rails

ACL 2024long

Large language models (LLMs) are typically aligned to be harmless to humans. Unfortunately, recent work has shown that such models are susceptible to automated jailbreak attacks that induce them to generate harmful content. More recent LLMs often incorporate an additional layer of defense, a Guard M…

2023

Concept-based Explanations for Out-of-Distribution Detectors

ICML 2023poster

Out-of-distribution (OOD) detection plays a crucial role in ensuring the safe deployment of deep neural network (DNN) classifiers. While a myriad of methods have focused on improving the performance of OOD detectors, a critical gap remains in interpreting their decisions. We help bridge this gap by…

2023

Coverage-centric Coreset Selection for High Pruning Rates

ICLR 2023poster

One-shot coreset selection aims to select a representative subset of the training data, given a pruning rate, that can later be used to train future models while retaining high accuracy. State-of-the-art coreset selection methods pick the highest importance examples based on an importance metric and…

2021

MAZE: Data-Free Model Stealing Attack Using Zeroth-Order Gradient Estimation

CVPR 2021poster

High quality Machine Learning (ML) models are often considered valuable intellectual property by companies. Model Stealing (MS) attacks allow an adversary with black-box access to a ML model to replicate its functionality by training a clone model using the predictions of the target model for differ…

Cited by 203PDFcodeScholar
2021

Protecting DNNs from Theft using an Ensemble of Diverse Models

ICLR 2021poster

Several recent works have demonstrated highly effective model stealing (MS) attacks on Deep Neural Networks (DNNs) in black-box settings, even when the training data is unavailable. These attacks typically use some form of Out of Distribution (OOD) data to query the target model and use the predicti…

Cited by 37SourcePDFScholar
2020

Efficient Adversarial Training With Transferable Adversarial Examples

CVPR 2020poster

Adversarial training is an effective defense method to protect classification models against adversarial attacks. However, one limitation of this approach is that it can require orders of magnitude additional training time due to high cost of generating strong adversarial examples during training. I…

Cited by 156PDFcodeScholar
2018

Robust Physical-World Attacks on Deep Learning Visual Classification

CVPR 2018poster

Recent studies show that the state-of-the-art deep neural networks (DNNs) are vulnerable to adversarial examples, resulting from small-magnitude perturbations added to the input. Given that that emerging physical systems are using DNNs in safety-critical situations, adversarial examples could mislea…

Cited by 2927SourcePDFScholar