activity
20202026
most citedDefensiveDR: Defending against Adversarial Patches using Dimensionality Reduction

1 citations · 1 across the 11 of their papers we have counts for

collaborators

13 papers

cs.CR2026

A Survey of Adversarial Efficiency Degradation for Vision Transformer by Exploiting Input-adaptive Optimization

Anadi Goyal, Nandish Chattopadhyay, Anupam Chattopadhyay +1

Vision Transformers (ViTs) increasingly rely on input-adaptive inference, such as token pruning and early halting, to meet energy and latency budgets. This survey examines a recent…

cs.CR2026

MOAT: Model-Agnostic Randomized Transformations for preventing Efficiency Degradation Attacks on ViTs

Anadi Goyal, Nandish Chattopadhyay, Chandan Karfa +2

To adopt the Vision Transformers (ViTs) in resource-constrained environment, token pruning is widely used to reduce computational cost without impacting accuracy. However, adversar…

cs.CV2026

STRAP-ViT: Segregated Tokens with Randomized -- Transformations for Defense against Adversarial Patches in ViTs

Nandish Chattopadhyay, Anadi Goyal, Chandan Karfa +1

Adversarial patches are physically realizable localized noise, which are able to hijack Vision Transformers (ViT) self-attention, pulling focus toward a small, high-contrast region…

cs.CR2026

PatchBlock: A Lightweight Defense Against Adversarial Patches for Embedded EdgeAI Devices

Nandish Chattopadhyay, Abdul Basit, Amira Guesmi +3

Adversarial attacks pose a significant challenge to the reliable deployment of machine learning models in EdgeAI applications, such as autonomous driving and surveillance, which re…

cs.CV2025

A Survey of Adversarial Defenses in Vision-based Systems: Categorization, Methods and Challenges

Nandish Chattopadhyay, Abdul Basit, Bassem Ouni +1

Adversarial attacks have emerged as a major challenge to the trustworthy deployment of machine learning models, particularly in computer vision applications. These attacks have a v…

cs.LG2025

Learning Nonlinearity of Boolean Functions: An Experimentation with Neural Networks

Sriram Ranga, Nandish Chattopadhyay, Anupam Chattopadhyay

This paper investigates the learnability of the nonlinearity property of Boolean functions using neural networks. We train encoder style deep neural networks to learn to predict th…

cs.LG2025

Persistence of Backdoor-based Watermarks for Neural Networks: A Comprehensive Evaluation

Anh Tu Ngo, Chuan Song Heng, Nandish Chattopadhyay +1

Deep Neural Networks (DNNs) have gained considerable traction in recent years due to the unparalleled results they gathered. However, the cost behind training such sophisticated mo…

cs.CR2024

BlockDoor: Blocking Backdoor Based Watermarks in Deep Neural Networks

Yi Hao Puah, Anh Tu Ngo, Nandish Chattopadhyay +1

Adoption of machine learning models across industries have turned Neural Networks (DNNs) into a prized Intellectual Property (IP), which needs to be protected from being stolen or…

cs.LG2024

Adversarial Attacks and Dimensionality in Text Classifiers

Nandish Chattopadhyay, Atreya Goswami, Anupam Chattopadhyay

Adversarial attacks on machine learning algorithms have been a key deterrent to the adoption of AI in many real-world use cases. They significantly undermine the ability of high-pe…

cs.CV2024

Anomaly Unveiled: Securing Image Classification against Adversarial Patch Attacks

Nandish Chattopadhyay, Amira Guesmi, Muhammad Shafique

Adversarial patch attacks pose a significant threat to the practical deployment of deep learning systems. However, existing research primarily focuses on image pre-processing defen…

cs.CR2023★ 1 cited

DefensiveDR: Defending against Adversarial Patches using Dimensionality Reduction

Nandish Chattopadhyay, Amira Guesmi, Muhammad Abdullah Hanif +2

Adversarial patch-based attacks have shown to be a major deterrent towards the reliable use of machine learning models. These attacks involve the strategic modification of localize…

cs.CR2023

ODDR: Outlier Detection & Dimension Reduction Based Defense Against Adversarial Patches

Nandish Chattopadhyay, Amira Guesmi, Muhammad Abdullah Hanif +2

Adversarial attacks present a significant challenge to the dependable deployment of machine learning models, with patch-based attacks being particularly potent. These attacks intro…

cs.AI2020

Spatially Correlated Patterns in Adversarial Images

Nandish Chattopadhyay, Lionell Yip En Zhi, Bryan Tan Bing Xing +1

Adversarial attacks have proved to be the major impediment in the progress on research towards reliable machine learning solutions. Carefully crafted perturbations, imperceptible t…