activity
20242026
most citedThe Chilling: Identifying Strategic Antisocial Behavior Online and Examining the Impact on Journalists

1 citations · 1 across the 8 of their papers we have counts for

collaborators

9 papers

cs.AI2026

You Can't Have It Both Ways: Concept Entanglement Limits Diffusion Model Unlearning

Yian Wang, Ali Ebrahimpour-Boroojeny, Hari Sundaram +1

Concept unlearning in text-to-image diffusion models aims to suppress a target concept (e.g., \texttt{horse}) while preserving related but distinct content (e.g., \texttt{donkey}),…

cs.AI2026

State Contamination in Memory-Augmented LLM Agents

Yian Wang, Agam Goyal, Yuen Chen +1

LLM agents increasingly rely on persistent state, including transcripts, summaries, retrieved context, and memory buffers, to support long-horizon interaction. This makes safety de…

cs.LG2025

DIVEBATCH: Accelerating Model Training Through Gradient-Diversity Aware Batch Size Adaptation

Yuen Chen, Yian Wang, Hari Sundaram

The goal of this paper is to accelerate the training of machine learning models, a critical challenge since the training of large-scale deep neural models can be computationally ex…

cs.SI2025★ 1 cited

The Chilling: Identifying Strategic Antisocial Behavior Online and Examining the Impact on Journalists

Yian Wang, Mukhilshankar Umashankar, Eshwar Chandrasekharan +1

On social platforms like Twitter, strategic targeted attacks are becoming increasingly common, especially against vulnerable groups such as female journalists. Two key challenges i…

cs.LG2025

On the Necessity of Output Distribution Reweighting for Effective Class Unlearning

Ali Ebrahimpour-Boroojeny, Yian Wang, Hari Sundaram

In this paper, we reveal a significant shortcoming in class unlearning evaluations: overlooking the underlying class geometry can cause information leakage about the forgotten clas…

cs.CL2025

Breaking Bad Tokens: Detoxification of LLMs Using Sparse Autoencoders

Agam Goyal, Vedant Rathi, William Yeh +3

Large language models (LLMs) are now ubiquitous in user-facing applications, yet they still generate undesirable toxic outputs, including profanity, vulgarity, and derogatory remar…

cs.LG2025

AMUN: Adversarial Machine UNlearning

Ali Ebrahimpour-Boroojeny, Hari Sundaram, Varun Chandrasekaran

Machine unlearning, where users can request the deletion of a forget dataset, is becoming increasingly important because of numerous privacy regulations. Initial works on ``exact''…

cs.LG2024

LOTOS: Layer-wise Orthogonalization for Training Robust Ensembles

Ali Ebrahimpour-Boroojeny, Hari Sundaram, Varun Chandrasekaran

Transferability of adversarial examples is a well-known property that endangers all classification models, even those that are only accessible through black-box queries. Prior work…

cs.LG2024

Spectrum Extraction and Clipping for Implicitly Linear Layers

Ali Ebrahimpour Boroojeny, Matus Telgarsky, Hari Sundaram

We show the effectiveness of automatic differentiation in efficiently and correctly computing and controlling the spectrum of implicitly linear operators, a rich family of layer ty…