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20242026
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cs.CL2026

Locating and Controlling Implicit Personalization in Large Language Models

Yueru Yan, Siqi Wu, Thai Le

Large language models (LLMs) often shift their outputs in response to implicit demographic cues even when users never state a demographic identity. Previous work has documented thi…

cs.CL2026

PreUnlearn: Auditing Collateral Knowledge Damage Before Large Language Model Unlearning

Bo Su, Ankit Shah, Thai Le

Machine unlearning for large language models (LLMs) aims to remove specified knowledge while preserving the rest of the model's capabilities. However, the boundary between knowledg…

cs.CL2026

ShareChat: A Dataset of Chatbot Conversations in the Wild

Yueru Yan, Tuc Nguyen, Bo Su +2

By evaluating Large Language Models (LLMs) through uniform, text-only interfaces, current academic benchmarks obscure how the unique designs and affordances of distinct commercial…

cs.CL2025

Unraveling Interwoven Roles of Large Language Models in Authorship Privacy: Obfuscation, Mimicking, and Verification

Tuc Nguyen, Yifan Hu, Thai Le

Recent advancements in large language models (LLMs) have been fueled by large scale training corpora drawn from diverse sources such as websites, news articles, and books. These da…

cs.CL2024

NoMatterXAI: Generating "No Matter What" Alterfactual Examples for Explaining Black-Box Text Classification Models

Tuc Nguyen, James Michels, Hua Shen +1

In Explainable AI (XAI), counterfactual explanations (CEs) are a well-studied method to communicate feature relevance through contrastive reasoning of "what if" to explain AI model…

cs.CL2024

Adapters Mixup: Mixing Parameter-Efficient Adapters to Enhance the Adversarial Robustness of Fine-tuned Pre-trained Text Classifiers

Tuc Nguyen, Thai Le

Existing works show that augmenting the training data of pre-trained language models (PLMs) for classification tasks fine-tuned via parameter-efficient fine-tuning methods (PEFT) u…