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Zhiwen Tang

4 accepted papers

2026

GDFA: Geometry-Driven Federated Unlearning with Directional Task Vector Alignment

CVPR 2026

Federated Learning (FL) is a decentralized framework that not only enables collaborative training with different clients but also ensures their local data privacy. However, when deletion requests arise under privacy regulations, efficiently removing specific client data contributions from target cli

Cited by 0SourceScholar
2024

DuetSim: Building User Simulator with Dual Large Language Models for Task-Oriented Dialogues

COLING 2024main

User Simulators play a pivotal role in training and evaluating task-oriented dialogue systems. Traditional user simulators typically rely on human-engineered agendas, resulting in generated responses that often lack diversity and spontaneity. Although large language models (LLMs) exhibit a remarkabl…

2024

Zero-Shot Cross-Domain Dialogue State Tracking via Dual Low-Rank Adaptation

ACL 2024long

Zero-shot dialogue state tracking (DST) seeks to enable dialogue systems to transition to unfamiliar domains without manual annotation or extensive retraining. Prior research has approached this objective by embedding prompts into language models (LMs). Common methodologies include integrating promp…