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Chao Shang

9 accepted papers

2026

Capturing Gaze Shifts for Guidance: Cross-Modal Fusion Enhancement for VLM Hallucination Mitigation

ICML 2026poster

Vision language models (VLMs) often generate hallucination, i.e., content that cannot be substantiated by either textual or visual inputs. Prior work primarily attributes this to over-reliance on linguistic prior knowledge rather than visual inputs. Some methods attempt to mitigate hallucination by …

Cited by 0SourceScholar
2025

Aligning to Constraints for Data-Efficient Language Model Customization

NAACL 2025findings

General-purpose language models (LMs) are aligned to diverse user intents, but fall short when it comes to specific applications. While finetuning is the default method for customized alignment, human annotations are often unavailable in various customization scenarios. Based on the observation that…

Cited by 0SourcePDFScholar
2025

Unraveling and Mitigating Safety Alignment Degradation of Vision-Language Models

ACL 2025finding

The safety alignment ability of Vision-Language Models (VLMs) is prone to be degraded by the integration of the vision module compared to its LLM backbone. We investigate this phenomenon, dubbed as “safety alignment degradation” in this paper, and show that the challenge arises from the representati…

Cited by 0SourcePDFScholar
2024

Prompt-Driven Referring Image Segmentation with Instance Contrasting

CVPR 2024poster

Referring image segmentation (RIS) aims to segment the target referent described by natural language. Recently large-scale pre-trained models e.g. CLIP and SAM have been successfully applied in many downstream tasks but they are not well adapted to RIS task due to inter-task differences. In this pap…

Cited by 12SourcePDFScholar
2023

Diable: Efficient Dialogue State Tracking as Operations on Tables

ACL 2023findings

Sequence-to-sequence state-of-the-art systems for dialogue state tracking (DST) use the full dialogue history as input, represent the current state as a list with all the slots, and generate the entire state from scratch at each dialogue turn. This approach is inefficient, especially when the number…

2023

Incrementer: Transformer for Class-Incremental Semantic Segmentation With Knowledge Distillation Focusing on Old Class

CVPR 2023highlight

Class-incremental semantic segmentation aims to incrementally learn new classes while maintaining the capability to segment old ones, and suffers catastrophic forgetting since the old-class labels are unavailable. Most existing methods are based on convolutional networks and prevent forgetting throu…

Cited by 34SourcePDFScholar
2022

Improving Time Sensitivity for Question Answering over Temporal Knowledge Graphs

ACL 2022long

Question answering over temporal knowledge graphs (KGs) efficiently uses facts contained in a temporal KG, which records entity relations and when they occur in time, to answer natural language questions (e.g., “Who was the president of the US before Obama?”). These questions often involve three tim…

Cited by 50SourcePDFScholar
2021

TAG: Gradient Attack on Transformer-based Language Models

EMNLP 2021finding

Although distributed learning has increasingly gained attention in terms of effectively utilizing local devices for data privacy enhancement, recent studies show that publicly shared gradients in the training process can reveal the private training data (gradient leakage) to a third-party. We have,…

Cited by 90SourcePDFScholar