← Search

Cao Liu

10 accepted papers

2026

Breaking the Illusion: When Positive Meets Negative in Multimodal Decoding

CVPR 2026

Vision-Language Models (VLMs) are frequently undermined by object hallucination--generating content that contradicts visual reality--due to an over-reliance on linguistic priors. We introduce Positive-and-Negative Decoding (PND), a training-free inference framework that intervenes directly in the de

Cited by 0SourcecodeScholar
2026

TRIP-Bench: A Benchmark for Long-Horizon Interactive Agents in Real-World Scenarios

ICML 2026poster

As LLM-based agents are deployed in increasingly complex real-world settings, existing benchmarks underrepresent key challenges such as enforcing global constraints, coordinating multi-tool reasoning, and adapting to evolving user behavior over long, multi-turn interactions. To bridge this gap, we i…

Cited by 0SourceScholar
2026

Towards Self-Robust LLMs: Intrinsic Prompt Noise Resistance via CoIPO

ICLR 2026poster

Large language models (LLMs) have demonstrated remarkable and steadily improving performance across a wide range of tasks. However, LLM performance may be highly sensitive to prompt variations especially in scenarios with limited openness or strict output formatting requirements, indicating insuffic…

Cited by 0SourcecodeScholar
2024

Learning or Self-aligning? Rethinking Instruction Fine-tuning

ACL 2024long

Instruction Fine-tuning (IFT) is a crucial phase in building large language models (LLMs). Previous works mainly focus on the IFT’s role in the transfer of behavioral norms and the learning of additional world knowledge. However, the understanding of the underlying mechanisms of IFT remains signific…

2023

Ambiguous Learning from Retrieval: Towards Zero-shot Semantic Parsing

ACL 2023long

Current neural semantic parsers take a supervised approach requiring a considerable amount of training data which is expensive and difficult to obtain. Thus, minimizing the supervision effort is one of the key challenges in semantic parsing. In this paper, we propose the Retrieval as Ambiguous Super…

Cited by 5SourcePDFScholar
2023

Generative Calibration for In-context Learning

EMNLP 2023long findings

As one of the most exciting features of large language models (LLMs), in-context learning is a mixed blessing. While it allows users to fast-prototype a task solver with only a few training examples, the performance is generally sensitive to various configurations of the prompt such as the choice or…

Cited by 0SourcecodeScholar
2023

Interpreting Sentiment Composition with Latent Semantic Tree

ACL 2023findings

As the key to sentiment analysis, sentiment composition considers the classification of a constituent via classifications of its contained sub-constituents and rules operated on them. Such compositionality has been widely studied previously in the form of hierarchical trees including untagged and se…

2023

Representative Demonstration Selection for In-Context Learning with Two-Stage Determinantal Point Process

EMNLP 2023long main

Although In-Context Learning has proven effective across a broad array of tasks, its efficiency is noticeably influenced by the selection of demonstrations. Existing methods tend to select different demonstrations for each test instance, which is time-consuming and poses limitations in practical scena…

Cited by 0SourceScholar
2022

Confidence Calibration for Intent Detection via Hyperspherical Space and Rebalanced Accuracy-Uncertainty Loss

AAAI 2022technical

Data-driven methods have achieved notable performance on intent detection, which is a task to comprehend user queries. Nonetheless, they are controversial for over-confident predictions. In some scenarios, users do not only care about the accuracy but also the confidence of model. Unfortunately, mai…

Cited by 4SourcePDFScholar
2021

Domain-Lifelong Learning for Dialogue State Tracking via Knowledge Preservation Networks

EMNLP 2021main

Dialogue state tracking (DST), which estimates user goals given a dialogue context, is an essential component of task-oriented dialogue systems. Conventional DST models are usually trained offline, which requires a fixed dataset prepared in advance. This paradigm is often impractical in real-world a…