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Jian Lan

4 accepted papers

2026

Human Uncertainty-Aware Data Selection and Automatic Labeling in Visual Question Answering

ICLR 2026poster

Large vision-language models (VLMs) achieve strong performance in Visual Question Answering but still rely heavily on supervised fine-tuning (SFT) with massive labeled datasets, which is costly due to human annotations. Crucially, real-world datasets often exhibit *human uncertainty* (**HU**) — var…

Cited by 0SourceScholar
2026

Incorporating Expert Priors into Bayesian Optimization via Dynamic Mean Decay

ICLR 2026poster

Bayesian optimization (BO) is a powerful approach for black-box optimization, and in many real-world problems, domain experts possess valuable prior knowledge about promising regions of the search space. However, existing prior-informed BO methods are often overly complex, tied to specific acquisiti…

Cited by 0SourceScholar
2025

Mind the Uncertainty in Human Disagreement: Evaluating Discrepancies Between Model Predictions and Human Responses in VQA

AAAI 2025technical

Large vision-language models struggle to accurately predict responses provided by multiple human annotators, particularly when those responses exhibit high uncertainty. In this study, we focus on a Visual Question Answering (VQA) task and comprehensively evaluate how well the output of the state-of-…

2023

Unifying Discrete and Continuous Representations for Unsupervised Paraphrase Generation

EMNLP 2023long main

Unsupervised paraphrase generation is a challenging task that benefits a variety of downstream NLP applications. Current unsupervised methods for paraphrase generation typically employ round-trip translation or denoising, which require translation corpus and result in paraphrases overly similar to t…

Cited by 0SourceScholar