tsunghanwu/reverse_qwen25_vl

REVERSE-Qwen2.5-VL-3B

Model Summary

REVERSE-Qwen2.5-VL-3B is a novel open-source vision-language model (VLM) that performs both next-token predictioin and self-verification / self-correction during the generation process. Built on top of Qwen2.5-VL-3B-Instruct, it is fine-tuned using the 100k-subset of REVERSE Visual Instruct 1.3M dataset and equipped with a retrospective resampling mechanism that allows it to detect and correct hallucinations during generation. The model is trained in early May, 2025.

Performance

REVERSE achieves state-of-the-art hallucination reduction across diverse captioning and open-ended visual question answering benchmarks. To ensure the apple-to-apple comparison, we fine-tune the released Qwen2.5-VL-3B model using both the LLaVA-FT setup and our REVERSE recipe, applying both on the same 100k subset. This allows us to directly compare the impact of our method against the LLaVA-FT baseline under consistent conditions as the Qwen2.5-VL's instruction tuning data is not publicly available.

Benchmark	Metric	Qwen2.5-VL-FT	REVERSE (τ=0.01)
CHAIR-MSCOCO	CHAIRi (↓)	12.2	10.5
	CHAIRs (↓)	45.8	39.4
AMBER-G	CHAIR (↓)	7.7	7.5
	Coverage (↑)	51.7	51.5
MMHal-Bench	Score (↑)	2.89	3.15
	Hallucination Rate (↓)	0.43	0.29
HaloQuest	Avg. Accuracy (↑)	33.5	45.1
	False Premise Acc. (↑)	25.4	42.9
	Visual Challenging Acc. (↑)	51.6	41.8
	Insufficient Context Acc. (↑)	26.4	55.5

It also performs competitively on discriminative tasks compared with the base VLM.

Benchmark	Metric	Qwen2.5-VL-FT	REVERSE (τ=0.5)
AMBER-D	F1 Score (↑)	85.0	85.7
POPE	F1 Score (↑)	87.1	86.5
MME-Hall	Score (↑)	550.4	589.5

Usage

Please refer to the installation guide on GitHub to get started:
👉 Installation Guide

Additional Resources

• 📄 Project Page: https://reverse-vlm.github.io/
• 🧾 Dataset: REVERSE Visual Instruct 1.3M
• 🔧 Ask Questions: GitHub Issues

Intended Use

Primary Use Cases:

• Reducing hallucination in image captioning and VQA tasks
• Benchmarking hallucination-aware generation
• Research on grounded vision-language generation and self-correction

Target Users:
Researchers, developers, and students working in computer vision, NLP, and multimodal AI.