Challenge: Recent advances in Large Vision Language Models (LVLMs) show promise for pathological diagnosis, yet their application in clinical settings faces critical challenges of multimodal hallucination and biased responses.
Approach: They propose a framework that integrates medical expertise into preference alignment.
Outcome: The proposed framework outperforms existing pathological LVLMs while maintaining pathological accuracy.

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Aligning with Your Own Voice: Self-Corrected Preference Learning for Hallucination Mitigation in LVLMs (2026.findings-acl)

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Challenge: Existing preference learning-based approaches rely on proprietary models to construct preference datasets, causing a distributional mismatch between the proprietary and target models.
Approach: They propose a framework that aligns LVLMs using in-distribution data derived from the model's intrinsic knowledge.
Outcome: The proposed framework surpasses baselines in hallucination mitigation while requiring only 5.2k samples.
Beyond Surface Features: Advancing Medical Vision-Language Alignment via Dynamic Evidence-Guided Preference Optimization (2026.acl-long)

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Challenge: Existing preference-based methods for medical large vision-Language Models face limitations in medical settings . existing methods are limited by overfitting to superficial cues and pseudo convergence of the preference signal.
Approach: They propose a framework that enables evidence-aware and adaptive preference learning for Med-LVLMs.
Outcome: The proposed framework improves evidence-aware and adaptive preference learning for Med-LVLMs.
Benchmarking Direct Preference Optimization for Medical Large Vision–Language Models (2026.findings-eacl)

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Challenge: Large vision-language models (LVLMs) are gaining traction in clinical tasks such as diagnostic support, report generation, and medical question answering.
Approach: They present a systematic evaluation of nine DPO variants applied to two leading medical LVLMs.
Outcome: The proposed model improves alignment and reduces severe hallucinations, but yields inconsistent gains over supervised fine-tuning.
V-DPO: Mitigating Hallucination in Large Vision Language Models via Vision-Guided Direct Preference Optimization (2024.findings-emnlp)

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Challenge: Existing large vision-language models suffer from hallucination due to over-reliance on the Large Language Model (LLM) backbone.
Approach: They propose a method to improve visual context learning by using a large-scale preference learning algorithm to improve hallucination.
Outcome: The proposed method improves on human-annotated hallucination datasets.
Mitigating Hallucinations in Large Vision-Language Models via Entity-Centric Multimodal Preference Optimization (2025.emnlp-main)

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Challenge: Existing preference alignment methods focus on aligning model responses with human preferences while neglecting image-text modality alignment.
Approach: They propose Entity-centric Multimodal Preference Optimization to improve modality alignment . they use open-source instruction datasets to automatically construct high-quality preference data .
Outcome: The proposed approach reduces hallucination rates by 80.4% on Object HalBench and 52.6% on MM HalBech.
Improving Alignment in LVLMs with Debiased Self-Judgment (2025.findings-emnlp)

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Challenge: Existing methods for aligning LVLMs rely on external datasets, human annotations or complex post-processing.
Approach: They propose a method that generates a debiased self-judgment score for LVLMs . this self-evaluation metric is created internally by the model without external resources .
Outcome: The proposed approach outperforms existing methods in reducing hallucinations and safety concerns.
OmniAlign-V: Towards Enhanced Alignment of MLLMs with Human Preference (2025.acl-long)

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Challenge: Existing open-source multi-modal large language models (MLLMs) focus on enhancing foundational capabilities, leaving a significant gap in human preference alignment.
Approach: They propose a dataset of 200K high-quality training samples featuring diverse images, complex questions, and varied response formats to improve MLLMs’ alignment with human preferences.
Outcome: The proposed dataset of 200K high-quality training samples improves human preference alignment while maintaining or enhancing performance on standard VQA benchmarks.
Self-Guided Alignment: Adaptive Preference Sensing for Multi-Objective Generation (2026.acl-long)

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Challenge: Existing approaches to align LLMs with diverse human values rely on ground-truth scores . existing approaches implicitly approximate an average-user preference, thereby failing to capture heterogeneity of human values or accommodate conflicting user needs.
Approach: They propose a framework that transforms passive reward dependency into an intrinsic adaptive sensing capability.
Outcome: The proposed framework outperforms state-of-the-art models in multiple model scales and improves preference alignment.
Mitigating Hallucinations in Large Vision-Language Models by Self-Injecting Hallucinations (2025.findings-emnlp)

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Challenge: Existing methods for hallucination mitigation are based on external dependency and require external annotations or auxiliary models for preference data collection.
Approach: a new method is proposed to help model-generated hallucinations without external dependencies.
Outcome: a new method that self-injects hallucinations into a generated response improves halluuutations mitigation.
Med-MoE: Mixture of Domain-Specific Experts for Lightweight Medical Vision-Language Models (2024.findings-emnlp)

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Challenge: Recent advances in multimodal large language models have seen remarkable progress for medical decision-making, however, they are designated for specific classification or generative tasks and require model training or finetuning on large-scale datasets with sizeable parameters and tremendous computing.
Approach: They propose a framework that tackles discriminative and generative multimodal medical tasks using multimodal alignment, instruction tuning and routing.
Outcome: The proposed model can achieve superior performance to or on par with state-of-the-art baselines while only requiring 30%-50% of activated model parameters.

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