Challenge: Recent advances in Multi-modal Language Models have shown remarkable performance in multimodal tasks . however, these models often exhibit inherent biases that compromise their reliability and fairness.
Approach: They propose a framework that integrates Distill, Dynamic Drop, and Merge to address these challenges.
Outcome: The proposed framework outperforms existing methods in balancing debiasing and improving performance on the MMSD2.0 sarcasm detection dataset.

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Beyond Spurious Signals: Debiasing Multimodal Large Language Models via Counterfactual Inference and Adaptive Expert Routing (2025.findings-emnlp)

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Challenge: Multimodal Large Language Models (MLLMs) often rely on spurious correlations, undermining their robustness and generalization.
Approach: They propose a causal mediation-based debiasing framework to address correlation bias in MLLMs . they distinguish core semantics from spurious textual and visual contexts using counterfactual examples .
Outcome: The proposed framework surpasses existing state-of-the-art models on sarcasm detection and sentiment analysis tasks.
Multi-Modality Expansion and Retention for LLMs through Parameter Merging and Decoupling (2025.acl-long)

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Challenge: Large Language Models (LLMs) are a cornerstone in artificial intelligence due to their exceptional performance.
Approach: They propose a training-free approach that integrates existing MLLMs for effective multimodal expansion while retaining their original performance.
Outcome: The proposed approach can expand LLMs' multimodal capabilities while retaining original performance.
Less is More: A Simple yet Effective Token Reduction Method for Efficient Multi-modal LLMs (2025.coling-main)

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Challenge: Recent advances in Multimodal Large Language Models have led to a significant surge in the resource consumption of these models.
Approach: They propose a method to reduce image tokens using visual query data by using CLIP metrics to reduce computational overhead and maintain consistent performance.
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Learning Flexible Large Multimodal Models with Arbitrary Modality Combinations (2026.findings-acl)

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Challenge: Multimodal Large Language Models (MLLMs) have potential for cross-modal understanding . but extending MLLM to handle diverse modalities introduces two challenges .
Approach: They propose a dual-stage compression mechanism to reduce the number of modality tokens per modality and condense it into a single, compact token sequence.
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Multi-modal Preference Alignment Remedies Degradation of Visual Instruction Tuning on Language Models (2024.acl-long)

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Challenge: Multi-modal large language models (MLLMs) are expected to support multi-turn queries of interchanging image and text modalities in production.
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Model Composition for Multimodal Large Language Models (2024.acl-long)

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Challenge: Existing methods for creating versatile MLLMs rely on joint training with paired instruction data, which is resource-intensive and challenging to extend to new modalities.
Approach: They propose a new paradigm for multimodal large language models by reusing modality encoders and merging LLM parameters.
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BiasFilter: An Inference-Time Debiasing Framework for Large Language Models (2025.findings-emnlp)

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Challenge: Existing methods for debiasing large language models incur high human and computational costs and are limited in their effectiveness.
Approach: They propose a model-agnostic, inference-time debiasing framework that enforces fairness by filtering generation outputs in real time.
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Text Takes Over: A Study of Modality Bias in Multimodal Intent Detection (2025.emnlp-main)

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Challenge: a new study examines the effectiveness of large language models and non-LLMs in multimodal intent detection . large-scale multimodal data integrations include text, audio, and visual inputs .
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Decompose, Prioritize, and Eliminate: Dynamically Integrating Diverse Representations for Multimodal Named Entity Recognition (2024.lrec-main)

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Challenge: Existing research on multi-modal Named Entity Recognition (MNER) does not integrate all multi-modal representations to provide rich contextual information to improve NER.
Approach: They propose an iterative reasoning framework that integrates all the diverse multi-modal representations following the strategy of "decompose, prioritize, and eliminate" . they propose to use hierarchically connected fusion layers to prioritize transitions from "easy-to-hard" and "coarse-to fine"
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MTA: Multi-Granular Trajectory Alignment for Large Language Model Distillation (2026.acl-long)

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Challenge: Existing methods for reducing the computational cost of large language models (LLMs) focus on minimizing the divergence between the output probability distributions of the teacher and the student, which limits knowledge transfer.
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