Challenge: Multimodal representation alignment is crucial for large language models and robotics.
Approach: They propose a framework that optimizes multimodal representation spaces through a modality-shared-specific codebook design.
Outcome: The proposed framework achieves state-of-the-art performance in multimodal classification and retrieval tasks.

Similar Papers

Enhancing Multimodal Unified Representations for Cross Modal Generalization (2025.findings-acl)

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Challenge: Existing studies on discrete unified representations overlook important distinctions between different dimensions of features.
Approach: They propose to use a codebook to optimize unified representations from pretraining and fine- and coarse-grained disentangling to optimize the representations.
Outcome: The proposed methods improve the interpretability of multimodal unified representations . they use training-free optimization of codebook and fine and coarse cross-modal disentangling .
MSCode: Advancing Human Motion-Language Understanding via Modality-Shared Codebook (2026.findings-acl)

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Challenge: Existing methods for motion understanding lack precise alignment between motion and modalities . existing methods lack precise semantics and a mismatch between motion, text .
Approach: They propose a modality-shared codebook that enables unified representation learning and precise alignment between motion and linguistic modalities.
Outcome: The proposed model surpasses current state-of-the-art methods in many areas . it enables unified representation learning and precise alignment of motion and modalities .
mmE5: Improving Multimodal Multilingual Embeddings via High-quality Synthetic Data (2025.findings-acl)

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Challenge: Multimodal embedding models encode multimedia inputs into latent vector representations.
Approach: They propose to synthesize multimodal multilingual data using a multimodal large language model . they identify three criteria for high-quality synthetic multimodal data .
Outcome: The proposed model outperforms existing models on the MMEB Benchmark and the XTD benchmark.
Multimodal Unlearning Across Vision, Language, Video, and Audio: Survey of Methods, Datasets, and Benchmarks (2026.findings-acl)

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Challenge: Survey aims to identify challenges of multimodal unlearning for vision, language, audio and video . retraining after deletion requests or policy updates is often impractical, survey finds .
Approach: They propose to enable selective removal across modalities while retaining overall utility.
Outcome: This study compares models with existing models to identify weaknesses and improves performance.
Cross-Modal Discrete Representation Learning (2022.acl-long)

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Challenge: a new framework for learning representations from multimodal data is proposed . the proposed framework uses discretized embedding vectors to capture finer levels of granularity .
Approach: They propose a self-supervised representation learning framework that captures finer levels of granularity across different modalities.
Outcome: The proposed representation can capture finer levels of granularity across different modalities . it can be used on cross-modal retrieval tasks without direct supervision .
Deep Generative Model for Joint Alignment and Word Representation (N18-1)

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Challenge: EmbedAlign model embeds words in their complete observed context and learns by marginalisation of latent lexical alignments.
Approach: They exploit translation as a distributional context and embed words as posterior probability densities, rather than point estimates, which allows them to compare words in context using a measure of overlap between distributions.
Outcome: The proposed model performs on a range of lexical semantics tasks and achieves competitive results on benchmarks including natural language inference, paraphrasing, and text similarity.
Seeing Through Words, Speaking Through Pixels: Deep Representational Alignment Between Vision and Language Models (2025.emnlp-main)

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Challenge: Recent studies show that deep vision-only and language-only models project inputs into a partially aligned representational space.
Approach: They investigate whether a model's representational code is semantically shared . they find that alignment peaks in mid-to-late layers of both model types .
Outcome: a forced-choice "Pick-a-Pic" task shows human preferences for image-caption matches are mirrored in embedding spaces across vision-language model pairs.
DALR: Dual-level Alignment Learning for Multimodal Sentence Representation Learning (2025.findings-acl)

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Challenge: Existing multimodal sentence representation learning methods focus on aligning images and text at a coarse level, resulting in cross-modal misalignment bias and intra-modal semantic divergence.
Approach: They propose a dual-level alignment learning framework for multimodal sentence representation learning that promotes cross-modal and intra-modal alignment.
Outcome: The proposed framework outperforms state-of-the-art methods on semantic textual similarity and transfer tasks on semantic similarity, ranking distillation and global intra-modal alignment learning.
JW-SVD: Bridging the Cross-Modal Mismatch in Post-Training MLLM Compression (2026.acl-long)

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Challenge: Existing methods for compression of Multimodal Large Language Models lack multimodal adaptation to preserve cross-modal synergy.
Approach: They propose a framework that aligns vision and language manifolds via a Joint Covariance basis and propose Global Spectrum-Aware Truncation to dynamically transfer parameter budget to the sensitive Backbone.
Outcome: Experiments on Qwen2.5-VL and Llama-3-Next confirm that JW-SVD retains both text and image capabilities.
UnifiedVisual: A Framework for Constructing Unified Vision-Language Datasets (2025.emnlp-main)

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Challenge: Existing datasets address understanding and generation in isolation, limiting the performance of unified vision large language models.
Approach: They propose a dataset that facilitates mutual enhancement between multimodal understanding and generation.
Outcome: The proposed framework integrates diverse visual and textual inputs and outputs, enabling comprehensive cross-modal reasoning and precise text-to-image alignment.

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