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This position paper is squarely about AI: it surveys omnimodal embedding models, the representation layer behind search and recommendation. Its main contribution is a conceptual framework (coverage, comparability, compositionality) for organizing a fragmented literature across text, image, audio, and video, rather than new benchmark results. Readers should treat the roadmap as a useful taxonomy and a prediction about where multimodal representation learning is heading, while noting that joint embedding for true compositionality remains an aspiration that the paper advocates rather than demonstrates.
Source coveringarXiv

From Fragmentation to Fusion: A Survey and Roadmap for Omnimodal Embeddings

arXiv2 min read

arXiv:2611.00172v1 Announce Type: cross Abstract: Embedding models underpin virtually every modern AI system, from search engines to recommendation systems. Despite shared mathematical foundations, research on embedding models remains fragmented by modality: the communities develop largely in isolation, seldom exchanging insights. We argue that this fragmentation obscures a deeper convergence. Driven by contrastive learning, Transformer architectures, and a granularity shift, embedding research across modalities is converging toward a common set of principles, even as modality-specific challenges remain underexplored. To reason across this convergence without conflating it, we propose a framework of three progressively harder capabilities: coverage, comparability, and compositionality. Three paths toward unification satisfy these in turn: transformation broadens coverage, alignment enables comparability, and joint embedding, the terminus we advocate, aims at compositionality. This position paper traces the resulting evolution, providing the first unified, cross-cutting treatment of omnimodal embedding research.

Abstract:Embedding models underpin virtually every modern AI system, from search engines to recommendation systems. Despite shared mathematical foundations, research on embedding models remains fragmented by modality: the communities develop largely in isolation, seldom exchanging insights. We argue that this fragmentation obscures a deeper convergence. Driven by contrastive learning, Transformer architectures, and a granularity shift, embedding research across modalities is converging toward a common set of principles, even as modality-specific challenges remain underexplored. To reason across this convergence without conflating it, we propose a framework of three progressively harder capabilities: coverage, comparability, and compositionality. Three paths toward unification satisfy these in turn: transformation broadens coverage, alignment enables comparability, and joint embedding, the terminus we advocate, aims at compositionality. This position paper traces the resulting evolution, providing the first unified, cross-cutting treatment of omnimodal embedding research.

Computation and Language (cs.CL); Artificial Intelligence (cs.AI)

arXiv:2611.00172 [cs.CL]

(or arXiv:2611.00172v1 [cs.CL] for this version)

https://doi.org/10.48550/arXiv.2611.00172 Focus to learn more arXiv-issued DOI via DataCite (pending registration)

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Full text under the publisher's open licence · 232 words

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