SPAE: Semantic Pyramid AutoEncoder for Multimodal Generation with Frozen LLMs
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Abstract (arXiv)
In this work, we introduce Semantic Pyramid AutoEncoder (SPAE) for enabling frozen LLMs to perform both understanding and generation tasks involving non-linguistic modalities such as images or videos. SPAE converts between raw pixels and interpretable lexical tokens (or words) extracted from the LLM's vocabulary. The resulting tokens capture both the semantic meaning and the fine-grained details needed for visual reconstruction, effectively translating the visual content into a language comprehensible to the LLM, and empowering it to perform a wide array of multimodal tasks. Our approach is validated through in-context learning experiments with frozen PaLM 2 and GPT 3.5 on a diverse set of image understanding and generation tasks. Our method marks the first successful attempt to enable a frozen LLM to generate image content while surpassing state-of-the-art performance in image understanding tasks, under the same setting, by over 25%.
Key facts. Cited by 55 papers in the map (data through 14 Oct 2026). Builds on 45 of its 52 references that are in the map. First posted on arXiv 30 Jun 2023.
Builds on
45 of 52 references.
References · 45
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Citing papers per year: 2023: 6; 2024: 30; 2025: 16; 2026: 3.
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