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RandAR: Decoder-only Autoregressive Visual Generation in Random Orders

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arxiv 2412.01827 v2 pith:TRQ4K3GN submitted 2024-12-02 cs.CV cs.AI

classification cs.CVcs.AI
keywords randardecoder-onlygenerationtokenmodelsordersrandomvisual
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We introduce RandAR, a decoder-only visual autoregressive (AR) model capable of generating images in arbitrary token orders. Unlike previous decoder-only AR models that rely on a predefined generation order, RandAR removes this inductive bias, unlocking new capabilities in decoder-only generation. Our essential design enables random order by inserting a "position instruction token" before each image token to be predicted, representing the spatial location of the next image token. Trained on randomly permuted token sequences -- a more challenging task than fixed-order generation, RandAR achieves comparable performance to its conventional raster-order counterpart. More importantly, decoder-only transformers trained from random orders acquire new capabilities. For the efficiency bottleneck of AR models, RandAR adopts parallel decoding with KV-Cache at inference time, enjoying 2.5x acceleration without sacrificing generation quality. Additionally, RandAR supports inpainting, outpainting and resolution extrapolation in a zero-shot manner. We hope RandAR inspires new directions for decoder-only visual generation models and broadens their applications across diverse scenarios. Our project page is at https://rand-ar.github.io/.

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Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. D-AR: Diffusion via Autoregressive Models

    cs.CV 2025-05 conditional novelty 7.0 of 10

    D-AR recasts pixel-space diffusion as vanilla autoregressive next-token prediction using a diffusion-ordered discrete tokenizer, reaching 2.09 FID on ImageNet 256x256 with a 775M Llama backbone.

  2. Next-Dense-Stride Prediction for Multimodal Autoregressive Visual Modeling

    eess.IV 2026-07 conditional novelty 6.5 of 10

    Next-dense-stride prediction enables coarse-to-fine autoregressive image generation on a single-scale grid and unifies multi-contrast MRI translation, generation, and segmentation in one model.

  3. Progressive Checkerboards for Autoregressive Multiscale Image Generation

    cs.CV 2026-02 conditional novelty 6.0 of 10

    A balanced multiscale checkerboard sampling order for autoregressive image generation allows large scale-up factors without quality loss, because only the total number of serial steps matters.

  4. Scalable Training for Vector-Quantized Networks with 100% Codebook Utilization

    cs.CV 2025-09 conditional novelty 6.0 of 10

    A training-only ViT-based projector, VQBridge, combined with learning annealing, achieves full codebook utilization in vector-quantized networks at large codebook sizes, improving reconstruction and autoregressive ima...

  5. NeoBabel: A Multilingual Open Tower for Visual Generation

    cs.CL 2025-07 conditional novelty 6.0 of 10

    A 2B multilingual text-to-image model trained on 124M translated pairs matches or beats larger English-only baselines on English while scoring higher on the authors' multilingual benchmark extensions.

  6. Rethinking Discrete Tokens: Treating Them as Conditions for Continuous Autoregressive Image Synthesis

    cs.CV 2025-07 conditional novelty 6.0 of 10

    DisCon treats discrete image tokens as conditioning signals rather than targets, letting a continuous autoregressive model refine details and reach gFID 1.38 on ImageNet-256.

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