Vision & Multimodal Sep 2025 · #66 most cited · 86 citations

MinerU2.5: A Decoupled Vision-Language Model for Efficient High-Resolution Document Parsing

Junbo Niu et al.

arXiv:2509.22186

In short

MinerU2.5 is a 1.2B document-parsing model that first reads the page layout at low resolution, then recognises each region from full-resolution crops. That preserves dense text, formulas and tables at a fraction of the compute.

Why it matters

Accurate, cheap PDF parsing is the unglamorous foundation of document RAG.

Read first

The 3 Field Guide ideas this paper leans on.

Starting from scratch? The full route 23 ideas · basics first
  1. Machine Learning ✓ understood

    Building systems that learn patterns from data instead of following hand-written rules, getting better at a task as they see more examples.

  2. Neural Network ✓ understood

    A computational model inspired by biological neural networks, consisting of interconnected nodes (neurons) organized in layers that process information through weighted connections.

  3. Deep Learning ✓ understood

    A subset of machine learning that uses neural networks with multiple layers (deep neural networks) to learn hierarchical representations of data.

  4. Computer Vision ✓ understood

    The field of AI that gets computers to extract meaning from images and video: what is in them, where it is, and how it moves.

  5. Optical Character Recognition · read first ✓ understood

    Converting images of text (scanned documents, photos) into machine-readable text using computer vision.

  6. Natural Language Processing ✓ understood

    The field of AI that lets computers read, interpret, translate and generate human language, from spam filters and search to chatbots.

  7. Token ✓ understood

    The basic unit of text that a language model processes, typically representing a word, subword, or character. Tokens are the fundamental building blocks for LLM input and output.

  8. Tokenization ✓ understood

    Splitting text into tokens, usually subword pieces, and mapping each to an integer ID so a language model can process it.

  9. Language Modeling ✓ understood

    Learning probability distributions over sequences of words to predict what comes next.

  10. Dataset ✓ understood

    A collection of data examples used for training, validating, or testing machine learning models.

  11. Training ✓ understood

    The process of fitting a model to data by repeatedly measuring how wrong its outputs are and adjusting its parameters to reduce that error.

  12. Unsupervised Learning ✓ understood

    Learning from unlabeled data to discover hidden patterns, structures, or relationships without explicit target outputs.

  13. Self-Supervised Learning ✓ understood

    Learning representations from unlabeled data by creating supervised tasks from the data itself (masked prediction, contrastive learning).

  14. Pre-training ✓ understood

    Training a model on a large dataset (often self-supervised) before fine-tuning on specific tasks, enabling transfer learning.

  15. Feature ✓ understood

    A single measurable property of an example, such as a house's floor area or how many links an email contains, used as an input to a model.

  16. Representation Learning ✓ understood

    Learning useful features or representations of data automatically, rather than hand-crafting them.

  17. Embedding ✓ understood

    A list of numbers (a vector) that represents a word, sentence, image or other item, learned so that similar items end up close together.

  18. Attention Mechanism ✓ understood

    A technique that lets a neural network weigh every part of its input when producing each output, focusing on the parts most relevant at that step.

  19. Transformer ✓ understood

    A neural network architecture, introduced in 2017, built from stacked self-attention and feed-forward layers; the basis of nearly every modern large language model.

  20. Large Language Model ✓ understood

    A neural network, almost always a transformer, trained on vast amounts of text to predict the next token, which lets it write, answer, summarize and follow instructions.

  21. Multimodal Model · read first ✓ understood

    Models processing multiple data types (text, images, audio) jointly, like GPT-4V, Gemini, or CLIP.

  22. Inference ✓ understood

    Running a trained model on new inputs to get predictions, with its weights frozen: the stage of a model's life that users actually interact with.

  23. Inference Latency · read first ✓ understood

    The time delay between submitting input and receiving output from a deployed model, critical for real-time applications.

In the frontier

Rank
#66 of 100
Citations
86
as of Aug 9, 2026
Published
Sep 2025

Topics: Document AI and OCR , Vision-language models , Efficiency and serving

Selection: 1kpapers.com by Together AI, most-cited as of Aug 9, 2026

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