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ColPali: Efficient Document Retrieval with Vision Language Models (arxiv.org)
2 points by fzliu on Jul 15, 2024 | hide | past | pdf | discuss on HN

In plain words: Instead of pulling text out of document pages first, this system turns each page image straight into a set of numbers a search can compare against a question. It beat today's text-extraction pipelines on a new page-retrieval test while being simpler and much faster.

Abstract

Documents are visually rich structures that convey information through text, but also figures, page layouts, tables, or even fonts. Since modern retrieval systems mainly rely on the textual information they extract from document pages to index documents -often through lengthy and brittle processes-, they struggle to exploit key visual cues efficiently. This limits their capabilities in many practical document retrieval applications such as Retrieval Augmented Generation (RAG). To benchmark current systems on visually rich document retrieval, we introduce the Visual Document Retrieval Benchmark ViDoRe, composed of various page-level retrieval tasks spanning multiple domains, languages, and practical settings. The inherent complexity and performance shortcomings of modern systems motivate a new concept; doing document retrieval by directly embedding the images of the document pages. We release ColPali, a Vision Language Model trained to produce high-quality multi-vector embeddings from images of document pages. Combined with a late interaction matching mechanism, ColPali largely outperforms modern document retrieval pipelines while being drastically simpler, faster and end-to-end trainable. We release models, data, code and benchmarks under open licenses at https://hf.co/vidore.

Manuel Faysse, Hugues Sibille, Tony Wu, Bilel Omrani, Gautier Viaud, Céline Hudelot, Pierre Colombo
arXiv:2407.01449 · cs.IR, cs.CL, cs.CV · submitted Jun 27, 2024 · updated Feb 28, 2025
abstract · pdf · html · Published as a conference paper at ICLR 2025

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