The paper introduces an empirical attribution framework to pinpoint failures in multi‑page visually rich document understanding systems. By applying controlled interventions in a unified document question‑answering pipeline, the authors analyze how evidence representation, selection, and usage affect performance. Experiments on MMLongBench‑Doc reveal that complementary modalities can mitigate conversion errors, that adding non‑gold pages can both correct and break answers, and that abstention strategies trade unsupported answers for false refusals, with varying effects across different backbones.
arXiv:2608. 07943v1 Announce Type: new Abstract: Multi-page visually-rich document understanding (MP-VRDU) requires managing evidence that is sparse, spread across pages, and often exceeds a model's context window.
DocAttriBench (DAB) is a large‑scale benchmark for fine‑grained, element‑level source attribution in Document Visual Question Answering (VQA). It introduces MAPPET, a Mask‑based Perplexity‑Derived Attribution method that uses document layout and language modeling to identify the most informative layout element for each answer. The benchmark contains 237k documents and 296k question‑answer pairs with element‑level grounding, and it evaluates multimodal LLMs on answer accuracy, attribution accuracy, and overall answer quality, revealing that even strong models often fail to localize supporting elements.
VELD-QA is a large-scale benchmark for visual evidence grounding and question answering in long documents, comprising 15,000 human-authored question-answer pairs across 5,859 PDFs with 372,445 pages. The dataset includes detailed annotations of supporting pages, visual evidence elements, and descriptions of cited visual content, enabling separate evaluation of retrieval, localization, and interpretation. Experiments on nine vision-language models and various retrieval-augmented systems reveal significant gaps in evidence localization and visual interpretation, with oracle accuracy peaking at 81.7% and enrichment of visual-element annotations narrowing performance gaps by 17–24%.
DocAttriBench (DAB) is a large-scale benchmark that provides fine-grained, element-level source attribution for Document Visual Question Answering (VQA). It introduces MAPPET, a Mask-based Perplexity-Derived Attribution method that uses document layout and language modeling to identify the most informative layout element for each answer. The benchmark contains 237k documents and 296k question-answer pairs with grounding annotations, and it evaluates multimodal LLMs on answer accuracy, attribution accuracy, and overall answer quality.
arXiv:2609.13158v1 Announce Type: new Abstract: Large Vision--Language Models (LVLMs) are increasingly expected to perform visual question answering (VQA) over planar media. However, existing planar...
arXiv:2604. 13731v2 Announce Type: replace Abstract: Multi-page Document Visual Question Answering requires reasoning over semantics, layouts, and visual elements in long, visually dense documents.
arXiv:2609.00232v1 Announce Type: new Abstract: Multimodal Large Language Models (MLLMs) have achieved strong performance on OCR-centric document understanding and text-rich visual reasoning benchmar...
The paper surveys long-document visual question answering (VQA) from a task-centric perspective, breaking it down into document parsing, evidence organization and retrieval, generator organization and learning, and evaluation. It introduces a detailed taxonomy for each component, tracks how research priorities have shifted over time—from multimodal content understanding to evidence acquisition and management—and highlights the importance of explicit retrieval alongside direct reading. The authors propose future research directions focused on evidence sufficiency, verifiable and correctable understanding, budget-aware coordination, and continual document understanding.
arXiv:2606. 16092v1 Announce Type: cross Abstract: Real-world documents combine text with tables, charts, photographs, and diagrams arranged in diverse layouts, yet existing research on multimodal large language models (MLLMs) for document QA predominantly produces text-only responses, underutilizing these visual elements.
arXiv:2607. 10400v1 Announce Type: cross Abstract: Vision language models (VLMs) have achieved strong performance on visual document understanding benchmarks such as DocVQA, ChartQA, and MMLongBench-Doc.
arXiv:2607. 01420v1 Announce Type: cross Abstract: As grounded QA systems are increasingly deployed in AI assistants, accurately attributing generated answers to evidence is critical for user trust and model safety.
arXiv:2609.37656v1 Announce Type: new Abstract: Large vision-language models (LVLMs) exhibit strong reasoning capabilities, yet the visual and textual evidence supporting the generated responses rema...