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Do Vision-Language Models Really Understand Visual Language?

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arxiv 2410.00193 v3 pith:ZOPNPSNW submitted 2024-09-30 cs.CL cs.CV

classification cs.CLcs.CV
keywords modelsdiagramdiagramslvlmslanguagereasoningrelationshipsunderstanding
verification ladder T0 review T1 audit T2 compute T3 formal
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Visual language is a system of communication that conveys information through symbols, shapes, and spatial arrangements. Diagrams are a typical example of a visual language depicting complex concepts and their relationships in the form of an image. The symbolic nature of diagrams presents significant challenges for building models capable of understanding them. Recent studies suggest that Large Vision-Language Models (LVLMs) can even tackle complex reasoning tasks involving diagrams. In this paper, we investigate this phenomenon by developing a comprehensive test suite to evaluate the diagram comprehension capability of LVLMs. Our test suite uses a variety of questions focused on concept entities and their relationships over a set of synthetic as well as real diagrams across domains to evaluate the recognition and reasoning abilities of models. Our evaluation of LVLMs shows that while they can accurately identify and reason about entities, their ability to understand relationships is notably limited. Further testing reveals that the decent performance on diagram understanding largely stems from leveraging their background knowledge as shortcuts to identify and reason about the relational information. Thus, we conclude that LVLMs have a limited capability for genuine diagram understanding, and their impressive performance in diagram reasoning is an illusion emanating from other confounding factors, such as the background knowledge in the models.

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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. ERUnderstand: Evaluating Vision-Language Models on Structured ER Diagrams

    cs.AI 2026-07 accept novelty 7.0 of 10

    VLMs recover common ERD elements at F1>0.74 but drop to 0.07–0.28 on N-ary relationships, multivalued attributes, and weak entities; reasoning models gain 15–25% yet stay prior- and complexity-sensitive.

  2. Prior Bias in Vision Language Models on UML Diagram Interpretation

    cs.CV 2026-07 conditional novelty 6.5 of 10

    Reversing only the UML relation arrow while keeping class names and layout fixed cuts open-source VLM relation accuracy by about 33%, revealing prior-over-vision bias.

  3. Ascending the Infinite Ladder: Benchmarking Spatial Deformation Reasoning in Vision-Language Models

    cs.CV 2025-07 conditional novelty 6.0 of 10

    Vision-language models can handle some 2D shape puzzles but nearly all fail at multi-step 3D spatial deformation reasoning.

  4. ViStruct: Simulating Expert-Like Reasoning Through Task Decomposition and Visual Attention Cues

    cs.HC 2025-06 conditional novelty 5.0 of 10

    ViStruct automatically breaks visualization questions into ordered subtasks tied to highlighted chart regions, imitating expert analysis strategies for chart reading.

  5. Examining Vision Language Models through Multi-dimensional Experiments with Vision and Text Features

    cs.CV 2025-09 conditional novelty 4.0 of 10

    Prompt specificity measurably affects counting accuracy and attention allocation in Qwen2.5-VL and Kimi-VL, and can partially overcome learned visual priors.

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    A GPT-4o-based smart tutor with problem-specific documents provided homework feedback in a circuit analysis course, and 90.9% of 66 student feedback responses were positive.

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