🤖 AI Summary
This work addresses a critical limitation in current vision-language models: their inability to actively uncover implicit visual evidence for reasoning, as they predominantly rely on passive semantic retrieval. The study systematically identifies and formalizes the problem of “subjectivity deficiency” in visual reasoning and introduces the Visual Implicit Reasoning Diagnosis benchmark (V-IRD). V-IRD establishes the first evaluation framework specifically designed to assess a model’s capacity for active, implicit visual reasoning through autonomous visual exploration tasks and attention behavior analysis. Experimental results demonstrate that state-of-the-art models perform significantly worse on V-IRD compared to their performance on semantic retrieval tasks, thereby confirming their deficiency in self-driven discovery and utilization of visual evidence for reasoning.
📝 Abstract
This paper argues that a systemic lack of Agency constrains the implicit reasoning capabilities of current Vision-Language Models (VLMs). Implicit reasoning refers to the ability to autonomously discover and utilize hidden visual evidence to bridge information gaps, rather than merely relying on explicitly specified targets. This capacity underlies human visual understanding and everyday reasoning. We argue that this limitation arises from a tendency to approach visual reasoning primarily as passive semantic retrieval, rather than as active, situated reasoning that depends on autonomous visual exploration. As a result, most existing benchmarks primarily assess Passive Capacity, leaving this aspect of reasoning largely unmeasured. To address this gap, we introduce the Visual Implicit Reasoning Diagnosing Benchmark (V-IRD), which targets this missing quadrant by requiring models to derive answers strictly through autonomous visual analysis. Our results show that, despite strong retrieval abilities, prominent VLMs struggle to utilize reference objects and to attend to visual evidence that requires self-directed inquiry. Simply put, strong semantic recognition does not equate to active visual exploration, revealing a critical gap in current VLMs. More information can be found at https://haoychen.github.io/Implicit-Reasoning/