MentalThink: Shaping Thoughts in Mental SVG World
We introduce MentalThink, a visual-symbolic reasoning paradigm that equips Multimodal LLMs (MLLMs) with an executable mechanism for "mental" visualization. The core of MentalThink is a think-with-SVG pipeline, where the model learns to generate, render, and interpret scalable vector graphics (SVG) code as an intermediate visual representation for multi-turn reasoning. By creating structured vector sketches, the model can externalize spatial hypotheses, inspect them through deterministic rendering, and reason within a constrained geometric space, effectively mimicking the human process of mental imagery. We instantiate this paradigm through a two-stage training framework, combining Supervi...
| Authors | Kangheng Lin, Jisheng Yin, Dingming Li et al. |
|---|---|
| Primary category | cs.AI |
| Published | 3 July 2026 |
| Last updated at source | 3 July 2026 |
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