Internalized Reasoning for Long-Context Visual Document Understanding
Visual long-document understanding is critical for enterprise, legal, and scientific applications, yet the best performing open recipes have not explored reasoning, a capability which has driven leaps in math and code performance. We introduce a synthetic data pipeline for reasoning in long-document understanding that generates thinking traces by scoring each page for question relevance, extracting textual evidence and ordering it from most to least relevant. We apply SFT to the resulting traces within \texttt{<think>} tags, gated by a \texttt{<cot>} control token, and the resulting reasoning capability is internalized via low-strength model merging. We study Qwen3 VL 32B and Mistral Smal...
| Authors | Austin Veselka |
|---|---|
| Primary category | cs.CV |
| Published | 31 March 2026 |
| Last updated at source | 29 June 2026 |
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