arXiv Computer Vision By Suguru Onda, Matthew Bailey, Ryan Farrell

Semantic Capability Acquisition and Specialization During Vision-Language Model Fine-Tuning

Read the original on arXiv Computer Vision →

The paper investigates how vision‑language models acquire and specialize semantic capabilities during fine‑tuning, proposing a trajectory‑based framework that separates acquisition, optima, and specialization phases. It introduces Structured Semantic Routing (SSR) to analyze how supervision representation affects what is learned, showing that SSR improves name‑free attribute‑profile retrieval and that different capabilities peak at different training stages. The study reveals that continued optimization can preserve target‑class retrieval while diminishing transferable semantic knowledge, highlighting a trade‑off between specialization and generalization.

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