arXiv AI By Junxi Wu, Yiwen Guo, Shu-Tao Xia

Compute Has Shape: Self-Morphing the Internal Computation of Frozen LLMs

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The paper introduces SelfMorph, a method that lets frozen large language models adapt their internal computation topology at inference time based on the input. It combines three morphing strategies—BASE, REPEAT, and BRANCH—into a unified space and uses a lightweight selector trained via distillation to choose the best morphology for each prompt. Experiments on 4B–27B models show that SelfMorph improves performance by an average of 8.06% on in‑distribution benchmarks and 4.45% on unseen benchmarks, outperforming other settings in most cases.

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