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Core recurrence

Retrofitted Recurrent VLMs

Retrofitting Recurrent Vision-Language Models from Pretrained Backbones

Madhav Iyengar, Andreas Geiger, Hilde Kühne

Retrofits depth recurrence into a pretrained vision-language model by pruning language-backbone layers and looping a subset of the rest, with a linear adapter merging each loop's output with earlier token representations. A three-stage recovery with distillation from the original model restores quality.

Inside the method

Early layers → [ Looped subset + linear adapter ] × r → late layers

Simplified conceptual schematic. Consult the paper for the complete architecture.

Recurrence family
Core recurrence
Depth control
Fixed recurrence
KV / state strategy
See paper

Reading note

On TinyLLaVA-1.4B, without new vision-language data, it outperforms the unpruned baseline trained on the same recovery data while storing 23.3% fewer language parameters, with gains mainly on reasoning-oriented benchmarks.

Sources checked 2026-10-28. This catalog does not imply independent reproduction.

Related works

Cite this work

@misc{recurrentvlmretrofit2026,
  title = {Retrofitting Recurrent Vision-Language Models from Pretrained Backbones},
  author = {Madhav Iyengar and Andreas Geiger and Hilde Kühne},
  year = {2026},
  eprint = {2610.22075},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.22075}
}

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