---
base_model: ibm-granite/granite-vision-4.1-4b
library_name: peft
tags:
- colbert
- late-interaction
- visual-retrieval
- colpali
---

# ColGranite 4.1-4B — LoRA Adapter

Late-interaction (ColBERT-style) visual retrieval adapter on top of
[`ibm-granite/granite-vision-4.1-4b`](https://huggingface.co/ibm-granite/granite-vision-4.1-4b).

## Contents
- `adapter_config.json`, `adapter_model.safetensors` — LoRA adapter (text-decoder projections)
- `col_linear_head.pt` — the trained 2560 to 128 projection head (REQUIRED for retrieval)
- processor / tokenizer files

## Usage
Rebuild the `ColGranite` wrapper, attach this adapter to the inner model with
`PeftModel.from_pretrained(...)`, then load `col_linear_head.pt` into the projection head.