SkinR1-Qwen2.5-VL-7B-LoRA

This repository contains the LoRA adapter weights for SkinR1, a dermatology-focused vision–language model that enhances clinical reasoning, lesion differentiation, and hierarchical dermatological diagnosis.

This repository provides:

• adapter_config.json
• adapter_model.safetensors

These LoRA weights must be loaded on top of the base model.

Load the LoRA adapter with PEFT, and inference

from transformers import AutoModelForVision2Seq, AutoProcessor
from peft import PeftModel

# base model
base_model = "Qwen/Qwen2.5-VL-7B-Instruct"
# lora weights
lora_id = "zml5418/SkinR1-Qwen2.5-VL-7B-LoRA"

# Load processor
processor = AutoProcessor.from_pretrained(base_model, trust_remote_code=True)

# Load base model
model = AutoModelForVision2Seq.from_pretrained(
    base_model,
    device_map="auto",
    trust_remote_code=True
)

# Load LoRA adapter
model = PeftModel.from_pretrained(model, lora_id)

# Switch to evaluation mode
model = model.eval()


### Run inference

from PIL import Image

messages = [
    {
        "role": "user",
        "content": [
            {"type": "image", "image": Image.open("your_image.jpg")},
            {
                "type": "text",
                "text": "What abnormality is present in this dermatology image?"
            }
        ]
    }
]

# Prepare inputs
text = processor.apply_chat_template(
    messages,
    tokenize=False,
    add_generation_prompt=True
)

inputs = processor(
    images=messages[0]["content"][0]["image"],
    text=text,
    return_tensors="pt"
).to(model.device)

# Generate diagnosis
outputs = model.generate(
    **inputs,
    max_new_tokens=256,
    do_sample=False
)

print(processor.batch_decode(outputs, skip_special_tokens=True)[0])