qwen2.5-vl-7b-microscopy-vqa-lora

Qwen2.5-VL-7B Microscopy VQA (LoRA)

Try it: interactive annotator Space (private, ZeroGPU).

A LoRA adapter for Qwen/Qwen2.5-VL-7B-Instruct, fine-tuned for multiple-choice visual question answering on cell-microscopy images: subcellular-structure identification (CHAMMI WTC-11) and cell-line identification (LIVECell). Trained on an AMD Radeon AI PRO R9700 (RDNA4 / gfx1201, ROCm), bf16, as part of a cross-vendor training study.

Tasks

• CHAMMI (single-cell fluorescence): which subcellular structure is labeled (Golgi / Microtubules / Mitochondria / Nuclear speckles).
• LIVECell (phase-contrast): which cell line (A172 / BT474 / BV-2 / Huh7 / MCF7 / SH-SY5Y / SkBr3 / SK-OV-3).

Results (base zero-shot vs this LoRA)

In-domain held-out accuracy:

Choice-order robustness (k=4 option orders) and POPE-style hallucination probe:

Generalization to the held-out MicroVQA expert-reasoning benchmark (NOT trained on): overall 0.507 (base) vs 0.512 (fine-tuned) -- the narrow classification fine-tune sharpens the in-domain tasks and improves robustness/grounding, without transferring to (or harming) broad microscopy reasoning.

Usage

from transformers import Qwen2_5_VLForConditionalGeneration, AutoProcessor
from peft import PeftModel
base = Qwen2_5_VLForConditionalGeneration.from_pretrained(
    "Qwen/Qwen2.5-VL-7B-Instruct", torch_dtype="bfloat16", device_map="auto")
model = PeftModel.from_pretrained(base, "DnaRnaProteins/qwen2.5-vl-7b-microscopy-vqa-lora")
processor = AutoProcessor.from_pretrained("DnaRnaProteins/qwen2.5-vl-7b-microscopy-vqa-lora")

Training

LoRA (r=16, alpha=32) on the LLM projections (q/k/v/o, gate/up/down); vision tower frozen. bf16, gradient checkpointing, batch 1 + grad-accum 8, 4000 steps, images capped at 384x384. ~7.3k MCQ examples (4k CHAMMI class-balanced + 3.3k LIVECell). MicroVQA kept fully held out.

Limitations

Specialized to these two microscopy datasets and the MCQ format; not a general microscopy assistant. Cell-line identification from phase-contrast is inherently hard. Evaluate before any research use; not for clinical/diagnostic use.