# Ar-CXR License (composite, research-only)

Ar-CXR is **not** distributed under a single permissive license. It is a derivative
of multiple components, each with its own terms. **You must comply with all of the
upstream licenses below, and with the most restrictive where they overlap.**

## 1. Ar-CXR adapters & code (this repository)
The trained adapters (`weights/`), configuration, and code (`modeling_ar_cxr.py`,
`export_to_hf.py`) are released by Vionex Digital Solutions **for non-commercial
academic research only**, with no warranty. They are **not** a medical device and
must not be used for clinical decision-making. Redistribution must retain this
notice and the disclaimers in `README.md` and `NOTICE.md`.

## 2. Decoder base — Falcon-H1-7B-Instruct
`tiiuae/Falcon-H1-7B-Instruct` is governed by the **TII Falcon-LLM License 2.0**.
You must accept and comply with it to download and use the base decoder:
https://huggingface.co/tiiuae/Falcon-H1-7B-Instruct

## 3. Vision base — RAD-DINO-MAIRA-2
`microsoft/rad-dino-maira-2` is governed by its **Microsoft Research license**
(research use). You must accept and comply with it to download and use the base
vision encoder:
https://huggingface.co/microsoft/rad-dino-maira-2

## 4. Training data — CheXpert-Plus
Ar-CXR was trained on derivatives of **CheXpert-Plus**, governed by the Stanford
CheXpert-Plus **Data Use Agreement**. The translated training corpus is **not**
redistributed in this repository. The CheXpert-Plus terms (non-commercial
research, no re-identification, no redistribution of the imaging data) extend to
models and derivatives trained on it.

By downloading or using Ar-CXR you agree to all of the above.