Finalize license

README.md

@@ -1,5 +1,5 @@
 ---
-license: unknown
+license: cc0-1.0
 task_categories:
 - tabular-classification
 - feature-extraction
@@ -84,6 +84,8 @@ mapping = hf_hub_download(repo_id="autoencodix/tcga", repo_type="dataset", filen
 
 ## License
 
-**Needs to be finalized.** This data derives from the TCGA PanCancer Atlas, governed by
-the NIH Genomic Data Sharing Policy rather than a standard copyright license (e.g.
-CC-BY). The Reactome pathway groupings are separately licensed under CC0 by Reactome.
+**CC0 1.0 (Public Domain Dedication).** The TCGA PanCancer Atlas open-access data
+(RNA, methylation, mutation, clinical) is designated public domain by the NIH Genomic
+Data Commons, with no restrictions on reuse. The Reactome pathway groupings in
+`ontology/` are separately licensed under CC0 by Reactome. The synthetic `xmodalix/`
+images are generated by this project and released under the same CC0 terms.