updated readme

README.md

@@ -18,10 +18,10 @@ This repository provides the **local ontology database** to be used by StructSen
 - **2,683,756 synonyms**
 - Data storage:
   - **SQLite** → structured ontology data (`bioportal.db`) 
-  - **ChromaDB** → vector embeddings (see `bioportal_chroma`) for semantic retrieval 
+  - **Embeddings** → vector embeddings (to be uploaded)
 
 
-Vector embeddings (includes label + synonyms + alternative labels + definition) are generated using the `BAAI/bge-large-en-v1.5` model to enable high-quality semantic similarity search.
+Vector embeddings (includes preferred label + definition + synonyms + alternative labels + parent labels + ontology context) are generated using the `BAAI/bge-small-en-v1.5` model to enable high-quality semantic similarity search.
 
 
 ## Database Schema (Main Tables)