Update README.md: remove external references

README.md

@@ -1,15 +1,3 @@
----
-license: mit
-tags:
-  - knowledge-graph
-  - rag
-  - flow-diffusion
-  - graph-rag
-  - iclr2026
-language:
-  - en
----
-
 # QAFD-RAG
 
 Official code for ICLR 2026 paper: **[Query-Aware Flow Diffusion for Graph-Based RAG with Retrieval Guarantees](https://openreview.net/forum?id=n28wnc2QTc)**
@@ -92,7 +80,7 @@ QAFD-RAG/
 │   ├── retrievers/
 │   │   ├── flow_diffusion.py        # QAFD on NetworkX (entity graph)
 │   │   └── base.py                  # Retriever interface
-│   ├── hipporag_pipeline/           # Passage-entity graph pipeline
+│   ├── passage_entity/           # Passage-entity graph pipeline
 │   │   ├── kg_builder.py            # OpenIE → igraph (entities + passages + facts)
 │   │   ├── graph_adapter.py         # QAFD on igraph (passage-entity graph)
 │   │   ├── retriever.py             # Fact reranking → seed selection → QAFD