source_doc: "Master_Thesis.pdf" rag_mode: "auto-merging retrieval" llm_openai_model: "gpt-4o-mini" embed_model: "BAAI/bge-small-en-v1.5" chunk_sizes: [2048, 512] similarity_top_k: 8 rerank_model: "cross-encoder/ms-marco-MiniLM-L-2-v2" rerank_top_n: 2