LightRAG项目：如何插入自建知识图谱及其对社区摘要和Embedding计算的支持详解

实体关系来源于多个文档块，LightRAG会在生成的实体和关系的sourc_id字段中说明其来源的chunk_id的。LightRAG也会维持一个doc_id和chunk_id之间的关系。因此不需要在文档中做特别的说明的，而且这些id都是自动生成的，也无法事先知道。

由于我所有的实体、关系、chunk都是通过readme中介绍的Insert Custom KG的方式导入的，并没有使用自动建图的逻辑。所以不太清楚Insert Custom KG中source_id如果有多个的话应该如何输入

custom_kg = {        "chunks": [            {                "content": "Alice and Bob are collaborating on quantum computing research.",                "source_id": "doc-1",                "file_path": "test_file",            }        ],        "entities": [            {                "entity_name": "Alice",                "entity_type": "person",                "description": "Alice is a researcher specializing in quantum physics.",                "source_id": "doc-1",                "file_path": "test_file"            },            {                "entity_name": "Bob",                "entity_type": "person",                "description": "Bob is a mathematician.",                "source_id": "doc-1",                "file_path": "test_file"            },            {                "entity_name": "Quantum Computing",                "entity_type": "technology",                "description": "Quantum computing utilizes quantum mechanical phenomena for computation.",                "source_id": "doc-1",                "file_path": "test_file"            }        ],        "relationships": [            {                "src_id": "Alice",                "tgt_id": "Bob",                "description": "Alice and Bob are research partners.",                "keywords": "collaboration research",                "weight": 1.0,                "source_id": "doc-1",                "file_path": "test_file"            },            {                "src_id": "Alice",                "tgt_id": "Quantum Computing",                "description": "Alice conducts research on quantum computing.",                "keywords": "research expertise",                "weight": 1.0,                "source_id": "doc-1",                "file_path": "test_file"            },            {                "src_id": "Bob",                "tgt_id": "Quantum Computing",                "description": "Bob researches quantum computing.",                "keywords": "research application",                "weight": 1.0,                "source_id": "doc-1",                "file_path": "test_file"            }        ]    }rag.insert_custom_kg(custom_kg)