db.index.vector.queryNodes(indexName :: STRING, numberOfNearestNeighbours :: INTEGER, query :: ANY) :: (node :: NODE, score :: FLOAT) 1. 2. // 使用db.index.vector.queryRelationships查询关系向量索引 db.index.vector.queryRelationships(indexName :: STRING, numberOfNearestNeighbours :: INTEGE...
"CALL db.index.vector.queryNodes($index, $k, $embedding) " "YIELD node, score ") + retrieval_queryThe retrieval query must return the following three columns:text: Union[str, Dict] = Value used to populate page_content of a documentscore: Float = Similarity scoremetadata: Dict = Addition...
Since Neo4j is a native graph database, the vector index implementation in LangChain allows customization and enrichment of the returned information. However, this feature is intended for more advanced users as you are responsible for custom data loading as well as retrieval. The retrieval_query pa...
we already have all the virutal graph methods but they actually just wrap existing nodes and rels call db.index.fulltext.queryNodes("movieFulltext","Forrest Gump", {limit:1}) yield node as n, score as s1 call db.index.vector.queryNodes("moviePlotsEmbedding",5, n.plotEmbedding) yield no...
full-text-indexes.adoc overview.adoc vector-indexes.adoc syntax.adoc planning-and-tuning index.adoc operators operators-detail.adoc query-tuning.adoc query-tuning index.adoc indexes.adoc values-and-types spatial.adoc 4 changes: 2 additions & 2 deletions 4 antora.yml Original file lin...
CALL db.labels() YIELD label RETURN count(label) AS db_labels Calls the built-in procedure db.labels inside a larger query to count all labels used in the database. Calls inside a larger query always requires passing arguments and naming results explicitly with YIELD. FINISH MATCH (p:Person...
query_engine = vector_index.as_query_engine() 5、自定义组合查询引擎 该查询策略同时使用向量相似度和KG实体检索(基于向量、基于关键字、混合)。请参阅示例片段如下: neo4j_vector_retriever = VectorIndexRetriever(index=vector_index) neo4j_kg_retriever = KGTableRetriever( ...
What's the 'text_node_property' in Neo4jVector? 030September 16, 2024 Pruning results for cypher query in Neo4j Community edition 5.7.0 cypher,gds 351September 11, 2024 Is neo4j the best tool to find all possible multi-hop paths between two nodes ...
• From Local to Global: A Graph RAG Approach to Query-Focused Summarization[2] 目前微软开源的Microsoft GraphRAG[3]项目支持对文档进行分块、向量化、抽取实体和关系然后保存为本地知识图谱文件,暂不支持将数据存储到 Neo4j。Noej4 的开源项目LLM Graph Builder[4]分为前后端,支持上传图片、文档等资料...
https://neo4j-contrib.github.io/neo4j-apoc-procedures/#_virtual_nodes_rels 提供的函数 存储过程应有尽有, 也可以自行实现添加 CALL apoc.help("dijkstra") Apoc配置: apoc.trigger.enabled=false/true : Enable triggers 1. apoc.ttl.enabled=false/true: Enable time to live back...