毕业设计 基于Python+Flask+Vue的知识图谱(Neo4j)的课程学习智能问答系统源码+详细文档+全部数据资料高分项目

## 一、目录结构 - **neo4j_csv**：知识图谱存储数据 - **os_query**：训练数据集 ## 二、向Neo4j中导入CSV文件 ### 1. 导入节点 #### 错误用法： ```CQL USING PERIODIC COMMIT 10 LOAD CSV FROM "file:///subject.csv" AS line create (a:subject{name:line[0],info:line[1],link:line[2]}) ``` **ERROR: Please use CALL { ... } IN TRANSACTIONS instead** ```cql CALL { LOAD CSV FROM "file:///subject.csv" AS line create (a:subject{name:line[0],info:line[1],link:line[2]}) } IN TRANSACTIONS ``` **ERROR: A query with 'CALL { ... } IN TRANSACTIONS' can only be executed in an implicit transaction, but tried to execute in an explicit transaction.** #### 正确使用： ```cql :auto CALL { LOAD CSV FROM "file:///subject.csv" AS line create (a:subject{name:line[0],info:line[1],link:line[2]}) } IN TRANSACTIONS ``` ```cql :auto CALL { LOAD CSV FROM "file:///module.csv" AS line create (a:module{name:line[0],info:line[1],page:line[2]}) } IN TRANSACTIONS ``` ```cql :auto CALL { LOAD CSV FROM "file:///content.csv" AS line create (a:content{name:line[0]}) } IN TRANSACTIONS ``` ```cql :auto CALL { LOAD CSV FROM "file:///detail.csv" AS line create (a:detail{name:line[0]}) } IN TRANSACTIONS ``` ### 2. 导入关系 ```cql LOAD CSV FROM "file:///relation1.csv" AS line MATCH (from:subject{name:line[0]}),(to:module{name:line[1]}) merge (from)-[r:CONTAIN]->(to) return r ``` ```cql LOAD CSV FROM "file:///relation2.csv" AS line MATCH (from:module{name:line[0]}),(to:content{name:line[1]}) merge (from)-[r:CONTAIN]->(to) return r ``` ```cql LOAD CSV FROM "file:///relation3.csv" AS line MATCH (from:content{name:line[0]}),(to:detail{name:line[1]}) merge (from)-[r:CONTAIN]->(to) return r ``` ### 3. 删除所有节点和关系 ```cql MATCH (r) DETACH DELETE r ```