基于城市安全知识图谱的多关键词流式并行检索算法

Multi-keyword Streaming Parallel Retrieval Algorithm Based on Urban Security Knowledge Graph

With the popularization and construction of the concept of smart city security in China,and the deep application of big data in the construction of smart city security,higher requirements on the processing response speed of keyword retrieval are needed.Aiming at this problem,this paper proposed a streaming multi-keyword parallel retrieval algorithm based on the urban security knowledge graph (MKPRASKG).This algorithm can construct a query subgraph set based on the entities of knowledge graph through the construction,pruning and fusion operation of the associated class graphs based on the query keywords input by the user in real time.And then combined with the scoring function,the high-scoring query subgraph is used as a guide,and the parallel search is performed in the knowledge graph instance data,and finally the Top-k query results are returned.Experimental results show that this algorithm has great advantages in terms of real-time search,response time,search effect and scalability.