During the retrieval process of highly reliable mobile communication network database in cross domain,it is easy for attackers to modify the data,leading to a decrease in data retrieval accuracy and efficiency.Therefore,the research is conduc-ted on cross domain security retrieval method of highly reliable mobile communication network database.The ciphertext index is determined through the master key pair,user private key,and public key,and the ciphertext index is combined to obtain the security query index,the keywords of the security query index are extraced.By improved TF-IDF weight method,the correla-tion score of index keywords is determined,and the correlation score is combined to rank and filter the retrieval results,the re-trieval results are returned to the data user to complete cross domain security retrieval.The experimental results show that the recall,precision,and efficiency of this method's retrieval results are higher,and the retrieval effect is good.
关键词
移动通信网络/数据库/安全查询索引/改进TF-IDF权值方法/相关度分数
Key words
mobile communication network/database/security query index/improved TF-IDF weight method/correlation score
维普
万方数据