摘要
提高数据库访问准确性,可以减少数据访问次数,提高数据库访问的性能。由于异构性数据库内采用不同的接入技术接入不同类型的网络,导致数据库内存在着接口不统一的问题。传统的访问算法,在访问数据库时,需要对不统一的接口进行不断匹配直到实现接口的统一,造成数据库访问过多,耗时长且效率低,降低了数据库访问准确性。提出采用主题模型的数据库访问准确性优化算法,针对主题模型数据库目标,采用均衡指向性算法和纵向效用指向性算法,在主题模型的数据库中将访问数据传输分配到系统中。根据不同访问数据需求,通过多维度分析主题模型数据库,计算出不同访问条件属性,并进行加权计算调整指向性语义。仿真结果表明,改进的数据库访问准确性优化算法比传统算法访问综合性能提高,改善了原有数据库访问过程时间长,频率低等缺点,提高了数据库访问的准确性。
In this paper,we proposed an accuracy optimization algorithm of database access based on topic model.Firstly,we used the balance directivity algorithm and vertical utility directivity algorithm to assign the access data in database of topic model to system aiming at database objective of topic model. Then we analyzed the topic model database through multi- dimension and worked out different access condition attribute according to different requirement of access data. Finally,we conducted weighting calculation to adjust the directivity semantic. The simulation results show that the modified algorithm can enhance the access combination property compared with traditional algorithm,and improve the accuracy of database access.
出处
《计算机仿真》
CSCD
北大核心
2016年第10期450-453,共4页
Computer Simulation
