基于位置的服务中数据预处理技术的研究

Research on data preprocessing technology in location based services

为了改善基于位置的服务中查询迟缓和信息失效等问题,提出了数据预处理技术。结合移动互联网特点,通过服务器端数据预处理和提前发送,使部分移动终端向服务器端数据库的查询转化为移动终端上本地数据库查询,从而减少等待时间;运用智能学习策略提高服务信息命中率,使其更贴近用户的实际需求。实验结果表明,预处理技术能有效地提高查询效率,降低对不稳定无线网络的依赖性,减少数据的出错和重发。

To improve the slow query and the failure information in location based services （LBS）,the data preprocessing technology is proposed.Combined with the characteristics of the mobile Internet,Some queries from mobile clients to databases on server is transformed into queries from mobile clients to theirs local databases by data preprocessing and sending ahead so as to reduce the time wasted on waiting.At the same time,the strategy of intelligent learning is used to improve the hit rate for service information,which makes services more suitable to users＇ requirements.The experiments show that the technology of data preprocessing can improve the query efficiency and reduce the dependence on instability of wireless network with less data errors and data resending.