Based on the intelligence . we can first train the bp network using the standard records from the final users , then , the network can process the raw data from various sources , and reach its own conclusions . not as normally the ann systems do , our model outputs a fuzzy set to act as the final dss result . during the whole procedure , the core lies in the bp network about the model ' s efficiency and its effectiveness . as a rule , a commonly multipurposed solution falls behind the specially single - purposed one in its efficiency and effectiveness , so much of work has been put into the try to improve the whole ststem performance , which was largely dependent on the special attributes of the data from the definite final user 在这个基本模型网络中,使用用户提供的标准数据对网络进行训练,从而使其记住标准的数据模式是整个网络智能决策的关键所在。在我们的模型中,一方面要考虑到网络的正确分类的能力问题,另一方面,我们又不得不考虑网络的效率问题。对这些问题的研究和解决是我们在这个模型中的一个主要着力点,我们将针对我们的模型所面对的用户数据的典型特点,对网络进行应用试验和改造,使得网络能针对我们的数据有最佳的效率和性能。
They are kernel knowledge of distributed multidatabase too0 then , based on a reasonable classified frame of schema collision , the paper probes into the strategies realizing schema integration and query decomposition using the good " low coupling , high cohesion " characteristics of component ; and then , a improved model of federal database architecture is designed exerting the virtue of independence and assembly of component < , at last , i had completed the work of developing a demo for the integration of audit information systems with the helps of others , which proved that the improved model of federal database architecture is practicalo 我在提出一个合理的模式冲突分类框架的基础上,探讨了如何运用组件技术的低耦合、高内聚的良好特性来实现数据模式集成和查询分解的策略;同时,运用组件技术的独立性和可装配的优点,设计了一个改进的联邦数据库体系结构模型。最后,在上述理论的指导下,本人与协作者完成了湖南省审计厅信息集成原型系统的设计和开发,总体上证实了改进后联邦数据库体系结构模型的可行性。
The flexible data model and open access characterstics of xml can provide powerful for the information intergration systems , so xml - based information intergration is much fitter for data interchanging and sharing than traditional systems , and has attracted various efforts in the past decades 同时由于xml灵活的数据模式和开放的数据访问可以为信息集成提供强大的支持,因此基于xml的信息集成系统比传统信息集成系统更适合数据交换及共享,并已经引起了多方的广泛关注。
This paper studies about the storage and search technology of xml , which is a kind of semi - structured data . first it analysis the trend of data organization in web , discusses the characteristic and the application of semi - structured data which fits for the web information organization , clarifies the storage and mapping method of xml based on relational database : the mapping theory and method between document type definition and relational database 分析了web上数据组织的发展趋势,讨论了适合web信息的合理组织模式? ?半结构化数据模式的特点和用途,研究了在智能检索系统中xml这种半结构化数据的组织管理等问题,阐明了基于关系数据库的xml数据存储映射方法,即dtd文档与关系数据库视图之间的互映射理论基础和方法。