A Cooperative, Spatial, and Evolutionary Medical Database System

9224559 Chu SDB：合作的、空间的和进化的生物医学数据库系统这是为期三年的持续奖的第一年资助。本研究的目的是为生物医学应用开发一个具有协同查询应答能力的分布式基于知识的多媒体数据库系统。该系统将能够按内容(特征、对象等)访问图像数据库中的数据。特别是，提出的数据模型捕获了空间和进化语义，从而极大地增强了高级查询能力。从分割软件获取图像对象及其特征，并将其存储在数据库中。使用从领域知识导出的规则，可以回答近似和概念性查询。可以通过关联主题的不同层次来提供与查询相关的附加信息。类型抽象层次结构(Tahs)概括了查询的作用域，而松弛控制基于用户配置文件和查询上下文来裁剪Tahs并保持概括的可管理性和适用性。解释系统跟踪松弛路径，并提供近似答案与准确答案的接近程度的度量。这些概念在与放射学图像数据库链接的试验床中得到验证。加州大学洛杉矶分校计算机科学系和医学院的联合研究确保了原型系统对放射学研究和实践具有直接意义。本文的研究成果可以推广到其他多媒体数据库应用。***

9224559 Chu SDB: A Cooperative, Spatial, and Evolutionary Biomedical Database System This is the first year funding of a three-year continuing award. The objective of this research is to develop a distributed knowledge-based multimedia database system for biomedical applications with cooperative query answering capabilities. The system will be able to access data in image databases by content (features, objects, etc.). In particular, the proposed data model captures spatial and evolutionary semantics and thus greatly enhances high-level query capabilities. The image objects and their features are obtained from segmentation software and are stored in the database. Using rules derived from domain knowledge, approximate and conceptual queries may be answered. Additional information relevant to a query cay be provided by associating different hierarchies of subjects. Type abstraction hierarchies (TAHs) generalize a query's scope while the relaxation control, based on user profiles and query context, trims the TAHs and keeps the generalizations manageable and appropriate. An explanation system tracks the relaxation path and provides a measure of the nearness of the approximate answer to the exact one. These concepts are validated in a testbed linked with radiology image databases. The joint research between the UCLA Computer Science Department and the School of Medicine assures that the prototype systems are of direct interest to radiology research and practice. The results of this research are extensible to other multimedia database applications. ***