A Cooperative, Spatial, and Evolutionary Medical Database System

小行星9224559 SDB：一个协作的、空间的、进化的生物医学数据库系统 这是一个为期三年的连续奖励的第一年资助。 本研究的目的是开发一个分布式的基于知识的多媒体数据库系统的生物医学应用与协同查询应答能力。 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，所提出的数据模型捕捉空间和进化的语义，从而大大提高了高层次的查询能力。 从分割软件获得图像对象及其特征，并存储在数据库中。 使用从领域知识导出的规则，可以回答近似和概念查询。 与查询相关的附加信息可以通过关联主题的不同层次来提供。 类型抽象层次（TAH）概括了查询的范围，而松弛控制，基于用户配置文件和查询上下文，修剪TAH，并保持可管理和适当的概括。 解释系统跟踪松弛路径，并提供近似答案与精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测试平台中进行了验证。 加州大学洛杉矶分校计算机科学系和医学院之间的联合研究确保了原型系统对放射学研究和实践的直接兴趣。 本文的研究成果可以推广到其他多媒体数据库应用中。 ***

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. ***