本体作为语义Web的知识表示模型，在时空数据管理方面也发挥着重要作用并充分体现其在知识表示与语义处理方面的独特优势。然而时空应用领域广泛存在着模糊性，模糊时空数据管理成为了许多学科和领域重要研究内容。但是本体及其模糊扩展形式尚不能表示与处理模糊时空知识。有关本体的模糊时空扩展研究也因此受到高度重视，但研究工作处于起步阶段，许多理论和技术难点亟待解决。因此，开展模糊时空本体技术研究成为语义Web和众多领域实现模糊时空知识管理实际需求且亟待解决的任务。.本项目致力于与模糊时空本体管理密切相关的表示、推理、构建、查询和应用关键技术研究，目标在于形成一套模糊时空本体从表示、推理、构建、查询到应用的完整框架。通过取得一系列原创性研究成果，并开发出支持这些理论框架和技术的原型系统，丰富和发展语义Web和时空领域现有模糊时空信息处理技术，为语义Web和众多领域模糊时空知识管理的实现奠定坚实的理论基础。

Ontology, which is the knowledge representation model for the Semantic Web, is also playing an important role in managing spatio-temporal data since its unique advantages in the aspects of knowledge representation and semantic processing. Nevertheless, fuzziness inherently exists in many spatio-temporal domains and so fuzzy spatio-temporal data management has been a crucial research topic in many subjects and fields. But the current ontologies and their fuzzy extensions cannot represent and handle fuzzy spatio-temporal knowledge. As a result, the researches on fuzzy spatio-temporal ontology are receiving more attention and are in beginning stages, and some theory and technique problems need to be solved urgently. To this end, in-depth studies on the techniques of fuzzy spatio-temporal ontology become important issues to be solved for implementing fuzzy spatio-temporal knowledge management in the Semantic Web and many applications. .The project will investigate several key techniques closely related to fuzzy spatio-temporal ontology management, including representation, reasoning, construction, query, and application. The final purpose is to form a comprehensive knowledge management framework of representation, reasoning, construction, query, and application of fuzzy spatio-temporal ontology. Some original results of these key techniques will be obtained and the prototype, which supports the proposed theoretical frameworks and key techniques, will be developed. As a result, the existing fuzzy spatio-temporal techniques are enriched and evolved, and a solid theoretical foundation can be put for the implementation of fuzzy spatio-temporal knowledge management in the Semantic Web and many applications.