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公众议题知识库用于描述社会化媒体中讨论的公众事件、话题、参与议题的关键人员和机构,与之相关的时间、地点以及它们之间动态的关联。知识库的本体设计采用多层结构:核心层包含公众议题,即公众参与讨论的事件和话题,扩展层包含参与议题发展过程的关键人员、机构及地理位置,支撑层包含有关的微博文档。同时本体还描述时间维度,以支持对事件发展过程的表示和分析。知识库可以支持议题概貌、发展趋势、相关议题的查询与分析。
The public topic knowledge base is used to describe the public events, topics discussed, the key people and agencies involved in the topics, the time and place associated with them, and the dynamic linkages between them. The ontology design of the knowledge base adopts a multi-layer structure: the core layer contains public topics, that is, the events and topics for public participation and discussion. The extension layer includes the key personnel, institutions and geographical locations involved in the topic development process, and the support layer contains relevant microblog documents. At the same time ontology also describes the time dimension to support the presentation and analysis of the event development process. Knowledge base can support the overview of issues, trends, relevant issues inquiries and analysis.