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中文摘要：
移动网络技术的迅猛发展以及移动设备终端的日益普及，使得移动应用需求迅猛增长，特别是移动搜索，成为研究的热点。自动问答是一种重要的搜索形式，相对于传统的搜索方式，问答系统能更好地改善搜索质量，提供更全面、准确的知识检索服务。综述和分析信息检索以及本体研究现状可以看出，领域本体已经被广泛的引入到信息检索领域，通过领域本体和知网，可以实现查询关键词的语义扩展，从而提供更灵活、丰富的查询功能。而目前人们普遍缺乏急救知识，构造急救知识领域本体并应用到一个实际的移动问答系统之中，并将问答系统应用到移动设备上，增加了人们获取急救知识的渠道。当危急事件发生时，人们可以通过手机及时获取急救知识，能减少生命财产损失。另外，急救知识问答系统在手机等移动设备上实现，也为知识管理等研究提供了一个全新的接入方式。
英文摘要：
With the wireless technology developing dramatically and the wireless devices becoming popular gradually, the demand of wireless application increased, which is the research hotspot at present, especially the mobile search. Question answering is an important form of search, which can provide comprehensive and accurate knowledge retrieval services： Overview and analysis the development of information index and ontology research, ontology had been applied into information index fields widely. Based on domain ontology and How-Net, the expanded semantic query is implemented. Through First-aid Knowledge ontology and answers set of First-aid knowledge and mobile platform, a questions answering system is constructed. Acquiring First- aid knowledge through this system, life and belongings of people will be protected in good time when emergencies happen. Meanwhile, this system also is an extend of research on Knowledge Management in mobile domain.
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