【作 者】：
王 琦，周紫云，丁国柱，余胜泉
【关 键 词 】：
本体；语义网；可视化进化；系统架构；学习元
【栏 目】：
学习环境与资源
【中文摘要】：
本体对概念的描述具有明确性和唯一性，能够解决在线学习中知识缺乏组织的问题，进而提高个性化学习效率。然而当前教育领域本体多为预设，难以覆盖全领域概念。加之教育领域知识具有情境性和主观性，要适应情境和学习者的不断变化，本体设计应具有进化性。文章为实现本体构建和进化，设计了本体可视化构建和进化系统，并选取不同主题，借助不同年级的123名学习者，通过语义标注、知识图谱、反向问答三个学习活动进行实验，期望学习者可以利用该系统在完成学习任务的同时促进本体的构建和进化。实验发现，该系统生成和进化了本体三元组3083条,其中主观性知识2431条，验证了系统可以较好地促进本体构建和进化，尤其是促进主观性知识和情境性知识的构建和进化。
【英文摘要】：
Ontology describes the concept with clarity and uniqueness, which can solve the problem of poor organization in online learning and improve the efficiency of personalized learning. However, the ontology in current education is preset, and is difficult to cover the whole domain concept. In addition, the knowledge in education is situational and subjective. In order to adapt to the changes of situation and learners, the design of ontology should be evolutive. To realize the construction and evolution of ontology, this study designs the visualization construction and evolution system of ontology, chooses different themes and 123 learners of different grades, and conducts experiments through semantic annotation, knowledge map and reverse quiz. It is expected that learners can use that system to promote the construction and evolution of ontology while completing their learning tasks. The results indicate that the system generates and evolves ontological triples 3083, among them, 2431 subjective knowledge, which verifies the system can better promote the construction and evolution of ontology, especially the construction and evolution of subjective knowledge and situational knowledge.