知识图谱在电力设备缺陷文本查错中的应用问题与对策  

Application Problems of Knowledge Graph in Text Error Checking of Power Equipment Defects and Corresponding Countermeasures

作　　者：李彦儒 陈耀军 王慧芳[1] 吴向宏 LI Yanru;CHEN Yaojun;WANG Huifang;WU Xianghong(College of Electrical Engineering,Zhejiang University,Hangzhou 310027,China;Zhejiang Huayun Information Technology Co.,Ltd,Hangzhou 310012,China)

机构地区：[1]浙江大学电气工程学院,杭州310027 [2]浙江华云信息科技有限公司,杭州310012

出　　处：《电力系统及其自动化学报》2022年第7期113-119,128,共8页Proceedings of the CSU-EPSA

摘　　要：在基于知识图谱技术的电力设备缺陷文本查错等方法的工程化应用过程中,发现存在词汇歧义等问题,同时知识图谱更新也缺乏应对措施。本文通过将歧义实体词与相邻词汇合并为新实体词加入电力本体字典实现实体消歧,并明确电力本体字典按词汇长度降序排列的规则。同时,提出了通过文本查错来筛选新知识的方法和通过文本路径查找来筛选退化知识的方法,并在知识图谱更新后通过文本查错校验知识的完整性。实验结果表明,消歧方法提高了知识图谱的准确性,知识图谱更新方法能够妥善地将新知识融入知识图谱,切实提高了缺陷文本知识图谱的应用效果。In the process of engineering applications of methods based on the knowledge graph technology such as pow⁃er equipment defect text error checking,it is found that there exist problems including vocabulary ambiguity,and the corresponding countermeasures for knowledge graph updating are also lacking.In this paper,entity disambiguation is realized by merging ambiguous entity words and adjacent words into new entity words,which are further added into a power ontology dictionary.In addition,the rules for sorting the power ontology dictionary in descending order of word length is clarified.Meanwhile,a screening method for new knowledge through text error checking and a screening meth⁃od for degenerated knowledge through text path seeking are proposed,and the integrity of knowledge is verified by text er⁃ror checking after the knowledge graph is updated.Experimental results show that the disambiguation method improves the accuracy of the knowledge graph,and the knowledge graph updating method can properly integrate new knowledge into the knowledge graph,which effectively improves the application effect of the knowledge graph of defect text.

关 键 词：知识图谱 电力设备缺陷文本 词汇歧义 知识图谱更新 文本查错 

分 类 号：TM721[电气工程—电力系统及自动化]