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1. 浙江大学电气工程学院,浙江省 杭州市 310027
2. 浙江华云信息科技有限公司,浙江省 杭州市 310012
邵冠宇(1994—),男,硕士研究生,主要研究方向:电网文本挖掘、电力系统自然语言处理。
王慧芳(1974—),女,通信作者,博士,副教授,主要研究方向:智能电网多模态数据挖掘、电网状态检修、继电保护与控制等。E-mail:huifangwang@zju.edu.cn
吴向宏(1980—),男,助理工程师,主要研究方向:电力系统软件开发。
收稿日期:2019-04-01,
修回日期:2020-03-11,
网络出版日期:2020-06-02,
纸质出版日期:2020-06-25
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邵冠宇,王慧芳,吴向宏等.基于依存句法分析的电力设备缺陷文本信息精确辨识方法[J].电力系统自动化,2020,44(12):178-185.
SHAO Guanyu,WANG Huifang,WU Xianghong,et al.Precise Information Identification Method of Power Equipment Defect Text Based on Dependency Parsing[J].Automation of Electric Power Systems,2020,44(12):178-185.
邵冠宇,王慧芳,吴向宏等.基于依存句法分析的电力设备缺陷文本信息精确辨识方法[J].电力系统自动化,2020,44(12):178-185. DOI: 10.7500/AEPS20190401001.
SHAO Guanyu,WANG Huifang,WU Xianghong,et al.Precise Information Identification Method of Power Equipment Defect Text Based on Dependency Parsing[J].Automation of Electric Power Systems,2020,44(12):178-185. DOI: 10.7500/AEPS20190401001.
电力设备缺陷文本包含大量设备缺陷历史信息,从文本中精确辨识缺陷信息,可提供对于设备的故障率建模和健康状态评价问题的有效指导。引入依存句法分析技术,提出“左贪心”出栈规则和基于神经网络的依存关系状态转移分析模型,实现了电力设备实际缺陷文本和缺陷分类标准文本的依存句法树构建,并结合缺陷文本特点提出了电力设备依存句法树的剪枝、切分和重构方法。同时,提出了基于依存关系的树匹配算法,实现实际缺陷和标准缺陷依存句法树的匹配。以主变压器缺陷文本为例,研究了基于依存句法分析的缺陷信息辨识方法的可行性和有效性。结果表明,所提方法相比于其他树匹配算法和语义相似度计算方法在效率和准确性上有明显提升。
Power equipment defect text contains a lot of historical defect information of the equipment. The accurate information identification from defect text can provide effective guidance for equipment failure rate modeling and health status evaluation. By introducing dependency parsing technology
“left-greedy” out stack rule and neural network based dependency state transition analysis model are proposed. This paper implements the dependency-syntax-tree construction of actual defect text and defect classification standard text of power equipment
and proposes a method of pruning
segmentation and reconstruction of power equipment dependency syntax tree using the characteristics of the defect text. Meanwhile
dependency relationship based tree matching algorithm is proposed to match actual defects with standard defect dependency syntax trees. The feasibility and effectiveness of defect information identification method based on dependency syntax analysis is illustrated with the example of main transformer defect text. The results show that the efficiency and accuracy of the proposed method are improved substantially compared with other tree matching algorithms and semantic similarity computation methods.
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