关键词: 航天产品装配, 技术问题, 知识挖掘, 主题模型, 知识推荐

Abstract: Considering the difficulties in predicting the technical problems and applying the existing knowledge recommendation methods in assembly site due to the characteristics of spacecraft production,the scenario and key factors of technical problems were studied in depth,and a knowledge recommendation method for spacecraft assembly site technical problems was proposed.The organization model of technical problem knowledge instances and problem scenario was proposed to realize the standardized expression of technical knowledge.Then the topic model was used to extract the topic features of the problem scenario,and the key attributes of the technical problems were filtered based on the topic vector of scenario to achieve the quantitative representation of the technical problems.Through the recognition of the characteristics of the current problem scenario,the knowledge recommendation was realized by using the retrieval algorithm.The effectiveness of the method was verified by the experiments on the actual enterprise data set.

Key words: aerospace product assembly, technical problems, knowledge mining, topic model, knowledge recommendation