To make use of the knowledge and experience embedded in previous aircraft concepts, as well as improve the quality and efficiency of design by using existed information, application of case-based reasoning has been investigated. In this paper, an adapted flow of applying this technique is firstly presented according to the process of conceptual design, and the traditional methods for two tasks in this flow, i.e., case representation and retrieval, have been improved. Considering the complexity of aircraft and dynamic increase of information during conceptual design, a hierarchy model was proposed to represent a concept as aggregation of sources, groups, segments and attributes. Based on this model, a hierarchy nearest-neighbor method and a method called distance criterion for calculating group similarity were proposed to retrieve the “best-matching” case. These methods have been implemented in a design system and an example is presented to validate their effectiveness.
{"title":"Case-Based Reasoning for Developing Initial Aircraft Concepts","authors":"Hu Liu, Xin-lai Lu, Mingqiang Luo, Zhe Wu","doi":"10.2514/6.2006-1487","DOIUrl":"https://doi.org/10.2514/6.2006-1487","url":null,"abstract":"To make use of the knowledge and experience embedded in previous aircraft concepts, as well as improve the quality and efficiency of design by using existed information, application of case-based reasoning has been investigated. In this paper, an adapted flow of applying this technique is firstly presented according to the process of conceptual design, and the traditional methods for two tasks in this flow, i.e., case representation and retrieval, have been improved. Considering the complexity of aircraft and dynamic increase of information during conceptual design, a hierarchy model was proposed to represent a concept as aggregation of sources, groups, segments and attributes. Based on this model, a hierarchy nearest-neighbor method and a method called distance criterion for calculating group similarity were proposed to retrieve the “best-matching” case. These methods have been implemented in a design system and an example is presented to validate their effectiveness.","PeriodicalId":133389,"journal":{"name":"44th AIAA Aerospace Sciences Meeting and Exhibit","volume":"163 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133123499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：