实例检索中基于混合属性距离的相似性度量
作者:
作者单位:

同济大学 电子与信息工程学院,同济大学 电子与信息工程学院,同济大学 机械与能源工程学院

作者简介:

通讯作者:

中图分类号:

TB115

基金项目:

上海市科委同济大学—青浦区科技合作项目


Similarity Measurement for Retrieval Based on Hybrid Attribute Distance
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    提出了一种基于混合属性距离的相似性度量方法.利用各个属性间的距离及其组合权重求得实例间的总体距离,再用实例间的总体距离来刻画其相似程度.基于区间数的距离计算公式和模糊集合理论,给出了属性值为模糊数、模糊区间数时的距离公式,并改进了属性值为隶属度函数时的距离公式.同时考虑了属性权重问题,提出了一种基于距离离差信息的客观赋权方法,将主观权重和客观权重加以组合,以组合权重来计算实例的全局相似度.以阀门的概念设计为例,验证了该方法在实例检索中的的可行性和合理性.

    Abstract:

    A new similarity measure method based on hybrid attribute distance was introduced. Overall distance between two cases was determined by distances between attributes and synthesis weights. First, a degree of similarity was characterized by overall distance. Based on the distance formula of interval numbers and the theory of fuzzy set, a distance formula of fuzzy numbers and fuzzy interval numbers was given and the distance formula of membership function was improved. Meanwhile, the deviation information of distance values was used to calculate objective weights regarding weights assignment, then objective weights and subjective weights were integrated into synthesis weights to calculate the overall similarity of the cases. Lastly, the method was applied to the conceptual design of valve. The effectiveness and feasibility of the method in case retrieval were demonstrated.

    参考文献
    相似文献
    引证文献
引用本文

朱芳来,董志豪,徐立云.实例检索中基于混合属性距离的相似性度量[J].同济大学学报(自然科学版),2015,43(7):1089~1096

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2014-07-21
  • 最后修改日期:2015-04-24
  • 录用日期:2015-01-16
  • 在线发布日期: 2015-07-13
  • 出版日期:
文章二维码