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A Genetic Fuzzy Analytical Hierarchy Process Based Projection Pursuit Method for Selecting Schemes of Water Transportation Projects 被引量:1
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作者 JIN Juliang LI Lei +1 位作者 WANG Wensheng ZHANG Ming 《Journal of Ocean University of China》 SCIE CAS 2006年第4期289-294,共6页
The optimal selection of schemes of water transportation projects is a process of choosing a relatively optimal scheme from a number of schemes of water transportation programming and management projects, which is of ... The optimal selection of schemes of water transportation projects is a process of choosing a relatively optimal scheme from a number of schemes of water transportation programming and management projects, which is of importance in both theory and practice in water resource systems engineering. In order to achieve consistency and eliminate the dimensions of fuzzy qualitative and fuzzy quantitative evaluation indexes, to determine the weights of the indexes objectively, and to increase the differences among the comprehensive evaluation index values of water transportation project schemes, a projection pursuit method, named FPRM-PP for short, was developed in this work for selecting the optimal water transportation project scheme based on the fuzzy preference relation matrix. The research results show that FPRM-PP is intuitive and practical, the correction range of the fuzzy rained is both stable and accurate; preference relation matrix A it produces is relatively small, and the result obtherefore FPRM-PP can be widely used in the optimal selection of different multi-factor decision-making schemes. 展开更多
关键词 water transportation project optimal selection of schemes fuzzy analytical hierarchy process projection pursuit genetic algorithm
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基于地面激光雷达的洞库容量计量 被引量:5
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作者 程效军 熊鑫鑫 +1 位作者 杨泽鑫 杨荣淇 《激光与光电子学进展》 CSCD 北大核心 2019年第23期158-166,共9页
针对现有基于点云的容量计量模型的缺陷,本文提出一种改进的洞库容量计量模型。首先,在高度方向上将洞库点云数据由下至上切割为若干微元体;采用提出的分层投影法准确地提取截面轮廓点,基于改进的截面轮廓点排序算法正确地构建截面轮廓... 针对现有基于点云的容量计量模型的缺陷,本文提出一种改进的洞库容量计量模型。首先,在高度方向上将洞库点云数据由下至上切割为若干微元体;采用提出的分层投影法准确地提取截面轮廓点,基于改进的截面轮廓点排序算法正确地构建截面轮廓多边形,使用坐标解析法计算截面积;考虑洞库的构造特点,分别采用柱体模型与棱台模型计算洞库的下部边墙及上部拱顶的微元体体积;最后,由下至上累加微元体的体积即可获取洞库容量表。选用三个具备代表性的洞库片段数据进行方法验证,实验所得洞库容量表的精度优于规范要求1个数量级,说明本文方法对复杂的洞库结构具有良好的适应性。 展开更多
关键词 测量 洞库容量 分层投影法 截面轮廓点排序 点云切片 地面激光雷达
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