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基于细分关系的决策表求核与约简算法 被引量:1
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作者 蒋瑜 魏新建 +2 位作者 张娟 林和 李永礼 《计算机工程与应用》 CSCD 北大核心 2006年第20期167-169,共3页
知识约简是粗糙集理论的核心问题之一。在细分关系下对粗集决策表的核与约简进行了讨论,给出了基于细分关系的求核算法,在此基础上提出了两种决策表约简算法:基于格Hasse图的宽度优先算法和RKCC算法,并结合归纳属性约简算法将这两种算... 知识约简是粗糙集理论的核心问题之一。在细分关系下对粗集决策表的核与约简进行了讨论,给出了基于细分关系的求核算法,在此基础上提出了两种决策表约简算法:基于格Hasse图的宽度优先算法和RKCC算法,并结合归纳属性约简算法将这两种算法进行了比较分析。 展开更多
关键词 约简 决策表 细分关系
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零售银行高端客户关系细分和营销资源分配
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作者 关莉莉 《中国电子商务》 2012年第6期204-205,共2页
本文通过对零售银行和其高端客户关系存在的问题进行分析,引出构建客户关系阶段的识别矩阵,结合客户关系生命周期,进行零售银行高端客户关系的细分,在此基础上明确客户关系管理的主要任务,即:新客户获取、高价值客户保持和衰退客... 本文通过对零售银行和其高端客户关系存在的问题进行分析,引出构建客户关系阶段的识别矩阵,结合客户关系生命周期,进行零售银行高端客户关系的细分,在此基础上明确客户关系管理的主要任务,即:新客户获取、高价值客户保持和衰退客户赢回,并提出了以“客户为中心”的资源分配决策框架,为零售银行实施高端客户营销资源分配提供了可操作的措施建议。 展开更多
关键词 零售银行 高端客户 关系细分 资源分配
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一种新型实现高倍编码器细分的软件设计 被引量:4
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作者 贺传敏 杨健武 《电子测量技术》 2008年第8期143-146,共4页
在光栅编码器细分程序设计中的细分位移计算部分,通常使用的方法是通过把2个信号采样值相除变换为求反正切的形式,再求出角度值。介绍一种软件实现的求光栅编码器细分角度的方法,如果计算角度细分可根据直线关系算出来的话,细分计算会... 在光栅编码器细分程序设计中的细分位移计算部分,通常使用的方法是通过把2个信号采样值相除变换为求反正切的形式,再求出角度值。介绍一种软件实现的求光栅编码器细分角度的方法,如果计算角度细分可根据直线关系算出来的话,细分计算会更加简单直观。文中特别说明了编写软件时应当注意的问题。使用该方法,可以提高细分计算的效率和精确度。并且在TI的DSP控制器TMS320F2812上实现并验证了该方法。在文中也给出了Matlab仿真结果及实验测试结果,从实际使用情况看来,同理论的假设仿真结果基本相符,因此是可行的。 展开更多
关键词 线性关系实现细分计算 锯齿波信号的补偿 细分位置象限区间的划分与判定
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Hierarchical Detailed Description for Spatial Direction Relations 被引量:5
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作者 WANG Jing JIANG Gangwu GUO Rui 《Geo-Spatial Information Science》 2008年第1期56-61,共6页
Direction relation is an important spatial relation. Descriptions and representations for direction relations have different levels of detail because of the varying dimensions of spatial objects and different scales o... Direction relation is an important spatial relation. Descriptions and representations for direction relations have different levels of detail because of the varying dimensions of spatial objects and different scales of the embedding spaces. Based on a direction- relation matrix, the hierarchical frame of spatial direction relations which partitions direction relations orderly and thoroughly is built. Interior direction relations are used to perfect the representation of direction relations and the binary-encoding idea is creatively applied to construct an interior detailed matrix describing multiple interior direction relations by a uniform matrix. The model integrates topological information into the description model for direction relations, which will lay the foundations of spatial compositive reasoning. 展开更多
关键词 spatial direction relations direction-relation matrix levels of detail spatial reasoning GIS
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GeoScope:Full 3D Geospatial Information System Case Study 被引量:7
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作者 ZHANG Yeting ZHU Qing +3 位作者 LIU Gang ZHENG Wenting LI Zhonghua DU Zhiqiang 《Geo-Spatial Information Science》 2011年第2期150-156,共7页
Aiming at the integrative management and comprehensive applications of large-scale 3D geospatial information covering the full 3D space of a city, this paper briefly introduces the design and implementation of a full ... Aiming at the integrative management and comprehensive applications of large-scale 3D geospatial information covering the full 3D space of a city, this paper briefly introduces the design and implementation of a full 3D GIS platform: GeoScope, which provides a professional solution for the massive full three-dimensional geospatial data integration, management, analysis, visualization, and applications. GeoScope is characterized by: (1) extendible software architecture based on the hierarchical message bus, facilitates multimodal integrative applications of 2D GIS and 3D GIS; (2) unified 3D city models, support multiscale se- mantic representation of outdoor & indoor and aboveground & underground 3D objects; (3) high-efficient 3D geospatial database engine, supports integrated management of massive 3D geospatial data for real-time applications; and (4) high-performance visualization engine exploiting the massively parallel computation architecture of modem GPUs, supports real-time realistic rendering of large-scale complicated 3D geospatial environments. The successful pilot application of GeoScope is also illustrated with the 3D city models of 8494 knl2 of the whole Wuhan City, the largest city in middle China. 展开更多
关键词 3D geospatial information system 3D city models database engine visual analysis levels of detail semantic relationship
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