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Site Quality Classification Models of Cunninghamia Lanceolata Plantations Using Rough Set and Random Forest West of Zhejiang Province, China
Cunninghamia lanceolata plantations site quality classification models site quality evaluation rough set random forest
2023/12/1
The site quality evaluation of plantations has consistently been the focus in matching tree species with sites. This paper studied the site quality of Chinese fir (Cunninghamia lanceolata) plantations...
基于差别信息树的rough set属性约简算法
差别矩阵 属性约简 差别信息树
2016/1/4
差别矩阵为粗糙集属性约简提供了很好的思路, 但差别矩阵中存在冗余的重复和父集元素. 为了消除这些冗余元素, 提出一棵有序树: 差别信息树, 该树能消除差别矩阵中的重复元素, 同时在大多数情况下也能完全消除父集元素, 实现对差别矩阵中非空元素的压缩存储. 为了验证差别信息树的有效性, 提出一种属性约简完备算法, 并使该算法的时间复杂度降为??(∣??∣∣??∣2).
THE APPLICATION RESEARCH OF KNOWLEDGE DISCOVERY TECHNIQUES BASED ON ROUGH SET IN DECISION SUPPORT
GIS Knowledge Spatial Rough set Decision support
2015/6/1
With the application and development of science and technology, the tremendous amount of spatial and nonspatial data have been stored in large spatial data bases. Analysing them for decision is badly ...
A Rough Set and GIS Based Approach for Selecting Suitable Shelters during an Evacuation Process
Rough Set Theory GIS Shelter Selection Evacuation Planning
2013/3/5
Humanity suffers an ever-present threat of crises. In the event of a crisis, the population in affected areas will be in danger and will need to be evacuated to a safer in order to protect their lives...
Comparison of Analytic Hierarchy Process and Dominance-Based Rough Set Approach as Multi-Criteria Decision Aid Methods for the Selection of Investment Projects
Analytic Hierarchy Process Dominance-Based Rough Set Approach Management Decision Support System Multi-Criteria Analysis
2013/2/19
This investigation compares two multi-criteria analysis methods, Analytic Hierarchy Process (AHP) and Dominance- based Rough Set Approach (DRSA), applied to the ranking of ten investment projects base...
基于AHP与Rough Set的农业节水技术综合评价
农业节水技术 综合评价 层次分析法 粗糙集
2012/3/16
由于不同区域自然条件的差异,农业节水技术自身特点及对应用环境条件的要求,导致不同农业节水技术的应用效果存在很大差异,有较大的不确定性,因此,如何筛选合理的评价指标,构建科学、全面的农业节水技术综合评价方法具有十分重要的意义。根据对农业节水技术应用效果的实地调研,应用Delphi法从调查获得的20项评价指标中筛选出了9项农业节水技术综合评价指标。其中节水率、积温和土壤肥力属于生态因子,产投比、劳动力...
Application of Rough Set Feature Selection in the Hazard Assessment of Debris Flow
Attribute Reduction Debris Flow Rough Sets Value Reduction
2011/12/21
In this thesis, the risk of debris flow have been studied. And it used feature selection based on rough set to construct debris flow hazard assessment model.The innovation of this thesis is:the on the...
基于粗糙集的烤烟烟叶智能分级方法（Intelligent Grading of Flue-cured Tobacco Leaves Based on Rough Set Theory）
烤烟烟叶 分级 化学指标
2009/8/11
针对烤烟烟叶的分级问题，提出了一种基于粗糙集理论的智能分级方法。为了适应烟叶分级的特点，将粗糙集理论予以扩展和改进，给出了相应的离散化和属性约简算法。同时构造了烟叶分组、分级的二级推理模型，以实现合理粒度的知识获取。通过烟叶的化学指标进行“部位”和“颜色”上的并行分组，可得到各自的推理规则以及影响指标和相应的重要度。在规则推理获得烟叶的分组后，借助所有化学指标的重要度进行多属性决策判定得到烟叶的分...
基于Rough Set的镜头分割方法
Rough Set 运动信息 突变
2009/6/24
综合利用了MPEG视频流P帧的运动特征、像素差和直方图差特征，提出了一种基于Rough Set的镜头分割方法。该方法首先提取视频流中P帧的宏块信息，然后分析得到其运动活力性、宏块类型和运动空间分布，再结合这些帧的像素差特征和直方图差特征，利用Rough Set对这些特征进行约减后，对镜头切换处进行识别。实验表明，该方法能有效地区分镜头的突变，对渐变也能很好地检测。
基于Rough Set理论的多源遥感图像处理软件系统
遥感 RoughSet理论 图像处理软件
2008/10/7
该项目根据Rough Set理论的特点与多源遥感图像处理技术的实际情况，以多源遥感图像数据处理为目的，对Rough Set的若干与多源遥感图像处理有关的应用模型和方法进行研究和探索，主要包括在遥感图像预处理、多尺度遥感数据集成、遥感图像分类和信息提取中的应用等，并最终建立完整的基于Rough set理论的多源遥感图像处理技术的应用模型与技术体系，为我国空间信息深层次处理与应用提供前期技术储备。
基于Rough set理论的IEC三比值诊断决策规则的研究
电力变压器诊断 粗糙集 决策表
2008/3/26
基于粗糙集理论提出一种改进的新导则 IEC 三比值 的变压器故障诊断决策新方法。文中从实际诊断中出发首次 将 IEC-60599 三比值故障诊断表编写成对应的逻辑编码表，然后应用粗糙集理论构造决策表并对决策表进行约简，最后建立改进的新导则 IEC-60599 三比值故障诊断决策规则。这 种改进的新导则 IEC-60599 三比值诊断方法使用简单，便于 操作。同时它还扩展了 IEC-60599 ...
Research on the CPA Audit Independence Risk Assessment Based on the Rough Set Theory
rough set theory audit independence risk assessment mode
2007/7/4
The assessment mode of the CPA audit independence risk based on the Rough Set Theory is a risk assessment method and using the Analytical Hierarchy Process, whose aim is to solve the bid management in...