Synthetic index method and grey clustering method were adopted to assess the water quality of one reach of the caohe river 摘要采用综合指数法和灰色聚类法对漕河某河段的水环境进行水质评价。
The experimental results prove that the new method to extracting image features and clustering image has achieved good accuracy of the clustered - image 试验结果表明,本文的特征提取法和图像聚类法能获得较好的图像聚类精度。
The accuracy of the clustered - image is the primary problem in this change detection method , it is very important to find a robust image clustering method 该变化检测方法的检测结果精度主要取决于遥感图像聚类结果的精度,因此研究一种稳健的遥感图像聚类法具有重要意义。
Through some specific experiments , we analyse and compare the characters of some discretization methods such as hierarchical clustering analysis , recursive minimal entropy method , and one - rule 通过具体实验,分析和比较了层次聚类法、递归最小熵法和one - rule等离散化方法的性能特点。
Based on object - oriented technology and database technology , a faul t diagnosis system for rotary machines was designed , among which cbr is utilized for a main r easoning method 分析了案例推理的几个重要问题,包括案例的多级索引、用模糊聚类法精化案例库和模糊模式识别的案例相似性匹配。
The major improvements include : firstly , a modified subtractive clustering algorithm is put forward to generate a good initial clustering center matrix , which can improve the clustering performance of fcm 具体包括以下四个方面:第一,提出了改进的减法聚类法以产生具有代表性的初始聚类中心,提高了算法的稳定性和聚类性能。
Firstly , the initial values of cluster are obtained by hough transform , which consider the linearity and continuity , then the premise and consequent parameters are identified based on fuzzy c - means and recursive least square 首先利用hough变换的方法得到聚类中心的初始值,然后通过模糊c -均值聚类法辨识前提参数,采用递推最小二乘辨识模糊模型的结论参数。
The kernel of the software consists of 4 clustering algorithms including pair - wise average linkage analysis , hierarchical clustering , self - organization feature mapping , and fuzzy clustering which is first applied in the field 该软件包含了两两平均连锁聚类法、系统聚类法、自组织特征映射法和模糊聚类等聚类算法,其中模糊聚类算法是首次用于基因表达模式分析。
( 3 ) taking into account the fuzzy characteristics existed in selecting of the representative year , the fuzzy clustering method is adopted to the cluster analysis of year runoff data , and the cluster center vectors standing for the type of year , that is , abundant , moderate and deficient , are obtained ( 3 )考虑到典型年判定时存在的模糊性,将模糊聚类法用于年径流分析,由此求得分别代表丰、平、枯各种年型的聚类中心向量。