搜索结果: 1-7 共查到“机械工程 K-Means”相关记录7条 . 查询时间(0.234 秒)
基于簇内不平衡度量的粗糙means 聚类算法
簇内不平衡度量 粗糙集 粗糙 means 聚类
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2014/2/27
粗糙??-means 聚类算法是一种有效的处理聚类边界模糊问题的算法, 但大多数算法对簇的下近似集和边界中的对象使用统一的权值, 忽略了簇内对象之间的差异性. 针对这一问题提出一种新的改进算法, 通过对簇内的每个对象加入簇内不平衡度量, 以区分不同对象对簇的贡献程度, 使得聚类结果簇内更紧凑、簇间更疏远. 不同数据集的仿真实验结果表明, 所提出算法可以有效提高聚类结果的精度.
Learning Manifolds with K-Means and K-Flats
Learning Manifolds K-Means K-Flats
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2012/11/23
We study the problem of estimating a manifold from random samples. In particular, we consider piecewise constant and piecewise linear estimators induced by k-means and k-flats, and analyze their perfo...
Approximate Solutions of Primary Resonance for Forced Duffing Equation by Means of the Homotopy Analysis Method
homotopy analysis method(HAM) series solution
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2011/8/4
Nonlinear dynamic equation is a common engineering model. There is not precise analytical solution for most of nonlinear differential equations. These nonlinear differential equations should be solved...
Approximate Solutions of Primary Resonance for Forced Duffing Equation by Means of the Homotopy Analysis Method
homotopy analysis method(HAM) series solution forced Duffing equation
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2011/8/4
Nonlinear dynamic equation is a common engineering model. There is not precise analytical solution for most of nonlinear differential equations. These nonlinear differential equations should be solved...
Configuration Selection for Reconfigurable Manufacturing Systems by Means of Characteristic State Space
reconfigurable manufacturing system configuration selection
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2011/8/3
The configuration selection for reconfigurable manufacturing systems(RMS) have been tackled in a number of studies by using analytical or simulation models. The simulation models are usually based on ...
Repair of magnesium alloy castings by means of welding and pad welding
Metallic alloys Magnesium alloys Welding
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2010/2/22
Purpose: Attempts were carried out at pad welding and welding of castings made of alloy AZ91D. Technologies were developed to repair such castings by means of welding methods encompassing the choice o...
Prognosis of effects of remelting performed by means of plasma arc
Heat Treatment Remelting Arc Plasma Diagnostics
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2011/3/11
Selection of remelting parameter is performed mainly by trial and error method, which is time-consuming and expensive. The performed investigations are aimed to create the method for fast prognosis of...