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一个多维次成分并行提取算法及其收敛性分析
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作者 董海迪 何兵 +1 位作者 刘刚 郑建飞 《自动化学报》 EI CSCD 北大核心 2019年第2期427-433,共7页
次成分分析是信号处理领域内一项重要的分析工具.目前,多维次成分并行提取算法数量稀少,而且现有的算法在应用时还存在很多限制条件.针对上述问题,在分析研究OJAm次子空间跟踪算法的基础上,采用加权矩阵法提出了一种多维次成分提取算法... 次成分分析是信号处理领域内一项重要的分析工具.目前,多维次成分并行提取算法数量稀少,而且现有的算法在应用时还存在很多限制条件.针对上述问题,在分析研究OJAm次子空间跟踪算法的基础上,采用加权矩阵法提出了一种多维次成分提取算法,并采用递归最小二乘法对所提算法进行了简化,最后采用李雅普诺夫函数法确定了所提算法的全局收敛域.相比现有算法,所提算法对信号的特征值大小没有要求,也不需要在迭代过程中进行模值归一化操作,同时算法具有较低的计算复杂度.仿真实验表明:所提算法能够并行提取多维次成分,而且收敛速度要优于现有同类型算法. 展开更多
关键词 多维次成分 递归最小二乘 OJAm算法 李雅普诺夫函数
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Maintenance Decision Making Model with Multiple Attribute Optimization
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作者 蔡志强 李洋 +1 位作者 张帅 周文宝 《Journal of Shanghai Jiaotong university(Science)》 EI 2016年第4期499-503,共5页
An effective maintenance schedule can largely improve productivity and reduce maintenance costs for enterprises. Many factors, such as resource, production, cost and crew, should be considered when we make maintenance... An effective maintenance schedule can largely improve productivity and reduce maintenance costs for enterprises. Many factors, such as resource, production, cost and crew, should be considered when we make maintenance plans. However, it is difficult to meet all requests of the production targets in practical engineering.The multiple attribute decision making for equipment maintenance is proposed in this paper, and the multiple objectives decision making method is utilized to solve the problem in the maintenance process. In the particular environment and resources, a case is studied to illustrate the model and methods. The model gives the optimal maintenance plan with the analytic hierarchy process method in accordance with the particular criteria. It has been proved that this model and decision methods are scientific and operable. 展开更多
关键词 MODEL maintenance decision making multiple attribute WEIGHT
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