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采油工程中灰色预测模型的病态性诊断 被引量:3
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作者 徐永高 《武汉理工大学学报(交通科学与工程版)》 北大核心 2004年第5期702-705,共4页
依据条件数法和特征分析法对采油工程中的灰色模型的病态性进行了分析,指出了两者在判定模型病态性方面的优劣,并根据最小二乘解析式分析了数乘变换对灰色模型参数的影响,文中还就Gershgorin定理分析了灰色模型病态的缘由。
关键词 灰色模型 病态性诊断 采油工程 条件数法 最小二乘解析 Gershgorin定理
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ONLINE PARSIMONIOUS LEAST SQUARES SUPPORT VECTOR REGRESSION AND ITS APPLICATION 被引量:2
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作者 赵永平 孙健国 王健康 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2009年第4期280-287,共8页
A simple and effective mechanism is proposed to realize the parsimoniousness of the online least squares support vector regression (LS-SVR), and the approach is called the OPLS-SVR for short. Hence, the response tim... A simple and effective mechanism is proposed to realize the parsimoniousness of the online least squares support vector regression (LS-SVR), and the approach is called the OPLS-SVR for short. Hence, the response time is curtailed. Besides, an OPLS-SVR based analytical redundancy technique is presented to cope with the sensor failure and drift problems to guarantee that the provided signals for the aeroengine controller are correct and acceptable. Experiments on the sensor failure and drift show the effectiveness and the validity of the proposed analytical redundancy. 展开更多
关键词 support vector machines SENSORS least squares analytical redundancy aeroengines
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