Locality preserving projection (LPP) is a newly emerging fault detection method which can discover local manifold structure of a data set to be analyzed, but its linear assumption may lead to monitoring performance de...Locality preserving projection (LPP) is a newly emerging fault detection method which can discover local manifold structure of a data set to be analyzed, but its linear assumption may lead to monitoring performance degradation for complicated nonlinear industrial processes. In this paper, an improved LPP method, referred to as sparse kernel locality preserving projection (SKLPP) is proposed for nonlinear process fault detection. Based on the LPP model, kernel trick is applied to construct nonlinear kernel model. Furthermore, for reducing the computational complexity of kernel model, feature samples selection technique is adopted to make the kernel LPP model sparse. Lastly, two monitoring statistics of SKLPP model are built to detect process faults. Simulations on a continuous stirred tank reactor (CSTR) system show that SKLPP is more effective than LPP in terms of fault detection performance.展开更多
电竞最令人激动之处莫过于比赛现场和直播屏幕前大家对于精彩操作和喜爱队伍的获胜而欢呼,这一次享受观众欢呼的OMG的《绝地求生》战队。在PGI（PUBG Global Invitational,柏林《绝地求生》全球邀请赛,被称为首届《绝地求生》世界杯）的...电竞最令人激动之处莫过于比赛现场和直播屏幕前大家对于精彩操作和喜爱队伍的获胜而欢呼,这一次享受观众欢呼的OMG的《绝地求生》战队。在PGI（PUBG Global Invitational,柏林《绝地求生》全球邀请赛,被称为首届《绝地求生》世界杯）的FPP模式中,来自中国的OMG战队取得冠军,8局比赛吃鸡3次,OMG.lionkk同时荣膺击杀王和存活王。展开更多
基金Supported by the National Natural Science Foundation of China （61273160）, the Natural Science Foundation of Shandong Province of China （ZR2011FM014） and the Fundamental Research Funds for the Central Universities （10CX04046A）.
文摘Locality preserving projection (LPP) is a newly emerging fault detection method which can discover local manifold structure of a data set to be analyzed, but its linear assumption may lead to monitoring performance degradation for complicated nonlinear industrial processes. In this paper, an improved LPP method, referred to as sparse kernel locality preserving projection (SKLPP) is proposed for nonlinear process fault detection. Based on the LPP model, kernel trick is applied to construct nonlinear kernel model. Furthermore, for reducing the computational complexity of kernel model, feature samples selection technique is adopted to make the kernel LPP model sparse. Lastly, two monitoring statistics of SKLPP model are built to detect process faults. Simulations on a continuous stirred tank reactor (CSTR) system show that SKLPP is more effective than LPP in terms of fault detection performance.
文摘电竞最令人激动之处莫过于比赛现场和直播屏幕前大家对于精彩操作和喜爱队伍的获胜而欢呼,这一次享受观众欢呼的OMG的《绝地求生》战队。在PGI（PUBG Global Invitational,柏林《绝地求生》全球邀请赛,被称为首届《绝地求生》世界杯）的FPP模式中,来自中国的OMG战队取得冠军,8局比赛吃鸡3次,OMG.lionkk同时荣膺击杀王和存活王。
