Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《ACTA ELECTRONICA SINICA》 2000-10
Add to Favorite Get Latest Update

Re-estimation of Continuous Hidden Markov Model with Multiple Observation without Overflow

HE Qiang 1,MAO Shi yi 1,ZHANG You wei 2 (1 Dept.of EE,Beijing University of Aeronautics and Astronautics,Beijing 100083,China 2 Research Institute of Information Science,Wuyi University,Jiangmen 529020,China)  
In the training phase of HMM system,due to the cumulative production,the evaluation of the forward and backward probabilities in Baum Welch algorithm needs a large dynamic range which will exceed the precision range of essentially any machine.This can be resolved by multiplying the forward and backward probability with scaling coefficients in single observation case.In multiple observation case,generally the output probability terms are introduced for each observation,which will cause the overflow problem again.In this paper,the cause of overflow problem is studied and a revised BW algorithm specially for multiple observation is deduced by redefining the optimization object function from cumulative production to sum of logarithms.The revised HMM parameter re estimating algorithm is more stable and effective,and the overflow problem is eliminated.
【Fund】: 广东省自然科学基金!(No.960 631 )
【CateGory Index】: TN912
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
【References】
Chinese Journal Full-text Database 9 Hits
1 FENG Chang-jian KANG Jing WU Bin HU Hong-ying(College of Electromechanical & Information Engineering,Dalian Nationalities University,Dalian Liaoning,116605,China);Application in Fault Diagnosis of Rotary Machine Based on Theory Of DHMM Dynamic Pattern Recognition[J];Journal of Dalian Nationalities University;2006-03
2 ZHANG Feng(School of EE,North China Electric Power University,Beijing 102206,China);PLC Channel Noise Modeling based on Markov Chain[J];Telecommunications for Electric Power System;2010-09
3 Kang Jing1,Feng Changjian1,Yang Guotian2(1 Dalian Nationalities University,Dalian 116600;2 North China Electric Power University,Beijing 102206);Application of DHMM Pattern Recognition Theory to Chatter Prediction[J];Mechanical Science and Technology for Aerospace Engineering;2008-03
4 Shao Qiang1,2,Feng Changjian2,Guan Lina2,Shao Cheng1 (1Institute of Advanced Control Technology,Dalian University of Technology,Dalian 116024;2 School of Electromechanical and Information Engineering,Dalian Nationalities University,Dalian 116600);Faults Diagnosis of the Running-up Process of a Rotary Machine Based on HMM with Mixture Probability Densities[J];Mechanical Science and Technology for Aerospace Engineering;2009-11
5 TANG Jing-Hai~1 ZHANG You-Wei~(1,2)~1(School of Electronics and Information Engineering,Beihang University,Beijing 100083)~2(School of Information,Wuyi University,Jiangmen 529020);An HMM Based Normality Processing Method without Overflow for High Dimensional Sample Set[J];Pattern Recognition and Artificial Intelligence;2008-03
6 DU Shi-ping (Department of Mathematics,Sichuan Agricultural University,Yaan Sichuan 625014 China);The Baum-Welch Algorithm of HMM2 with Multiple Observations[J];Journal of Biomathematics;2007-04
7 WU Shuang,YANG Hai-cheng,CHANG Zhi-yong,MO Rong(Ministry of Education Key Lab of Contemporary Designing & Integrated Manufacturing Technology,Northwestern Polytechnic University,Xi'an 710072,China);Research on Fault Recognition of Aero-engine base on Discrete Hidden Markov Model[J];Microprocessors;2011-01
8 LI Jinbo, JIANG Zhigang,YUE Xia;Research on State Monitoring and Fault Diagnosis Technology of the Nuclear Power Equipment Coolant Pump based on CGHMM[J];Modern Machinery;2010-01
9 Kang Jing Feng Changjian Hu Hongying(Department of Machine,Dalian Nationalities University Dalian,116600,China);Tool Wear Monitoring and Pattern Recognition of Tool Failure[J];Journal of Vibration, Measurement & Diagnosis;2009-01
【Co-references】
Chinese Journal Full-text Database 10 Hits
1 ;The Analysis and Research of EMC Testing for the Aircraft Power Supply Products[J];Safety & Emc;2004-01
2 LI Meng dong,RUAN Qui qi (College of Computer and Information Technology, Northern Jiaotong University, Beijing 100044,China);An Algorithm of Extracting Mouth Features from Image Using Deformable Templates[J];Journal of Northern Jiaotong University;2002-02
3 Li Shengjin Lu Gang Ma Ruiqing (Northwestern Polytechnical University,Xi'an 710072);Research on Integral Starter/Generator for Engine Application[J];;1999-02
4 LIU Xin-min, WEN Xi-sen, QIU Jing, LIU Guan-jun(College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha, Hunan 410073, China);False Alarm Filter of Mechatronics Built-in Test Based on the Hidden Markov Model[J];Acta Armamentarii;2005-03
5 FENG Chenglin\ WU Shuzhen (Department of Electronics, Peking University, Beijing ,100871);A Study on Noisy Speech Recognition (Linear Predictive Coding Prediction Error)[J];ACTA SCICENTIARUM NATURALUM UNIVERSITIS PEKINESIS;2000-05
6 WU Shuzhen(Department of Electronics,Peking University,Beijing,100871) CHENG\ Qiansheng(School of Mathematical Sciences,Peking University,Beijing,100871);A Study on Speech Recognition for Isolate Words[J];Acta Scicentiarum Naturalum Universitis Pekinesis;2001-01
7 WU Shuzhen FENG Chenglin HUANG Xinyu (Department of Electronics,Peking University,Beijing\ 100871);Study on Noisy Speech Recognition Methods[J];Acta Scicentiarum Naturalum Universitis Pekinesis;2001-03
8 ZHEN Bin\ WU Xihong\ LIU Zhimin\ CHI Huisheng (Center for Information Science,Peking University,Beijing,100871);On the Importance of Components of the MFCC in Speech and Speaker Recognition[J];Acta Scicentiarum Naturalum Universitis Pekinesis;2001-03
9 Fei Renyuan, Wang Min, Guan Jian (Collegs of Mechanical Engineering and Applied Electronic Technology, Beijing Polytechnic University, Beijing 100022) Abudureyimu, Zhu Zhijian, Botiguli (Department of Mechanical Engineering, Xinjiang Institute of Technolo;Structure of Fuzzy Neaural Network in Manufacturing System Monitoring and Its Application[J];Journal of Beijing Polytechnic University;2000-04
10 HE Qiang MAO Shi yi (Beijing University of Aeronautics and Astronautics, Dept. of Electronic Engineering) ZHANG You wei (Wuyi University, Research Institute of Information Science);Smoothed-unit HMM Algorithm in Mandarin Speech Recognition[J];Journal of Beijing University of Aeronautics and Astronautics;2001-02
China Proceedings of conference Full-text Database 1 Hits
1 Rong Hui Gong Jinfeng Cao Jian (China Automotive Technology & Research Center, Tianjin, 300162, China);Road Condition Perception and Forward Collision Warning System for Road Vehicle[A];[C];2008
【Secondary References】
Chinese Journal Full-text Database 10 Hits
1 LIN Chun-li1,2,QI Xin3,WANG Ke-cheng3(1.College of Automation,Harbin Engineering University,Harbin 150001,China;2.School of Higher Vocational Education,University of Science and Technology Liaoning,Anshan 114051,China;3.School of Electric and Information Engineering,University of Science and Technology Liaoning,Anshan 114051,China);Application of SVM-KNN classifier on abnormal behavior detection[J];Journal of University of Science and Technology Liaoning;2010-05
2 Nie PengChen Xin (School of Mechanical Engineering,Shenyang University of Aeronautics and Aviation,Shenyang 110136,China);Prediction of tool VB value based on PCA and BP neural network[J];Journal of Beijing University of Aeronautics and Astronautics;2011-03
3 SHAO Qiang1,2,WANG Lu2,KANG Jing2,SHAO Cheng1 (1.Institute of Advanced Control Technology,Dalian University of Technology,Dalian Liaoning 116023,China;2.College of Electromechanical & Information Engineering,Dalian Nationalities University,Dalian Liaoning 116605,China);Cutting Chatter Prediction based on PCA—SVM Pattern[J];Journal of Dalian Nationalities University;2009-03
4 LI Yijia,ZHAO Chun(Beijing university of technology Embedded software and system institute,Beijing 100124);An Endpoint Detection of Complex Environment Base on Embedded System[J];Computer Programming Skills & Maintenance;2008-17
5 WEN Xi-shan1,2,LAN Lei2,JIANG Ri-kun2 (1.State Key Laboratory of Power Transmission Equipment & System Security and New Technology,Chongqing University,Chongqing 400030,China;2.School of Electrical Engineering,Wuhan University,Wuhan 430072,China);Operating Risk Assessment for Transmission and Line Insulators Using Markov Model[J];High Voltage Engineering;2011-08
6 Li Yunhua;A New Method of Chinese Endpoint Detection[J];Ship Electronic Engineering;2008-02
7 LUO Bang-Jie(Calibration and Testing Center of the Quality and Technology Supervision of Yuhuan,Yuhuan Zhejiang 317600,China);The Current Situation and Development of Fault Diagnosis about Rotating Machine[J];Development & Innovation of Machinery & Electrical Products;2008-03
8 HUI A-li,LIN Hui Northwest Polytechnical University,Xi’an 710072,China;FIS for analyzing flashover data of contaminated insulators[J];Computer Engineering and Applications;2007-35
9 YAO Yan-hong,SONG Gang School of Information Science and Engineering,Shandong University,Ji’nan 250100,China;Endpoint detection of noisy Chinese speech based on EVRC[J];Computer Engineering and Applications;2007-35
10 YIN Yong1,ZHANG Jing1,WANG Jiandong2 1.College of Communication Engineering, Chongqing University, Chongqing 400044, China 2.School of Science, Dalian Ocean University, Dalian, Liaoning 116023, China;Human activity recognition based on improved Radon transforms[J];Computer Engineering and Applications;2012-11
China Proceedings of conference Full-text Database 1 Hits
1 Zhu Yi Chen Jin (Shanghai Jiaotong university,State key laboratory of mechanical system and vibration,Shanghai,200240);RESEARCH ON HMM-BASED EQUIPMENT PERFORMANCE DEGRADATION ASSESSMENT[A];[C];2008
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved