A Support Vector Machine Model for Pipe Crack Size Classification: Reseach on SVM Classification - Couverture souple

Miao, Chuxiong; Zuo, Ming

Couverture souple

ISBN 10 : 363929405X ISBN 13 : 9783639294057

Editeur : VDM Verlag, 2010

Synopsis

The classification of pipe crack size from its pulse- echo ultrasonic signal is a difficult task but greatly significant for defect evaluation in pipe testing and the maintenance strategy making. In this book, we use Support Vector Machines (SVM) to classify the pipe crack into correct categories, large size or small size, with the ultrasonic signal data. In order to acquire an optimal input data set, we first select the features from the time and frequency domain on the ultrasonic data. Then a combined method, Sequential Backward Selection (SBS) and Sequential Forward Selection (SFS), is used for features reduction. These two steps are referred as data preprocessing in this book. To build SVM classifier, parameter selection is critical. In this book, a Kernel Fisher Discriminant Ratio (KFD Ratio) is proposed for speeding the parameter selection of the SVM classifier. As an indicator, KFD Ratio can greatly shorten computation time for finding the best parameters. To further improve the performance of the SVM classifier in terms of classification accuracy, a data dependent kernel is adopted for creating a more effective one.

A propos du livre

À propos des auteurs

Chuxiong Miao, M.Sc Professional Engineer in Canada

Chuxiong Miao, M.Sc Professional Engineer in Canada

Détails de l'édition

• Éditeur: VDM Verlag
• Date d'édition: 2010
• Langue: anglais
• ISBN 10: 363929405X
• ISBN 13: 9783639294057
• Reliure: Broché
• Nombre de pages: 96
• Coordonnées du fabricant: non disponible
• Personne responsable: non disponible