Mathematical Problems in Engineering
Volume 2010 (2010), Article ID 749517, 12 pages
doi:10.1155/2010/749517
Research Article

Dynamic Time Warping Distance Method for Similarity Test of Multipoint Ground Motion Field

Yingmin Li,1 Huiguo Chen,1,2 and Zheqian Wu1

1College of Civil Engineering, Chongqing University, Chongqing 400045, China
2Department of Architecture & Civil Engineering, Logistics Engineering College, Chongqing 401311, China

Received 1 January 2010; Revised 6 April 2010; Accepted 16 May 2010

Academic Editor: Carlo Cattani

Copyright © 2010 Yingmin Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The reasonability of artificial multi-point ground motions and the identification of abnormal records in seismic array observations, are two important issues in application and analysis of multi-point ground motion fields. Based on the dynamic time warping (DTW) distance method, this paper discusses the application of similarity measurement in the similarity analysis of simulated multi-point ground motions and the actual seismic array records. Analysis results show that the DTW distance method not only can quantitatively reflect the similarity of simulated ground motion field, but also offers advantages in clustering analysis and singularity recognition of actual multi-point ground motion field.