Name
Abstract | ||
|---|---|---|
A method to identify switching dynamics in time series, based on Annealed Competition of Experts algorithm (ACE), has been developed by Kohlmorgen et al. Incorrect selection of embedding dimension and time delay of the signal significantly affect the performance of the ACE method, however. In this paper, we utilize systematic approaches based on mutual information and false nearest neighbor to determine appropriate embedding dimension and time delay. Moreover, we obtained further improvements to the original ACE method by incorporating a deterministic annealing approach as well as phase space closeness measure. Using these improved implementations, we have enhanced the performance of the ACE algorithm in determining the location of the switching of dynamic modes in the time series. The application of the improved ACE method to heart rate data obtained from rats during control and administration of double autonomic blockade conditions indicate that the improved ACE algorithm is able to segment dynamic mode changes with pinpoint accuracy and that its performance is superior to the original ACE algorithm. |
Year | DOI | Venue |
|---|---|---|
2005 | 10.1109/TSMCB.2005.850174 | IEEE Transactions on Systems, Man, and Cybernetics, Part B |
Keywords | Field | DocType |
original ace algorithm,time delay,ace method,experts algorithm,dynamic mode,improved implementation,improved ace algorithm,improved ace method,original ace method,time series,ace algorithm,heart rate variability,mutual information,dynamics,nearest neighbor,phase space,physiology,expectation maximization,unsupervised learning,radial basis function | Radial basis function,Computer science,Phase space,Unsupervised learning,Artificial intelligence,k-nearest neighbors algorithm,Mathematical optimization,Embedding,Pattern recognition,Expectation–maximization algorithm,Segmentation,Mutual information,Machine learning | Journal |
Volume | Issue | ISSN |
35 | 5 | 1083-4419 |
Citations | PageRank | References |
9 | 0.55 | 9 |
Authors | ||
3 | ||