K-AP clustering algorithm for large scale dataset
- Authors: Liu, Chao , Hay, Rosemary , Wang, Wei
- Date: 2011
- Type: Text , Conference proceedings
- Full Text: false
- Description: Affinity propagation clustering algorithm is with a broad value in science and engineering because of it no need to input the number of clusters in advances, robustness and good generalization. But the algorithm needs the initial similarity (the distance between any two points) as a parameter, a lot of time and storage space is required for the calculation of similarity. It's limited to apply to cluster of the large amounts of data. To solve problem, this paper brings forward K-AP cluster algorithm which integrate k-means algorithm to AP algorithm to decrease time-consuming and space superiority. The results show the K-AP algorithm is faster than the original algorithm processing in speed, and it can cluster large amounts of data, and achieve better results. © 2011 IEEE.
Controllability and observability of switched linear systems with continuous-time and discrete-time subsystems
- Authors: Liu, Chao , Li, ChengYong , Li, Chaojie
- Date: 2012
- Type: Text , Journal article
- Relation: IET Control Theory and Applications Vol. 6, no. 6 (2012), p. 855-863
- Full Text: false
- Reviewed:
- Description: In this study, the authors focus on the controllability and observability of switched linear systems composed by continuous-time and discrete-time subsystems. Necessary and sufficient conditions for controllability and observability are obtained. A simple example is proposed to illustrate the effectiveness of the current theoretical results. © 2012 The Institution of Engineering and Technology.
- Description: 2003010568
Impulsive synchronization of state delayed discrete complex networks with switching topology
- Authors: Li, Chaojie , Gao, David , Liu, Chao
- Date: 2012
- Type: Text , Conference paper
- Relation: 19th International Conference on Neural Information Processing, ICONIP 2012 Vol. 7665 LNCS, p. 50-57
- Full Text:
- Reviewed:
- Description: In this paper, global exponential synchronization of a class of discrete delayed complex networks with switching topology is investigated by using Lyapunov-Ruzimiki method. The impulsive scheme is designed to work at the time instant of switching occurrence. A time-varying delay dependent criterion for impulsive synchronization is given to ensure the delayed discrete complex networks switching topology tending to a synchronous state. Furthermore, a numerical simulation is given to illustrate the effectiveness of main results. © 2012 Springer-Verlag.
- Description: 2003010652
Reachability and controllability of linear switched impulsive systems
- Authors: Liu, Chao , Han, Qi , Li, Chuandong , Zhang, Qun
- Date: 2013
- Type: Text , Journal article
- Relation: IET Control Theory and Applications Vol. 7, no. 9 (2013), p. 1294-1299
- Full Text: false
- Reviewed:
- Description: This study investigates the reachability and controllability of linear switched impulsive systems in which impulsive component is independent of switching among different subsystems. Some crucial geometrical criteria are established. The authors present the fact that the reachable sets and the controllable sets may not be subspaces, if impulsive matrices are singular. While impulsive matrices are reversible, the reachable and controllable subspaces can be determined by two proposed subspace algorithms. The authors also point out that the reachable or controllable subspace is an invariant subspace of the considered systems. Finally, two simple corresponding examples are discussed to illustrate the correctness and effectiveness of the proposed theoretical results. © The Institution of Engineering and Technology 2013.
- Description: C1
Impulsive control for synchronizing delayed discrete complex networks with switching topology
- Authors: Li, Chaojie , Gao, David , Liu, Chao , Chen, Guo
- Date: 2014
- Type: Text , Journal article
- Relation: Neural Computing and Applications Vol. 24, no. 1 (2014), p. 59-68
- Full Text: false
- Reviewed:
- Description: In this paper, global exponential synchronization of a class of discrete delayed complex networks with switching topology has been investigated by using Lyapunov-Ruzimiki method. The impulsive scheme is designed to work at the time instant of switching occurrence. A time-varying delay-dependent criterion for impulsive synchronization is given to ensure the delayed discrete complex networks switching topology tending to a synchronous state. Furthermore, a numerical simulation is given to illustrate the effectiveness of main results © 2013 The Author(s).