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Featured researches published by xiang Li.


Chaos | 2016

The effect of randomness for dependency map on the robustness of interdependent lattices

Jing Yuan; Lixiang Li; Haipeng Peng; Jürgen Kurths; Jinghua Xiao; Yixian Yang

The percolation for interdependent networks with identical dependency map follows a second-order phase transition which is exactly the same with percolation on a single network, while percolation for random dependency follows a first-order phase transition. In real networks, the dependency relations between networks are neither identical nor completely random. Thus in this paper, we study the influence of randomness for dependency maps on the robustness of interdependent lattice networks. We introduce approximate entropy(ApEn) as the measure of randomness of the dependency maps. We find that there is critical ApEnc below which the percolation is continuous, but for larger ApEn, it is a first-order transition. With the increment of ApEn, the pc increases until ApEn reaching ApEnc′ and then remains almost constant. The time scale of the system shows rich properties as ApEn increases. Our results uncover that randomness is one of the important factors that lead to cascading failures of spatially interdependent networks.


Neurocomputing | 2018

Incremental general non-negative matrix factorization without dimension matching constraints

Zigang Chen; Lixiang Li; Haipeng Peng; Yuhong Liu; Yixian Yang

Abstract In this paper, we propose a General Non-negative Matrix Factorization based on the left Semi-Tensor Product (lGNMF) and the General Non-negative Matrix Factorization based on the right Semi-Tensor Product (rGNMF), which factorize an input non-negative matrix into two non-negative matrices of lower ranks based on gradient method. In particular, the proposed models are able to remove the dimension matching constraints required by conventional NMF models. Both theoretical derivation and experimental results show that the conventional NMF is a special case of the proposed lGNMF and rGNMF. We find the method for the best efficacy of the image restoration in lGNMF and rGNMF by experiments on baboon and lenna images. Moreover, inspired by the Incremental Non-negative Matrix Factorization (INMF), we propose the Incremental lGNMF (IlGNMF) and Incremental rGNMF (IrGNMF), We also conduct the experiments on JAFFE database and ORL database, and find that IlGNMF and IrGNMF realize saving storage space and reducing computation time in incremental facial training.


international conference on swarm intelligence | 2013

Improving Chaotic Ant Swarm Performance with Three Strategies

Yu-Ying Li; Lixiang Li; Haipeng Peng

This paper presents an improved chaotic ant swarm (ICAS) by introducing three strategies, which are comprehensive learning strategy, search bound strategy and refinement search strategy, into chaotic ant swarm (CAS) for solving optimization problems. The first two strategies are employed to update ants’ positions, which preserve the diversity of the swarm so that the ICAS discourages premature convergence. In addition, the refinement search strategy is adopted to increase the solution quality in the ICAS. Simulations show that the ICAS significantly enhances solution accuracy and convergence stability of the CAS.


Chaos Solitons & Fractals | 2006

Parameters identification of chaotic systems via chaotic ant swarm

Lixiang Li; Yixian Yang; Haipeng Peng; Xiangdong Wang


Chaos Solitons & Fractals | 2009

CAS ALGORITHM-BASED OPTIMUM DESIGN OF PID CONTROLLER IN AVR SYSTEM

Hui Zhu; Lixiang Li; Ying Zhao; Yu Guo; Yixian Yang


Chaos Solitons & Fractals | 2009

Hybrid chaotic ant swarm optimization

Yu-Ying Li; Qiao-Yan Wen; Lixiang Li; Haipeng Peng


Physica A-statistical Mechanics and Its Applications | 2011

A local-world heterogeneous model of wireless sensor networks with node and link diversity

Shudong Li; Lixiang Li; Yixian Yang


Physics Letters A | 2004

Comment on two papers of chaotic synchronization

Lixiang Li; Haipeng Peng; Xiangdong Wang; Yixian Yang


Chaos Solitons & Fractals | 2007

WITHDRAWN: Parameter estimation of time-delay chaotic system

Haipeng Peng; Lixiang Li; Yixian Yang; Xiaohong Zhang


Physica A-statistical Mechanics and Its Applications | 2018

Promotion of cooperation induced by two-sided players in prisoner’s dilemma game

Zhen Su; Lixiang Li; Jinghua Xiao; Boris Podobnik; H. Eugene Stanley

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Haipeng Peng

Beijing University of Posts and Telecommunications

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Yixian Yang

Beijing University of Posts and Telecommunications

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Zigang Chen

Beijing University of Posts and Telecommunications

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Yuhong Liu

Santa Clara University

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Jinghua Xiao

Beijing University of Posts and Telecommunications

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Xiangdong Wang

Shenyang University of Technology

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Yu-Ying Li

Beijing University of Posts and Telecommunications

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Hui Zhu

Beijing University of Posts and Telecommunications

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Jing Yuan

Beijing University of Posts and Telecommunications

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Qiao-Yan Wen

Beijing University of Posts and Telecommunications

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