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CORR
2010
Springer
163views Education» more  CORR 2010»
13 years 5 months ago
NP-hardness of Deciding Convexity of Quartic Polynomials and Related Problems
We show that unless P=NP, there exists no polynomial time (or even pseudo-polynomial time) algorithm that can decide whether a multivariate polynomial of degree four (or higher ev...
Amir Ali Ahmadi, Alexander Olshevsky, Pablo A. Par...
IFSA
2007
Springer
158views Fuzzy Logic» more  IFSA 2007»
14 years 2 months ago
Fuzziness and Performance: An Empirical Study with Linguistic Decision Trees
Abstract. Generally, there are two main streams of theories for studying uncertainties. One is probability theory and the other is fuzzy set theory. One of the basic ideas of fuzzy...
Zengchang Qin, Jonathan Lawry
CDC
2008
IEEE
228views Control Systems» more  CDC 2008»
14 years 3 months ago
Stability analysis for neural networks with time-varying delay
— This paper studies the problem of stability analysis for neural networks (NNs) with a time-varying delay. The activation functions are assumed to be neither monotonic, nor diff...
Xun-Lin Zhu, Guang-Hong Yang
WEBI
2009
Springer
14 years 3 months ago
Measuring Inconsistency in DL-Lite Ontologies
Abstract—Measuring Inconsistency in ontologies is an important topic in ontology engineering as it can provide extra information for dealing with inconsistency. Many approaches h...
Liping Zhou, Houkuan Huang, Guilin Qi, Yue Ma, Zhi...
COMPLEX
2009
Springer
14 years 3 months ago
Phase Transition of Active Rotators in Complex Networks
Abstract. We study the nonequilibrium phenomena of a coupled active rotator model in complex networks. From a numerical Langevin simulation, we find the peculiar phase transition ...
Seung-Woo Son, Hawoong Jeong, Hyunsuk Hong