Theorem 2. If we compare the expected value of DE reported in Equation (4) with the value of the estimator WE in Equation (3), we can notice strong similarities. The main difference is that in DE the sample mean of variable Xi and its probability of being the maximum are computed w.r.t. two independent set of samples, while in WE these two quantities are positively correlated. It follows that W...

This article is an extended abstract of a doctoral dissertation on chess evaluation function tuning with differential evolution (DE) algorithm. DE is adopted for efficient chess evaluation function tuning, extended with an opposition-based optimization and a new history mechanism. Experimental results show that the algorithm is efficient and can be applied to the chess evaluation function tunin...

We study special regularity and decay properties of solutions to the IVP associated to the k-generalized KdV equations. In particular, for datum u0 ∈H3/4 + (R) whose restriction belongs to H l((b,∞)) for some l ∈ Z+ and b ∈ R we prove that the restriction of the corresponding solution u(·, t) belongs to H l((β ,∞)) for any β ∈ R and any t ∈ (0,T ). Thus, this type of regularity propagates with ...

Article history: Received 3 March 2011 Received in revised form 15 November 2011 Accepted 7 January 2012 Available online xxxx

für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...

We present a stability result for a wide class doubly nonlinear equations, featuring general maximal monotone operators, and (possibly) nonconvex and nonsmooth energy functionals. The limit analysis resides on the reformulation of the differential evolution as a scalar energy-conservation equation with the aid of the so-called Fitzpatrick theory for the representation of monotone operators. In ...

In this paper we prove sufficient conditions for the existence of global solutions of nonlinear functional-differential evolution equations whose linear parts are infinitesimal generators of strongly continuous and analytic semigroups. We apply the obtained results to a diffusion problem. 2000 MSC: Primary: 47J35, 34K12, Secondary: 34K90, 35K20, 35K60

In many scientific fields, from biology to sociology, community detection in complex networks has become increasingly important. This paper, for the first time, introduces Cooperative Co-evolution framework for detecting communities in complex networks. A Bias Grouping scheme is proposed to dynamically decompose a complex network into smaller subnetworks to handle large-scale networks. We adopt...

There have been few efforts to investigate the concept of quality from learners’ perspectives or to incorporate their needs and perceptions in quality standards in distance education. This is rather surprising, particularly in distance education contexts where the quality of the learning is not derived only from the products and services delivered to the learner but also from the knowledge, und...