Results 101 to 110 of about 77,553 (343)
Studying interspecific population synchrony: current status and future perspectives
Ecography, EarlyView.Interspecific population synchrony, or co‐fluctuations in the population dynamics and demographic parameters of different species, is an important ecological phenomenon with major implications for the stability of communities and ecosystems. It is also central in the context of biodiversity loss, as interspecific synchrony can influence how ecological ...
Ragnhild Bjørkås +3 more
wiley +1 more source
Avoiding the Curse of Dimensionality in Dynamic Stochastic Games [PDF]
Continuous-time stochastic games with a finite number of states have substantial computational and conceptual advantages over the more common discrete-time model.
Kenneth L. Judd, Ulrich Doraszelski
core +3 more sources
Varying Index Coefficient Model for Tail Index Regression
MathematicsInvestigating the causes of extreme events is crucial across various fields. However, existing asymptotic theoretical models often lack flexibility and fail to capture the complex dependency structures inherent in extreme events.
Hongyu An, Boping Tian
doaj +1 more source
Identification Environment, School Identification and School Burnout: Multilevel Models
European Journal of Social Psychology, EarlyView.ABSTRACT Most research on well‐being in social psychology has focused on individuals. Based on the social identity approach to health, we examined how the average strength of social identification within a group—a measure of the ‘identification environment’—affects group members’ burnout symptoms and moderates the association between their social ...
Eerika Finell +4 more
wiley +1 more source
Sensors, 2019 Hyperspectral Images (HSIs) contain enriched information due to the presence of various bands, which have gained attention for the past few decades. However, explosive growth in HSIs’ scale and dimensions causes “Curse of dimensionality„
Baokai Zu +6 more
doaj +1 more source
Solving, Estimating and Selecting Nonlinear Dynamic Models without the Curse of Dimensionality [PDF]
We present a comprehensive framework for Bayesian estimation of structural nonlinear dynamic economic models on sparse grids. TheSmolyak operator underlying the sparse grids approach frees global approximation from the curse of dimensionality and we ...
Markus Krätzig, Viktor Winschel
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Characterization of Multimodality in Wind Farm Layout Optimization
Energy Science &Engineering, EarlyView.ABSTRACT The phenomena of multiple optima in wind farm layout optimization (WFLO) problems is investigated. The choice of optimization algorithm and cost of solving WFLO problems is driven by the degree of local optimality in the design space; however little work has attempted to characterize this.
Daniel J. Poole
wiley +1 more source
Design of Predictive Controllers by Dynamic Programming and Neural Networks [PDF]
, 2003 This paper proposes a method for the design of predictive controllers for nonlinear systems. The method consists of two phases, a solution phase and a learning phase.
Nagurka, Mark L., Yen, Chen-Wen
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Energy Science &Engineering, EarlyView.Overview of the proposed work. ABSTRACT Identifying cyber threats maintains the security and operational stability of smart grid systems because they experience escalating attacks that endanger both operating data reliability and system stability and electricity grid performance.
Priya R. Karpaga +3 more
wiley +1 more source
Forecasting Value-at-Risk Using Block Structure Multivariate Stochastic Volatility Models [PDF]
Most multivariate variance or volatility models suffer from a common problem, the “curse of dimensionality”. For this reason, most are fitted under strong parametric restrictions that reduce the interpretation and flexibility of the models. Recently, the
Manabu Asai +2 more
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