Results 61 to 70 of about 89,782 (266)
Perturbed Copula: Introducing the skew effect in the co-dependence [PDF]
, 2012 Gaussian copulas are widely used in the industry to correlate two random variables when there is no prior knowledge about the co-dependence between them.
Elices, Alberto, Fouque, Jean-Pierre
core
Managers' Sustainability Mindset: The Role of Place Attachment and Absorptive Capacity
Corporate Social Responsibility and Environmental Management, EarlyView.ABSTRACT Sustainability mindset among managers is crucial for advancing sustainable development and creating long‐term environmental and social value. This study focuses on middle managers in Indian organizations and explores how place attachment and managerial absorptive capacity affect their sustainability mindset.
Asha K. S. Nair +2 more
wiley +1 more source
Rockburst prediction based on data preprocessing and hyperband‐RNN‐DNN
Deep Underground Science and Engineering, EarlyView.A data preprocessing workflow is proposed to address challenges in rockburst data analysis. Coupled algorithms preprocess the data set, and hyperband optimization is used to enhance RNN performance. Results show that preprocessing improves accuracy, while dense layers enhance model stability and prediction performance.
Yong Fan +4 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2013 利用Copula-GARCH模型，研究上证地产股指数和金融股指数收益率的相关性.利用边缘函数推断法(IFM)建立2个股指对数收益率的时间序列的GARCH(1，1)-t模型.对边缘分布概率积分变化后的2个服从均匀分布的序列，分别建立常相关的二元Copula模型，包括正态Copula函数、Clayton Copula函数、Gumbel Copula函数、t-Copula函数、SJC-Copula函数和时变相关的二元Copula模型 ...
LIUGui-mei(刘桂梅), ZHAOLi(赵丽)
doaj +1 more source
Flexible methods for species distribution modeling with small samples
Ecography, EarlyView.Species distribution models (SDMs) predict where species live or could potentially live and are a key resource for ecological research and conservation decision‐making. However, current SDM methods often perform poorly for rare or inadequately sampled species, which include most species on earth, as well as most of those of the greatest conservation ...
Brian S. Maitner +4 more
wiley +1 more source
Waves of Uncertainty: Crude Oil Under Geopolitical, Economic, and ESG Turbulence
Energy Science &Engineering, EarlyView.Dynamic copula and wavelet coherence reveal that geopolitical, economic, and sustainability uncertainties significantly shape crude oil price co‐movements. Long‐term coherence, especially post‐2015, highlights the growing role of ESG risks alongside geopolitical shocks and economic crises in global energy risk transmission.
Sana Braiek +3 more
wiley +1 more source
Two Copulas associated with extremum(与极值相关的两类Copula)
Zhejiang Daxue xuebao. Lixue ban, 2008 利用阿基米德Copula，生存阿基米德Copula，对随机变量与极值统计量之间的相依关系进行了初步的探讨，构造了两类Copula.并在此基础上提出了一种生成Copula的方法.这种方法将特殊Copula函数结构应用到逆方法之中，为生成具有特殊性质的相依结构提供了平台.
WANGQin(王沁) +2 more
doaj +1 more source
AIMS Geosciences, 2020 Water resources operational planning, managements or either flood defence infrastructure designs often demand the estimations of flow exceedance probability for visualizing the risk of flood episodes.
Shahid Latif, Firuza Mustafa
doaj +1 more source
, 2014 In this article, we consider the problem of reconstructing networks for continuous, binary, count and discrete ordinal variables by estimating sparse precision matrix in Gaussian copula graphical models.
Abegaz, Fentaw, Wit, Ernst
core +1 more source
Energy Science &Engineering, EarlyView.Overview of the under‐study hub energy model showing the energy conversion and distribution among integrated sources and loads. ABSTRACT In this paper, a probabilistic bi‐objective energy management system (EMS) model is proposed for an energy hub (EH) equipped with renewable energy sources such as photovoltaic and wind turbine connected to the main ...
Mohammad Khoshabi +3 more
wiley +1 more source