Results 91 to 100 of about 2,059 (191)

MODELLING RANDOM COUPLES USING COPULAS MODELADO DE PAREJAS ALEATORIAS USANDO CÓPULAS

Revista Colombiana de Estadística, 2009
Copulas have become a useful tool for the multivariate modelling in both stochastics and statistics. In this article, fundamental properties that allow the characterization of the dependence structure of families of the bivariate distributions defined by
Escarela Gabriel, Hernández Angélica
doaj  

Alleviating small sample problem in continuous forest monitoring with remote sensing-assisted Copulas

Ecological Indicators
With model-assisted (MA) estimation, remote sensing (RS) has provided auxiliary modeling data to enhance precision in estimators of forest parameters for continuous forest monitoring as mandated by various official reporting instruments.
Xinjie Cheng, Zhengyang Hou, Annika Kangas, Jean-Pierre Renaud, Hao Tang, Weisheng Zeng, Qing Xu   +6 more
doaj   +1 more source

The Effect of Board Leadership Roles and Committee Responsibilities on Governance Effectiveness

Journal of Management Studies, EarlyView.
Abstract Expectations for corporate directors have expanded over time, placing growing demands on their time and attention. Drawing on the cognitive foundations of the attention‐based view (ABV), we theorize that board directors' leadership roles and committee assignments shape their attentional perspective and engagement in ways that can both hinder ...
Shelby L. Gai, J. Yo‐Jud Cheng
wiley   +1 more source

Modelado de parejas aleatorias usando cópulas Modelling Random Couples Using Copulas

Revista Colombiana de Estadística, 2009
Las cópulas se han convertido en una herramienta útil para el modelado multivariado tanto estocástico como estadístico. En este artículo se revisan propiedades fundamentales de las cópulas que permitan caracterizar la estructura de dependencia de ...
GABRIEL ESCARELA, ANGÉLICA HERNÁNDEZ
doaj  

The Great Temporal Divide: How Top Management Team Temporal Faultlines and Dominant Subgroups Shape Firm Innovativeness in Iran

Journal of Management Studies, EarlyView.
Abstract While executives vary in attention to the past, present, and future, prior work has largely examined these temporal orientations in isolation or at the individual level, which limits insight into how they jointly configure within top management teams (TMTs) and translate into firm behaviours.
Shi Tang, Sherry M. B. Thatcher, Andreas W. Richter, Stephen X. Zhang, Asghar Afshar Jahanshahi   +4 more
wiley   +1 more source

A joint model of cost and churn for the insurance industry

Journal of Risk and Insurance, EarlyView.
Abstract In insurance markets, claim costs are highly variable, heavy‐tailed, and difficult to predict. At the same time, policyholder retention and lapse behavior (customer churn) are critical determinants of long‐term profitability and solvency. Most existing models in the literature treat claim costs and lapses as independent, overlooking potential ...
Yumo Dong, Edward W. (Jed) Frees, Fei Huang, Francis K. C. Hui, Harald J. van Heerde   +4 more
wiley   +1 more source

A Conditional Tail Expectation Type Risk Measure for Time Series

Journal of Time Series Analysis, EarlyView.
ABSTRACT We consider the estimation of the conditional expectation 𝔼(Xh|X0>UX(1/p)), provided 𝔼|X0|<∞, at extreme levels, where (Xt)t∈ℤ$$ {\left({X}_t\right)}_{t\in \mathbb{Z}} $$ is a strictly stationary time series, UX$$ {U}_X $$ its tail quantile function, h$$ h $$ is a positive integer and p∈(0,1)$$ p\in \left(0,1\right) $$ is such that p→0$$ p\to ...
Yuri Goegebeur, Armelle Guillou, Jing Qin   +2 more
wiley   +1 more source

Robust CDF‐Filtering of a Location Parameter

Journal of Time Series Analysis, EarlyView.
ABSTRACT This paper introduces a novel framework for designing robust filters associated with signal plus noise models having symmetric observation density. The filters are obtained by a recursion where the innovation term is a transform of the cumulative distribution function of the residuals.
Leopoldo Catania, Andrew C. Harvey, Alessandra Luati   +2 more
wiley   +1 more source

On Testing for Independence Between Generalized Error Models of Several Time Series

Journal of Time Series Analysis, EarlyView.
ABSTRACT We define generalized innovations associated with generalized error models having arbitrary distributions, that is, distributions that can be mixtures of continuous and discrete distributions. These models include stochastic volatility models and regime‐switching models with possibly zero‐inflated regimes.
Kilani Ghoudi, Bouchra R. Nasri, Bruno N. Rémillard   +2 more
wiley   +1 more source

Assessing the Effectiveness of Workers' Selection Exams: The Case of the Bank of Italy

Oxford Bulletin of Economics and Statistics, EarlyView.
ABSTRACT High‐stakes exams can be used to rank and select candidates for job openings, and the ability of those selected hinges on the design of the exam. I propose a method to model candidates' performance to assess how effective the exam is at selecting high‐ability candidates.
Santiago Pereda‐Fernández
wiley   +1 more source