Results 51 to 60 of about 91,197 (260)
On Conditional Value at Risk (CoVaR) for tail-dependent copulas
Dependence Modeling, 2017 The paper deals with Conditional Value at Risk (CoVaR) for copulas with nontrivial tail dependence. We show that both in the standard and the modified settings, the tail dependence function determines the limiting properties of CoVaR as the conditioning ...
Jaworski Piotr
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Using Tail Dependence on Copula-based Regression Models in Mixed Data [PDF]
The Egyptian Statistical JournalThis paper explores the efficacy of incorporating tail dependence into copula-based regression models applied to mixed health insurance data. Recognizing the limitations of traditional Generalized Linear Models (GLMs) in capturing the nuanced ...
Fatma Alshenawy
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A method of moments estimator of tail dependence [PDF]
Bernoulli, 2007 Published in at http://dx.doi.org/10.3150/08-BEJ130 the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
Einmahl, John H.J. +2 more
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FEBS Letters, EarlyView.Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil +4 more
wiley +1 more source
Bivariate Extreme Statistics, II
Revstat Statistical Journal, 2012 We review the current state of statistical modeling of asymptotically independent data. Our discussion includes necessary and sufficient conditions for asymptotic independence, results on the asymptotic independence of statistics of interest, estimation
Miguel de Carvalho , Alexandra Ramos
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Volatility Modeling and Dependence Structure of ESG and Conventional Investments
Risks, 2022 The question of whether environmental, social, and governance investments outperform or underperform other conventional financial investments has been debated in the literature.
Joanna Górka, Katarzyna Kuziak
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Distorted Copulas: Constructions and Tail Dependence [PDF]
Communications in Statistics - Theory and Methods, 2010 Given a copula C, we examine under which conditions on an order isomorphism ψ of [0, 1] the distortion C ψ: [0, 1]2 → [0, 1], C ψ(x, y) = ψ{C[ψ−1(x), ψ−1(y)]} is again a copula. In particular, when the copula C is totally positive of order 2, we give a sufficient condition on ψ that ensures that any distortion of C by means of ψ is again a copula.
Durante F, Foschi R, Sarkoci P
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FEBS Letters, EarlyView.Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure +3 more
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Dissecting the Multivariate Extremal Index and Tail Dependence
Revstat Statistical Journal, 2020 A central issue in the theory of extreme values focuses on suitable conditions such that the well[1]known results for the limiting distributions of the maximum of i.i.d. sequences can be applied to stationary ones.
Helena Ferreira , Marta Ferreira
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FEBS Letters, EarlyView.Septin 9 polybasic domains couple phosphoinositide‐rich membrane binding to centrosome positioning, Golgi organization, and microtubule acetylation to control epithelial polarity. Their loss disrupts this axis, causing centrosome mispositioning, Golgi fragmentation, reduced microtubule acetylation, and polarity inversion via upregulation of the ...
Ting ting Cai +4 more
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