Local dependence estimation using semiparametric Archimedean copulas

نویسندگان

  • François VANDENHENDE
  • Philippe LAMBERT
چکیده

The authors define a new semiparametric Archimedean copula family having a flexible dependence structure. The family’s generator is a local interpolation of existing generators. It has locally-defined dependence parameters. The authors present a penalized constrained least-squares method to estimate and smooth these parameters. They illustrate the flexibility of their dependence model in a bivariate survival example. Estimation de la dépendance locale sur base de copules archimédiennes semiparamétriques Résumé : Les auteurs définissent une nouvelle famille de copules archimédiennes semiparamétriques dont la structure de dépendance est flexible. Le générateur de la famille est une interpolation locale de générateurs existants. Ses paramètres de dépendance sont définis localement. Les auteurs présentent une méthode de moindres carrés contraints pénalisés permettant l’estimation lisse de ces paramètres. Ils illustrent la flexibilité de leur modèle de dépendance dans un exemple de survie bivariée.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Parameter Estimation of Some Archimedean Copulas Based on Minimum Cramér-von-Mises Distance

The purpose of this paper is to introduce a new estimation method for estimating the Archimedean copula dependence parameter in the non-parametric setting. The estimation of the dependence parameter has been selected as the value that minimizes the Cramér-von-Mises distance which measures the distance between Empirical Bernstein Kendall distribution function and true Kendall distribution functi...

متن کامل

Construction of asymmetric multivariate copulas

In this paper we introduce two methods for the construction of asymmetric multivariate copulas. The …rst is connected with products of copulas. The second approach generalises the Archimedean copulas. The resulting copulas are asymmetric and may have more than two parameters in contrast to most of the parametric families of copulas described in the literature. We study the properties of the pro...

متن کامل

Semiparametric Estimation in Models of First-price, Sealed-bid Auctions with Affiliation∗

Within the affiliated private-values paradigm, we develop a tractable empirical model of equilibrium behaviour at first-price, sealed-bid auctions that admits a general dependence structure. The model is nonparametrically identified, but estimating the primitives is plagued by the curse of dimensionality when the number of bidders is even modestly large, so we develop a semiparametric estimatio...

متن کامل

Copula-based semiparametric models for multivariate time series

The authors extend to multivariate contexts the copula-based univariate time series modeling approach of Chen & Fan [X. Chen, Y. Fan, Estimation of copula-based semiparametric time series models, J. Econometrics 130 (2006) 307–335; X. Chen, Y. Fan, Estimation and model selection of semiparametric copula-based multivariate dynamic models under copula misspecification, J. Econometrics 135 (2006) ...

متن کامل

On Generators in Archimedean Copulas

This study after reviewing  construction methods of generators in Archimedean copulas (AC),  proposes several useful lemmas related with generators of AC. Then a new trigonometric Archimedean family will be shown which is based on cotangent function. The generated new family is able to model the low dependence structures.

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2005