Showing 1 - 10 of 12
In this paper we have found an analytical formula for a copula that connects the numbers Ni of customers in the nodes of a Gordon and Newell queueing network. We have considered two cases: the first one is the case of the network with 2 nodes, and the second one is the case of the network with...
Persistent link: https://www.econbiz.de/10005037753
The stochastic frontier model was first proposed in the context of production function estimation to account for the effect of technical inefficiency. The inefficiency causes actual output to fall below the potential level (that is, the production frontier) and also raises production cost above...
Persistent link: https://www.econbiz.de/10009025317
We use the copula approach to study the structure of dependence between sell-side analysts' consensus recommendations … and subsequent security returns, with a focus on asymmetric tail dependence. We match monthly vintages of I …
Persistent link: https://www.econbiz.de/10011108056
This paper considers the problem of parameter estimation in a general class of semiparametric models when observations are subject to missingness at random. The semiparametric models allow for estimating functions that are non-smooth with respect to the parameter. We propose a nonparametric...
Persistent link: https://www.econbiz.de/10011109911
variables, it also suffers from many shortcomings. Reason why, we used copula functions to understand better the dependence …
Persistent link: https://www.econbiz.de/10011110477
components is modeled through a copula function with marginals. Allowing the copula dependence parameter time-varying, we … estimate the dynamic nonlinear dependence between absolute returns and signs, which governs time- varying skewness for out …-of-sample forecast of financial returns. The empirical results in this paper show that the proposed models with dynamic dependence obtain …
Persistent link: https://www.econbiz.de/10011114130
aggregating the various risks that compose it. This can only be done through modelling of their dependence. It is a well known …, in times of crisis the dependence between risks increases. Experience has shown that very large loss events almost always … methods of modelling dependence and their influence on diversification benefits. We show that the latter strongly depend on …
Persistent link: https://www.econbiz.de/10009246890
support their business. The RAC depends on both the distribution and the dependence functions that are applied among the risks … diversification gain. Several copulas are considered in order to focus on the role of dependencies. To be consistent with the … shortfall. We highlight the behavior of different capital allocation principles according to the dependence assumptions and the …
Persistent link: https://www.econbiz.de/10009246898
This work highlights the ways in which relationships between large retailers and suppliers develop themselves dependinf on of various types of suppliers. Suppliers diffrentiate among each other on the basis of size, the competitive structure of the market to which they belong. The case of...
Persistent link: https://www.econbiz.de/10011107775
When, in the mid-2000s, large parts of the global South experienced an impressive economic boom, the idea that a number of emerging market economies were “decoupling” from the industrialized economies in the North gained considerable prominence. The financial and economic crisis that...
Persistent link: https://www.econbiz.de/10011108190