Copula is an effective tool to build distribution function at the same time from the coast and the marginal distribution to describe the dependencies between random variables. The term "Copula" was first used by American mathematician Abe Sklar (1959) in the theorem that bears his name. Until now, copula theory is still very much open problem especially in the case of multiple dimensions. We know that the probability distribution function simultaneously (join Distributions) contains all the information about a random vectors. This information includes the marginal distribution, condition and relationship dependencies of random variables. Therefore, the structure depends entirely random variables can be described by their copula. Or in other words, be seen as copula function dependent structure of random variables.
Copula has many applications, especially in finance. The first application of the copula's financial risk management. Cherubini-Luciano (2000) estimates the value copula VaR for portfolio with no conditions; Palaro-Hotta (2006) estimates the value of the portfolio VaR with conditional copula ...
copula second application in the valuation of financial derivative instruments: options (option) and credit derivatives (credit derivative - the contract allows the transfer of credit risk from one object to another object on the financial markets).
Applied's third fiscal copula in the optimization portfolio.
app Wednesday copula of research in finance is the "spread" (contagion) between the financial markets.
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