extract inverse Hessian matrix from ncpest class

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Description

return inverse Hessian matrix from ncpest class

Usage

1
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## S3 method for class 'ncpest'
vcov(object,...)

Arguments

object

an object of class ncpest

...

currently not used

Value

a numeric inverse Hessian matrix

Author(s)

Long Qu

See Also

parncpt, nparncpt

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