nlr (version 0.1-3)

individ: Split individuals

Description

Hessian of a function is symetric matrix, individ function constract lower diagonal parts and store them in collumns of a matrix. Thus the only unique hessians will be given.

Usage

individ(hessian)

Arguments

hessian

Three dimentional \(n \times p \times p\) array of hessian.

Value

\(n \times (p*p+1)\) matrix of hessian values, constracted from the lower triangular of hessian.

Details

It is used in curvature function to compute the curvatures.

References

Bates, D.M., and Watts, D. G. (1980). Relative curvature measures of nonlinearity, J. R. statistic. Ser. B 42: 1-25.

See Also

curvature

Examples

# NOT RUN {
## The function is currently defined as
"individ"
# }