The correlation filter response peak is combined with the average Peak-to- Correlation Energy
(APCE) as an occlusion index to determine whether the target is occluded.
Density-functional approximation for the correlation energy
of the inhomogeneous electron gas.
Results obtained with the correlation energy
density functionals of Becke and Lee, Yang and Parr.
"Minimum average correlation energy
Furthermore, Bongini and Bottoni used density functional theory (DFT) and found that correlation energy
effects are to be taken into account for accurate calculations of the conformal properties of organic compounds .
We obtain total potential, interaction potential, and the correlation energy that is the rate of required energy for putting electron in the correlation hole and at the end we will find a relation for generalized dielectric function.
This induced potential causes the correlation energy which an electron needs in order to be located at the correlation hole.
The minimum average correlation energy
(MACE) filters  are one of such design and show good results in the field of automatic target recognition and applications in biometric verification [14, 26].
Wang, "Accurate and simple analytic representation of the electron-gas correlation energy
," Physical Review B, vol.
After this technological step the midgap center density drops from the [10.sup.11]/[cm.sup.2]/eV range to the [10.sup.10]/[cm.sup.2]/eV and the correlation energy
between the centers is in the range 0 to 0.5 eV.