From: Using concave optimization methods for inexact quadratic programming problems with an application to waste management
Time span (k = 1)
Time span (k = 2)
Time span (k = 3)
\(FT_{k}^{\pm }\)
[−0.0065X + 5.70,
[−0.0070X + 6.27,
[−0.0076X + 6.90,
−0.0047X + 7.65]
−0.0055X + 8.38]
−0.0058X + 9.25]