[BUG]: Value below optimum in CEC2017F9

[mbienkowsk]

Description of the bug

as per the title

Steps To Reproduce

package version: 1.0.1

minimal repro:

    fun = cec2017.F92017(ndim=10)
    x = [
        28.65134357093416,
        79.89267547797499,
        55.14337860489706,
        -57.019180636897296,
        -41.90935633243056,
        73.93139548679916,
        -99.03857772878108,
        66.30462801394798,
        65.34292892651949,
        -5.497987795962517,
    ]
    print(f"Opfunu's global minimum of F9: {fun.f_global}")
    print(f"value for given x: {fun.evaluate(x)}")
    x_opt = fun.f_shift
    print(f"opfunu's minimal input: {x_opt}")
    print(f"value for opfunu's minimum input: {fun.evaluate(x_opt)}")

output:

Opfunu's global minimum of F9: 900.0
value for given x: -163.41502728126488
opfunu's minimal input: [-24.85625428   0.93425322  21.99393031  51.98676726 -18.40259266
 -12.37483856  16.08833668  -3.32547974 -51.33798956  42.40954301]
value for opfunu's minimum input: 900.0

Additional Information

No response

[xm1490]

来信收到。谢谢。徐明