Table 4: The performance of the LS method, CD method, and LS-CD method.

ProbDimLSCDLS-CD
NI/NF/NGNI/NF/NGNI/NF/NG

PEN 110051/142/9262/223/18251/168/125
100033/125/8352/181/16533/164/117
1000021/118/7231/157/12121/132/102
TRIG 100 305/399/398 NaN305/399/398
500 343/424/423NaN343/424/423
ROSEX 50052/112/107 92/267/238 50/186/157
1000 70/149/14598/287/255 70/246/183

Prob: the test problem name from [18]; Dim: the problem dimension; NI: the iterations number; NF: the function evaluations number; NG: the gradient evaluations number.