A Novel Fractional Tikhonov Regularization Coupled with an Improved Super-Memory Gradient Method and Application to Dynamic Force Identification Problems

Table 2

The selection of the optimal fractional order.

Evaluation metrics	Fractional order
	0.1	0.2	0.3	0.4	0.5	0.6	0.7	0.8	0.9
RE	1.4687	1.1069	0.6304	0.5295	0.1038	0.3119	0.2825	0.4811	0.3463
CC	0.3410	0.3686	0.4649	0.5058	0.9422	0.6583	0.8200	0.8188	0.8199
Iterative steps	60	53	47	44	9	29	22	39	32