Detection and Prediction of Internal Damage in the Ancient Timber Structure Based on Optimal Combined Model

Table 5

Evaluation indexes of the forecasting effect.

Method		SSE	MSE	MAE	MAPE	MSPE
Stress wave		2611.2	2.839	11.13	0.271	0.082
Drilling resistance		1795.7	2.354	8.466	0.124	0.036
Combined forecasting model	IOWA	402.878	1.115	3.421	0.083	0.036
	IOWGA	614.489	1.377	4.667	0.086	0.031
	IOWHA	615.947	1.379	4.732	0.087	0.031
	Entropy	1199.338	1.924	6.616	0.114	0.038
	Shapley	925.767	1.690	6.361	0.143	0.047

Note. Minimum value.