New Zealand Journal of Forestry Science

Table 6 Performance metrics of linear models estimating MOE of boles. Italicised values indicate the recommended model; bold values indicate the best value(s) in each column

From: Validation of models predicting modulus of elasticity in Douglas-fir trees, boles, and logs

	Calibration dataset						Validation dataset			Comments
Fixed effects^a	R ² _marg	R ² _cond	AIC	RMSE	MAPE	TP rate	RMSE	MAPE	TP rate
				(GPa)	(%)	(%)	(GPa)	(%)	(%)
V ²	0.45	0.60	432	1.2	9	60	1.3	9	73
D	0.14	0.43	493	1.6	12	27	1.1	7	36
ρ	0.18	0.43	481	1.5	11	36	1.2	8	27
A	0.12	0.16	511	1.5	11	44	1.1	9	36
T	0.27	0.53	487	1.5	12	51	1.0	7	46
E	0.60	0.73	373	1.0	7	64	1.3	9	91	High TP rate
V ² + ρ	0.60	0.73	372	1.0	7	64	1.3	9	91	High TP rate
V ² + H	0.50	0.65	428	1.2	9	64	1.4	8	82
D + A	0.31	0.34	484	1.4	10	47	1.2	10	55
D + H	0.27	0.53	485	1.5	12	56	1.0	7	46
D + ρ	0.31	0.59	444	1.4	10	42	1.2	9	55
H + ρ	0.20	0.56	477	1.6	12	33	1.3	10	46
T + ρ	0.34	0.54	454	1.3	11	56	1.0	8	36
E + T	0.61	0.78	367	1.0	8	64	1.3	9	91	High TP rate
T + A + ρ	0.45	0.50	450	1.2	9	64	1.0	8	64
E + D + H	0.61	0.78	368	1.0	8	67	1.3	9	91	High TP rate
V ² + D + H	0.53	0.76	418	1.3	10	69	1.4	9	82
V ² + ρ + D	0.59	0.75	367	1.0	7	67	1.3	10	82
V ² + ρ + T	0.61	0.77	365	1.0	8	67	1.3	9	91	High TP rate
V ² + ρ + D + A	0.69	0.74	364	0.9	6	69	1.3	10	73	Best AIC

^aAll variables are as defined in Table 2

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