Table 8.

Validation results for the GBM model using the herd splitting method

BCS	Herd 1		Herd 2		Herd 3
	Exact	0.5-unit DEV	Exact	0.5-unit DEV	Exact	0.5-unit DEV
1.5	3	67	0	90	0	78
2.0	25	86	42	98	29	88
2.5	51	93	63	99	58	92
3.0	62	94	52	97	33	95
3.5	49	93	38	97	29	81
4.0	19	88	25	88	12	69
4.5	0	100	0	40	0	32
WAvg	42.2	89.8	48.0	95.9	35.9	86.6
R 2	0.49		0.67		0.45
RMSE	0.32		0.33		0.35

Accuracy of the BCS categories is presented in percentage. GBM = Gradient Boosting Machine, BCS = Body Condition Score, R² = R-square, RMSE = Root Mean Square Error, Exact = exact score, DEV = deviation, WAvg = weighted average by frequency.