Table 6.

Tests on two independent experiments.

Tests		RMSE
		IE1	IE2
Test 4 (50% training data)	Single task learning	34.1116	35.8600
	Multi-task learning	29.7394	30.5459
Test 5 (with added tasks, 50% training data)		26.6910	26.1009

"E" denotes "Experiment". Test 4: Comparison between single task learning and multi-task learning on the two independent experiments, both trained with 50% of the data from each experiment, respectively. Test 5: Multi-task learning on the two independent experiments together with the former 14 experiments, totally 16 experiments, trained with 50% of the data from each experiment, respectively.