Table 1.

Overview of investigated datasets ordered by size and their properties in the published version, the large, small and very small datasets are divided by the dashed line categorical features (cat.), interfacial shear strength (IFSS), coefficient of thermal expansion (CTE).

Alias + Source	Domain	Targets	Size	Features	Cat.	HP. Tuning	Train-Test-Split	$R^2$	RMSE
Guo-201936	Steel	tensile strength, yield strength, elongation	63162	27	✗	None	5-fold CV	$✓$	$✓$
UCI-concrete30	Concrete	compressive strength	1030	8	✗	See Table 2	See Table 2	$✓$	$✓$
Yin-202140	FRP	IFSS, pullout force	900	11	✗	Manual	89/11	$✓$	✗
Hu-202137	Aluminum	tensile strength, yield strength, elongation	896, 860, 783	27	$✓$	GS	80/20	$✓$	$✓$
Matbench-steels28	Steel	yield strength	312	14	✗	Automatminer	5-fold NCV *	✗	✗
Atici-201131	Concrete	compressive strength	140	3	✗	Manual	85/15	$✓$	$✓$
Su-2020-241	FRP + concrete	bond force-2	136	5	✗	RS+GS	80/20	$✓$	$✓$
Su-2020-141	FRP + concrete	bond force-1	122	7	✗	RS+GS	80/20	$✓$	$✓$
Huang-202133	Concrete	compressive strength, flexural strength	114	13	✗	Manual	80/20	$✓$	✗
Bachir-201832	Concrete	compressive strength	112	3	✗	Manual	85/15	$✓$	$✓$
Koya-201835	Concrete	compressive strength, Young's modulus, modulus of rupture, split tensile strength, Poision's ratio, CTE	110	10	$✓$	Manual	10-fold CV	$✓$	$✓$
Xiong-201439	AM of steel	width, height	43	4	✗	Manual	72/28 *	✗	✗

*Exact train-test-split available.