STLIS: A Scalable Two-Level Index Scheme for Big Data in IoT

Table 6

Storage space (GB).

	RDF-3X	Bitmat	TripleBit	STLIS
LUBM50	0.35	0.32	0.28	0.22
LUBM2000	13.95	13.64	8.74	8.83
UniProt	33.89	55.83	15.19	17.95
SP^2Bench-100M	0.038	0.044	0.034	0.026