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Table 5 Sum of triple-pattern-wise sources selected for each query

From: SAFE: SPARQL Federation over RDF Data Cubes with Access Control

System

QE-1

QE-2

QE-3

QE-4

QE-5

QE-6

QE-7

QE-8

QE-9

QE-10

QL-1

QL-2

QL-3

QL-4

QL-5

Avg

SAFE

7

11

13

16

14

12

14

12

10

11

6

6

3

9

5

10

FedX

8

18

20

24

24

15

19

19

11

22

14

16

7

15

13

16

HiBISCuS

9

6

10

16

12

5

12

9

3

11

14

16

7

15

13

10

SPLENDID

8

13

20

24

18

16

20

19

12

22

14

16

7

15

13

16