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Tabl e 2.
Precision of Source Selection(%)(- means not supported)
Query DARQ SPLENDID FedX LAWS
CD1 -
10
30
33.3
CD2 12.5
100
100 100
CD3 11.4
100
12.5 100
CD4 0.7
100
1.56 100
CD5 12.5
100
12.5 100
CD6 2.8
5.56
5.56 25
CD7 3.1
25
3.13 100
LS1
50
100
100 100
LS2
-
10
10
50
LS3
1.4
100
12.5 100
LS4
11.1
100
100 100
LS5
1.4
12.5
12.5 100
LS6
1.4
12.5
12.5 100
LS7
25
50
25
100
avg.
11.11 58.97
31.27 86.31
Fig. 1.
Query execution time of DARQ and its LAWS extension
Fig. 2.
Query execution time of SPLENDID and its LAWS extension
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