Database Reference
In-Depth Information
0.3
0.25
A
RP
NDCG
P10
0.2
0.15
0.1
0.05
0
6
9
12
15
18
21
24
27
30
33
Threadshold of performance difference(%)
Fig. 1.
Average error rates of four ranking based metrics when a given performance
difference threshold is used
0.2
ED_linear
ED_cobic
AP
RP
NDCG
P10
0.16
0.12
0.08
0.04
0
0.2
0.25
0.3
0.35
0.4
0.45
0.5
0.55
0.6
Differentiation rate
Fig. 2.
Average error rates of the TREC 9 group in the condition of fixed differentiation
rates
