An Exponentiation Method for XML Element Retrieval

Table 8

Best performing runs based on 1/Rank over the known-item topics.

Run	MAP	1/Rank	P@10	P@20
p4-UAms2011adhoc	0.8112	0.9167	0.3167	0.2417
p2-ruc11AS2	0.7264	0.9167	0.3167	0.2417
p48-MPII-TOPX-20-co	0.2916	0.7222	0.2333	0.1833
p18-UPFbaseCO2i015	0.3752	0.7104	0.2500	0.2083
p16-BM25-EXPO	0.4745	0.6667	0.0833	0.0417
p77-PKUSIGMA01CLOUD	0.5492	0.6389	0.3167	0.2417
p30-2011CUTxRun2	0.3100	0.5730	0.2667	0.1750
p47-FCC-BUAP-R1	0.2500	0.3333	0.0333	0.0167
p12-IRIT-large-nodtd-06	0.0221	0.0487	0.0167	0.0333

The bold font refer to the % that use to calculate value of improvement.