An Exponentiation Method for XML Element Retrieval

Table 7

Best performing runs based on MAP over the information topics.

Run	MAP	1/Rank	P@10	P@20
p16-BM25-EXPO [16]	0.3564	0.8000	0.5000	0.4200
p30-2011CUTxRun2 [17]	0.3449	0.7067	0.5000	0.4700
p47-FCC-BUAP-R1 [18]	0.3219	1.0000	0.5600	0.4300
p2-ruc11AMS [19]	0.3189	0.6500	0.4200	0.4500
p4-UAms2011adhoc [20]	0.3079	0.6750	0.3800	0.3100
p18-UPFbaseCO2i015 [21]	0.2576	0.6346	0.4600	0.4400
p77-PKUSIGMA02CLOUD [17]	0.2118	0.5015	0.4400	0.4200
p48-MPII-TOPX-20-co [17]	0.0900	0.3890	0.2600	0.1800
p12-IRIT-focus-mergeddtd-04 [22]	0.0366	0.3022	0.2200	0.1100

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