Table 5.

The performance of other methods for initialization.

Method	Dataset
	LegalQA		TrecQA		WikiQA
	MAP	MRR	MAP	MRR	MAP	MRR
RLAS-BGDM	0.796 ± 0.002	0.819 ± 0.026	0.824 ± 0.093	0.836 ± 0.026	0.810 ± 0.056	0.825 ± 0.136
RLAS-BGDA	0.783 ± 0.125	0.776 ± 0.095	0.769 ± 0.025	0.786 ± 0.269	0.745 ± 0.136	0.761 ± 0.002
RLAS-BGDMA	0.791 ± 0.005	0.772 ± 0.103	0.796 ± 0.126	0.812 ± 0.236	0.793 ± 0.026	0.793 ± 0.005
RLAS-BOSS	0.810 ± 0.136	0.814 ± 0.004	0.853 ± 0.023	0.863 ± 0.026	0.840 ± 0.027	0.855 ± 0.127
RLAS-BBR	0.842 ± 0.009	0.853 ± 0.000	0.860 ± 0.036	0.878 ± 0.120	0.852 ± 0.103	0.870 ± 0.035
RLAS-BGWO	0.771 ± 0.205	0.783 ± 0.018	0.755 ± 0.072	0.781 ± 0.126	0.755 ± 0.025	0.773 ± 0.026
RLAS-BBAT	0.862 ± 0.003	0.818 ± 0.019	0.876 ± 0.093	0.880 ± 0.239	0.852 ± 0.061	0.873 ± 0.082
RLAS-BDA	0.816 ± 0.072	0.829 ± 0.022	0.863 ± 0.002	0.883 ± 0.056	0.836 ± 0.082	0.862 ± 0.091
RLAS-BSSA	0.747 ± 0.029	0.769 ± 0.072	0.750 ± 0.042	0.763 ± 0.025	0.746 ± 0.041	0.755 ± 0.001
RLAS-BCOA	0.860 ± 0.085	0.889 ± 0.089	0.882 ± 0.063	0.897 ± 0.237	0.872 ± 0.093	0.862 ± 0.017
RLAS-BHMS	0.849 ± 0.002	0.880 ± 0.123	0.879 ± 0.090	0.893 ± 0.036	0.840 ± 0.100	0.870 ± 0.009
RLAS-BGDM	0.752 ± 0.012	0.753 ± 0.027	0.769 ± 0.058	0.789 ± 0.085	0.731 ± 0.000	0.760 ± 0.018
RLAS-BABC	0.875 ± 0.004	0.906 ± 0.021	0.888 ± 0.046	0.900 ± 0.082	0.878 ± 0.016	0.889 ± 0.023