Cross-Modal Discrimination Hashing Retrieval Using Variable Length

Table 1

MAP image retrieval text img2txt.

	WIKI data set				NUS-WIDE data set				MIRFlickr data set
	16	32	64	128	16	32	64	128	16	32	64	128
CCA	0.184	0.170	0.150	0.140	0.373	0.366	0.361	0.358	0.579	0.574	0.571	0.568
SCM	0.234	0.241	0.246	0.257	0.501	0.542	0.553	0.551	0.610	0.631	0.647	0.641
SEPH	0.276	0.296	0.300	0.313	0.560	0.578	0.582	0.581	0.671	0.652	0.681	0.648
GSPH	0.272	0.290	0.305	0.307	0.571	0.582	0.585	0.593	0.665	0.676	0.687	0.692
VHC	0.271	0.368	0.351	0.369	0.627	0.632	0.644	0.656	0.766	0.772	0.778	0.779