Deep Hash with Optimal Transport-Based Domain Adaptation for Multisite MRI Retrieval

Table 2

The mAP results achieved by different methods with different bits of hash code in retrieving data from the four sites of the ABIDE database. Data from each site are used in turn as the target domain (test set and query set) and data from the remaining sites are used as the source domain (training set and retrieval database).

2method	Leuven (target domain)				NYU (target domain)				UCLA (target domain)				UM (target domain)
	24 bits	32 bits	48 bits	64 bits	24 bits	32 bits	48 bits	64 bits	24 bits	32 bits	48 bits	64 bits	24 bits	32 bits	48 bits	64 bits
DHN	0.6362	0.6360	0.6349	0.6524	0.6423	0.6773	0.6240	0.7058	0.7129	0.7409	0.7129	0.7139	0.6528	0.6758	0.6274	0.6706
HashNet	0.6485	0.6061	0.6369	0.6346	0.6453	0.6310	0.6118	0.6567	0.7039	0.7441	0.7264	0.7400	0.6455	0.6205	0.6012	0.6316
LCDSH	0.6311	0.5984	0.6609	0.6630	0.5964	0.5562	0.6352	0.5999	0.7151	0.7256	0.7127	0.7112	0.5849	0.5762	0.6481	0.6375
DCH	0.6337	0.6419	0.6502	0.6548	0.6395	0.6614	0.6540	0.5996	0.6529	0.6727	0.7423	0.6820	0.5976	0.6222	0.6365	0.6596
QSMIH	0.6576	0.6350	0.6678	0.6894	0.6413	0.6644	0.6234	0.6129	0.6627	0.7017	0.7412	0.7396	0.5897	0.6254	0.6473	0.5841
DTSH	0.6349	0.6360	0.6349	0.6670	0.6474	0.6649	0.5989	0.6472	0.7774	0.6883	0.7189	0.7379	0.6833	0.6003	0.5828	0.5891
TAH	0.6486	0.6918	0.6118	0.6478	0.6738	0.6614	0.6260	0.6511	0.6669	0.6625	0.6753	0.7034	0.6779	0.6877	0.6861	0.7021
SH	0.5343	0.5291	0.5352	0.5231	0.5253	0.5378	0.5404	0.5346	0.5240	0.5216	0.5315	0.5266	0.5377	0.5329	0.5404	0.5303
ITQ	0.5421	0.5504	0.5458	0.5553	0.5476	0.5366	0.5465	0.5512	0.5369	0.5417	0.5383	0.5421	0.5396	0.5542	0.5439	0.5297
LFH	0.4867	0.4867	0.4867	0.4867	0.5787	0.5787	0.5787	0.5787	0.6085	0.6085	0.6085	0.6085	0.6025	0.6025	0.6025	0.6025
SDH	0.5789	0.5707	0.5800	0.6039	0.5854	0.5765	0.5967	0.5830	0.5539	0.5254	0.5154	0.5214	0.6520	0.6249	0.5402	0.5941
GTH	0.5255	0.5312	0.5324	0.5339	0.5415	0.5406	0.5367	0.5391	0.5321	0.5300	0.5288	0.5353	0.5304	0.5321	0.5285	0.5374
MSFR (ours)	0.7027	0.7188	0.7456	0.7054	0.6930	0.6837	0.6925	0.6880	0.7684	0.7269	0.7542	0.7236	0.6924	0.7220	0.7545	0.7209