Semantics Data mining 7 Deep learning 7 Classification (of information) 4 Correlation graphs 3 Cross-modal 3 Cross-modal hash learning 3 Data Mining 3 Deep model 3 Dependency relationship 3 Hamming distance 3 Hash functions 3 Hashing method 3 Hashing retrieval 3 Higher dimensional features 3 Humans 3 Image regions 3 Intermodality 3 Modal analysis 3 article 3 cross-modal hash learning 3 data mining 3 deep model 3 hashing retrieval 3 human 3 semantics 3 Aggregates 2 Attention mechanisms 2 Big data 2 Decision making 2