Hash functions Semantics 5 Deep learning 4 Hashing method 4 Correlation graphs 3 Cross-modal 3 Cross-modal hash learning 3 Deep model 3 Dependency relationship 3 Field programmable gate arrays (FPGA) 3 Hamming distance 3 Hashing retrieval 3 Higher dimensional features 3 Image regions 3 Intermodality 3 Modal analysis 3 cross-modal hash learning 3 deep model 3 hashing retrieval 3 Algorithms 2 Block codes 2 Comparative analyzes 2 Errors 2 FPGA architectures 2 Fault tolerance 2 Hamming code 2 Hardware architecture 2 Hardware implementations 2 Internet of things 2 Internet of things industries 2