1 INTRODUCTION  
2 PRELIMINARY KNOWLEDGE  
3 UNIFIED PARADIGM  
3.1 Formulation  
3.2 Unified Paradigm  
3.3 Training Strategy  
4 MAJOR DEVELOPMENTS  
4.1 Major Developments in Bottom-up Methods  
4.2 Major Developments in Top-down Methods  
5 FUTURE RESEARCH DIRECTIONS  
5.1 Weakly-supervised Pursuit Methods  
5.2 Pursuit Methods using Region-based Decomposition  
5.3 Pursuit Methods with Higher-order Potential Terms  
5.4 Pursuit Methods with Advanced Domain Adaptation  
5.5 Pursuit Methods without Message Passing  
6 BENCHMARKS AND EVALUATION METRICS  
6.1 Object Detection  
6.2 Visual Semantic Segmentation  
6.3 Visual Relationship Detection  
6.4 Scene Graph Generation  
7 EXPERIMENTAL COMPARISON  
7.1 Object Detection  
7.2 Visual Semantic Segmentation  
7.3 Visual Relationship Detection  
7.4 Scene Graph Generation  
8 CONCLUSION