INTRODUCTION

DEEP LEARNING  
2.1 Basic Structure of DL  
2.2 Workflow when Using DL in SE  

METHODOLOGY  
3.1 Research Questions  
3.2 Literature Search and Selection  
3.3 Inclusion and Exclusion Criteria  
3.4 Data Extraction and Collection  

RQ1: WHAT ARE THE TRENDS IN THE PRIMARY STUDIES ON USE OF DL IN SE?  
Summary  

RQ2: WHAT DL TECHNIQUES ARE APPLIED TO SUPPORT SE TASKS?  

RQ3: WHAT KEY FACTORS CONTRIBUTE TO DIFFICULTY WHEN TRAINING DNNs IN SE?  
Summary  

RQ4: WHAT TYPES OF SE TASKS AND WHICH SE PHASES HAVE BEEN FACILITATED BY DL-BASED APPROACHES?  

LIMITATIONS

CHALLENGES AND OPPORTUNITIES

CONCLUSION