```
I. INTRODUCTION  

II. AN OVERVIEW OF ARTIFICIAL INTELLIGENCE  

III. AI FOR SATELLITE COMMUNICATIONS  

IV. AI FOR HIGH ALTITUDE PLATFORMS COMMUNICATIONS  

V. AI FOR UNMANNED AERIAL VEHICLES COMMUNICATIONS  

VI. AI FOR OPTIMIZING SPACE-AIR-GROUND INTEGRATED NETWORKS  

VII. SAGINS FOR ARTIFICIAL INTELLIGENCE  

VIII. OPEN ISSUES AND FUTURE DIRECTIONS  

IX. CONCLUSION  
```