1 INTRODUCTION  

2 KNOWLEDGE SHARING IN A DISTRIBUTED LEARNING SETTING  

3 KNOWLEDGE SHARING IN DISTRIBUTED SUPERVISED LEARNING  

4 KNOWLEDGE SHARING IN DISTRIBUTED UNSUPERVISED LEARNING  

5 KNOWLEDGE SHARING IN DISTRIBUTED SEMI-SUPERVISED LEARNING  

6 KNOWLEDGE SHARING IN DISTRIBUTED DEEP REINFORCEMENT LEARNING  

7 LIMITATIONS OF CURRENT KNOWLEDGE SHARING SCHEMES AND FUTURE DIRECTIONS  

8 CONCLUSION  