Research Article
Blockchain-Enabled Joint Resource Allocation for Virtualized Video Service Functions
| | Input: | | (1) | Initialize the actor network with parameter | | (2) | Initialize the critic network with parameter | | (3) | Initialize the actor network parameters for each thread | | (4) | Initialize the critic network parameters for each thread | | (5) | for each SFC do | | (6) | for each VSF resource allocation scheme in in edge cloud do | | (7) | if is not registered in the VSCB then | | (8) | remove from | | (9) | end for | | (10) | if is empty then | | (11) | Calculate in core cloud | | (12) | Select the VSF allocation method from | | (13) | Select the VSF allocation method from | | (14) | Calculate the total cost | | (15) | end for | | (16) | while the SF set is not empty do | | (17) | Set the gradient of the two networks and | | (18) | Synchronize the parameters of the thread and | | (19) | Obtain state | | (20) | Repeat: | | (21) | The state features are extracted from the network based on a multiple threshold mechanism, and action is executed according to policy | | (22) | Get the reward of environmental feedback and the next state | | (23) | | | (24) | Until termination status , or | | (25) | Obtain from the critic network | | (26) | for each step do | | (27) | | | (28) | Calculate the gradient of the actor network about : | | (29) | Calculate the gradient of the critic network about : | | (30) | | | (31) | end for | | (32) | Use and to asynchronously update the global shared parameters and . Send the and to agent | | (33) | end while | | | Output: |
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