Information Technology Reference
In-Depth Information
The Manager node provides the bids. Those are unsolved sub problems
contract. The message format in contract net protocol:
For example
TO
All nodes
FROM
Manager
Task bid announcement
TYPE
ContractID:
xx-yy-zz
Task Abstraction:
<description of the problem>
Eligibility Specification:
<list of the minimum requirements>
Bid Specification:
<description of the required application
information>
Expiration time
<latest possible application time>
The bids are open for all agents. They solve the bids through the contract
processor. They apply the local database to solve the current resources and agent
knowledge. The contract processor decides which tasks are worth to do. If they
want to do, they need inform the manager using the following message format.
TO:
Manager
FROM:
Node X
TYPE:
Application
ContractID:
xx-yy-zz
Node Abstraction:
<description of the node's capabilities>
The manager must select nodes to give the contract to the most proper node in
the whole application. It visits the concrete knowledge solution and approach to
select the best performance and assign the sub problem to the node. According to
the message, the assignment contract is as follows:
TO:
Node X
FROM:
Manager
TYPE:
Cntract
ContractID:
xx-yy-xx
Task Specification:
<description of the subproblem>
The communicator send the confirm message for accepting the contract to the
Manager. Once the problem finished, the solved problem is sent to the Manger.
The promising node is in charge of the solution of the problem. The contract net
protocol is for task allocation. The node can not accept other agents' current state
