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Questions and Answers
What is the primary purpose of the 'Performative' field in an agent communication message?
What is the primary purpose of the 'Performative' field in an agent communication message?
- To define the syntax of the message content.
- To provide a vocabulary of symbols used in the message.
- To indicate the sender's intent or purpose in sending the message. (correct)
- To specify the content of the message.
All agent communication is based on Remote Procedure Calls (RPC).
All agent communication is based on Remote Procedure Calls (RPC).
False (B)
According to FIPA's Agent Communication Language (ACL), what is contained in a message?
According to FIPA's Agent Communication Language (ACL), what is contained in a message?
Messages have a format specified by FIPA's Agent Communication Language (ACL).
The communication between agents is ______ message passing.
The communication between agents is ______ message passing.
Match each message field with its description:
Match each message field with its description:
Which of the following is NOT a typical 'Performative' type in agent communication?
Which of the following is NOT a typical 'Performative' type in agent communication?
An agent can only pick up the last message posted in its mailbox.
An agent can only pick up the last message posted in its mailbox.
What method in JADE provides means to interact with all fields in a message?
What method in JADE provides means to interact with all fields in a message?
The createReply() method of the ACLMessage class automatically sets the ______ and all the fields used to control the conversation.
The createReply() method of the ACLMessage class automatically sets the ______ and all the fields used to control the conversation.
Match the following steps to construct a message
Match the following steps to construct a message
What does the receive() method return if the message queue is empty?
What does the receive() method return if the message queue is empty?
The createReply() method only sets the content of the reply message.
The createReply() method only sets the content of the reply message.
In agent communication, what is considered a 'conversation'?
In agent communication, what is considered a 'conversation'?
To execute the action() method only when a new message is received, you can use the ______ method of the Behavior class.
To execute the action() method only when a new message is received, you can use the ______ method of the Behavior class.
Match following message fields with its appropriate description
Match following message fields with its appropriate description
Which agent communication construct helps in carrying out a "complex" conversation?
Which agent communication construct helps in carrying out a "complex" conversation?
Whenever a message is posted in the message queue the sending agent is notified.
Whenever a message is posted in the message queue the sending agent is notified.
What does it mean for the communication between agents to be 'asynchronous'?
What does it mean for the communication between agents to be 'asynchronous'?
The ______ is the syntax used to express the content.
The ______ is the syntax used to express the content.
Match the term with its definition
Match the term with its definition
Flashcards
ACL (Agent Communication Language)
ACL (Agent Communication Language)
A specification for message format in agent communication.
Performative
Performative
Indicates the sender's intention or purpose in sending a message.
Message Fields
Message Fields
Sender, receiver, performative, content, content language, and ontology.
Ontology
Ontology
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receive() method
receive() method
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createReply() method
createReply() method
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Conversation
Conversation
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Study Notes
- Agents utilize Remote Procedure Calls (RPC) for communication.
- Each agent possesses a mailbox for receiving messages from other agents.
- Notification is sent to the receiving agent when a message is posted to the message queue.
- The timing of when to pick up a message is determined by the programmer.
- Message formats adhere to FIPA's Agent Communication Language (ACL).
- Agents construct and decode messages internally, ensuring all communication is message-based.
- Communication occurs through asynchronous message passing.
Message Fields
- Sender of the message.
- Receiver of the message.
- Performative: sender's purpose.
- Content of the message.
- Content language: syntax.
- Ontology: vocabulary.
- Reply-with.
- In-reply-to.
- Reply-by.
- Performative indicates the sender's objective in sending the message.
- Types of performatives include request, inform, query_if, and propose.
- JADE provides methods to get and set all message fields.
Constructing a Message
- Create a message object (ACLMessage).
- Set the performative.
- Set the sender and recipients.
- Set message attributes.
- Fill the content.
- Agents use the receive() method to retrieve messages.
- The receive() method returns the first message in the queue and removes it or returns null if the queue is empty.
- The createReply() method of the ACLMessage class generates a new ACLMessage, configuring receivers and fields for conversation control.
- Agent threads can start a continuous loop; the block() method of the Behavior class can execute an action only when a new message is received.
- A conversation involves a sequence of messages exchanged between two or more agents.
- RequestPerformer behavior exemplifies a behavior engaged in a complex conversation.
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