Agent Communication Activity – KQML and KIF

This activity demonstrates the use of agent communication through KQML (Knowledge Query and Manipulation Language) and KIF (Knowledge Interchange Format). The interaction takes place between two agents: Alice, a procurement agent responsible for ordering stock, and Bob, a warehouse management agent responsible for tracking inventory.

Using KQML performatives like ask-one and tell, Alice and Bob exchange structured messages about the availability and specifications of 50-inch televisions. The content of each message is expressed in KIF, which allows for a formal, machine-readable representation of knowledge. For example, Alice asks for the stock level and HDMI slot count, and Bob responds with precise numerical values.

This dialogue illustrates how agent-based systems can support decentralised decision-making and autonomous interaction in a supply chain context. By separating communication semantics (via KQML) from knowledge representation (via KIF), the system enables agents to collaborate effectively even in distributed environments.

Agent Dialogue (KQML and KIF)

Message 1: Alice → Bob (Query available stock)

(KQML
  :performative ask-one
  :sender Alice
  :receiver Bob
  :language KIF
  :ontology warehouse-inventory
  :content
    (available-stock
      (item-type "50-inch-television")))

Message 2: Bob → Alice (Respond with stock level)

(KQML
  :performative tell
  :sender Bob
  :receiver Alice
  :language KIF
  :ontology warehouse-inventory
  :content
    (stock-level
      (item-type "50-inch-television")
      (quantity 24)))

Message 3: Alice → Bob (Query HDMI slot details)

(KQML
  :performative ask-one
  :sender Alice
  :receiver Bob
  :language KIF
  :ontology product-specs
  :content
    (hdmi-slot-count
      (item-type "50-inch-television")))

Message 4: Bob → Alice (Respond with HDMI slot count)

(KQML
  :performative tell
  :sender Bob
  :receiver Alice
  :language KIF
  :ontology product-specs
  :content
    (hdmi-slot-count
      (item-type "50-inch-television")
      (count 3)))

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Agent Dialogue Table: Alice and Bob

Step	Sender → Receiver	KQML Performative	KIF Content (Summary)
1	Alice → Bob	ask-one	What is the available stock of 50-inch televisions?
2	Bob → Alice	tell	There are 24 units of 50-inch televisions in stock.
3	Alice → Bob	ask-one	How many HDMI slots do the 50-inch televisions have?
4	Bob → Alice	tell	The 50-inch televisions have 3 HDMI slots.

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