The class ACLMessage implements an ACL message compliant to the FIPA 2000 "FIPA ACL Message Structure Specification" (fipa000061) specifications. All parameters are couples keyword: value.All keywords are private final String.All values can be set by using the methods set and can be read by using the methods get.. Warning: since JADE 3.1 an exception might be thrown during the serialization of

means of a standard set of pre-defined performatives which (sim- ilarly to FIPA ACL) are included as part of the message envelope. 5. The Interaction Protocol

Referring to Table 1, it can be seen that the syntax of the FIPA inform performative The performative parameter denotes the type of the communicative act of the ACL message as defied by FIPA00037. Note: The performative parameter is a required parameter of all ACL messages. Parameters: performative - An integer identifying the FIPA performative to be set to this FIPA performatives provide an outline for the existence and action of agents. Existing FIPA protocols have been described through Petri-nets but the timing aspect was not speciﬁed which was a limitation.

Fipa performative

Referring to Table 1, it can be seen that the syntax of the FIPA inform performative 5.2 FIPA ACL Message Structure FIPA ACL messages are standardized to ensure interoperability and to provide well-defined process. FIPA ACL messages contain various parameters based on the situations. Some of them are performative, sender, receiver and content. Among these, performative parameter should be compulsorily present. fetchai/fipa:1.0.0 protocol.

The FIPA ACL is based on speech act theory. Its syntax is defined by performatives parameterised by attribute value pairs, while its semantics is given in terms of

agree- The action of agreeing to perform a requestd action made by another agent. Agent will carry it out.

of all FIPA ACL performatives, and Prot would be the set of all FIPA ACL protocols, used for negotiations, calls-for-proposals, etc., for example: Note we include a null performative which is a 'do nothing' (no reply) performative (cf. silence as used in Smith et al. [1998]), and require an empty protocol

Keywords: speech act theory, performatives, communication facilitators . The normative aspect of signalling and the distinction between performative and focus is neither on the intentions of communicators (FIPA: http://www.fipa.org/, FIPA ACL Message Structure Specification according to the situation; the only parameter that is mandatory in all ACL messages is the performative, although it Performative = communicative verb used to distinguish between Performative: request/inform/enquire FIPA=Foundation for Intelligent Physical Agents. Computer Science Agent Communication FIPA Performatives CPSC 601. 68/ CPSC 599. 68 Rob Kremer Department. The entire class of performative commissive (an agent make a commitment to Performative.

4. FIPA FIPA performatives which include INFORM, AGREE, CALL FOR PROPOSAL, CANCEL, FAILURE, ACCEPT PROPOSAL, and 16. others 6. Taken together the set of performatives . In the former (the KQML way), the wrapper language has a specific achieve performative for achieving goals, as it does not assume the content language necessarily has this capability. In the latter case (the FIPA-ACL way), the achieve performative is pushed into the content language, thus eliminating the need for the same in the ACL. KQML VS FIPA ACL PERFORMATIVES KQML Performative Equivalent FIPA Performative Ask-if Query-if Deny Inform or disconfirm Insert, uninsert Inform, FIPA ACL Performatives Negotiation accept-proposal sender accepts proposal made by other agent cfp call for proposals; initiates negotiation between agents; content-parameter contains action (desired to be done by some other agent) (e.g.: „sell me car“) and condition (e.g.: „price < 1000$“) reject-proposal sender does not accept proposal The foundational features of multi-agent systems are communication and interaction with other agents. To achieve these features, agents have to transfer messages in the predefined In FIPA ACL there are some performatives, such as proposal, CFP and so on, for general agent negotiation processes, but they are not sufficient for our purposes.
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The ACL specification defines a set of 22 performatives and their meaning. FIPA.content: a thorn in the agent side • The only element that is mandatory is the performative , but most will also contain sender , receiver , and content elements. • If an agent does not recognize or is unable to process one or more of the elements or element values, it can reply with the appropriate not-understood 5.2 FIPA Performatives Plan, FIPA Performative, KQML Performative and Black-board.

However, the FIPA performatives is not a closed set, and the formal semantics enables Ž .
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constant identifying the FIPA performative See Also: Constant Field Values. UNKNOWN public static final int UNKNOWN constant identifying an unknown performative

2002. 2012-10-24 CPSC 662/568: Agent Communications Inform Summary The sender informs the receiver that a given proposition is true.

coming message such as sender, performative or ontology. FIPA specifies a set of standard interaction protocols such as FIPA-request,. FIPA-query, etc. that can

1 [< performative > sender : . 2 receiver: content : .

FIPA-query, etc. that can The performative ( ACLMessage.INFORM ) is one of the standard FIPA performatives.