FOUNDATION FOR INTELLIGENT PHYSICAL AGENTS

 

 

FIPA Cancel Communicative Act Specification

 

Document title

FIPA Cancel Communicative Act Specification

Document number

DC00041A

Document source

FIPA TC C

Document status

Deprecated

Date of this status

2000/10/16

Supersedes

None

Contact

fab@fipa.org

Change history

2000/10/16

Deprecated by FIPA00037

 

 

 

 

 

 

 

 

 

 

 

2000 Foundation for Intelligent Physical Agents - http://www.fipa.org/

Geneva, Switzerland

Notice

Use of the technologies described in this specification may infringe patents, copyrights or other intellectual property rights of FIPA Members and non-members. Nothing in this specification should be construed as granting permission to use any of the technologies described. Anyone planning to make use of technology covered by the intellectual property rights of others should first obtain permission from the holder(s) of the rights. FIPA strongly encourages anyone implementing any part of this specification to determine first whether part(s) sought to be implemented are covered by the intellectual property of others, and, if so, to obtain appropriate licenses or other permission from the holder(s) of such intellectual property prior to implementation. This specification is subject to change without notice. Neither FIPA nor any of its Members accept any responsibility whatsoever for damages or liability, direct or consequential, which may result from the use of this specification.

Foreword

The Foundation for Intelligent Physical Agents (FIPA) is an international organization that is dedicated to promoting the industry of intelligent agents by openly developing specifications supporting interoperability among agents and agent-based applications. This occurs through open collaboration among its member organizations, which are companies and universities that are active in the field of agents. FIPA makes the results of its activities available to all interested parties and intends to contribute its results to the appropriate formal standards bodies.

The members of FIPA are individually and collectively committed to open competition in the development of agent-based applications, services and equipment. Membership in FIPA is open to any corporation and individual firm, partnership, governmental body or international organization without restriction. In particular, members are not bound to implement or use specific agent-based standards, recommendations and FIPA specifications by virtue of their participation in FIPA.

The FIPA specifications are developed through direct involvement of the FIPA membership. The status of a specification can be either Preliminary, Experimental, Standard, Deprecated or Obsolete. More detail about the process of specification may be found in the FIPA Procedures for Technical Work. A complete overview of the FIPA specifications and their current status may be found in the FIPA List of Specifications. A list of terms and abbreviations used in the FIPA specifications may be found in the FIPA Glossary.

FIPA is a non-profit association registered in Geneva, Switzerland. As of January 2000, the 56 members of FIPA represented 17 countries worldwide. Further information about FIPA as an organization, membership information, FIPA specifications and upcoming meetings may be found at http://www.fipa.org/.

Contents

1 Scope. 1

2 Cancel 2

3 References. 3


1         Scope

This document specifies the Cancel communicative act which is compliant to [FIPA00037] requirements.

 

 


2         Cancel

Summary

The action of cancelling some previously requested action (see [FIPA00057]) which has temporal extent, that is, it is not instantaneous.

Content

An action expression denoting the action to be cancelled.

Description

Cancel allows an agent to stop another agent from continuing to perform (or expecting to perform) an action which was previously requested. Note that the action that is the object of the act of cancellation should be believed by the sender to be ongoing or to be planned but not yet executed.

In most interaction protocols, attempting to cancel an action that has already been performed should result in a refuse message (see [FIPA00055]) being sent back to the originator of the request.

Formal Model

<i, cancel(j, a)>
<i, disconfirm(j, I
i Done(a))>
FP:
Ii Done(a) Bi (Bj Ii Done(a) Uj Ii Done(a))
RE: B
j Ii Done(a)

 

Cancel is the action of canceling any form of requested action. In other words, an agent i has requested an agent j to perform some action, possibly if some condition holds. This has the effect of i informing j that i has an intention. When i comes to drop its intention, it has to inform j that it no longer has this intention, that is, a disconfirm action (see [FIPA00044]).

Example

Agent j0 asks i to cancel a previous request-when act (see [FIPA00058]) by quoting the action:

(cancel
:sender j0
:receiver i
:content
(request-when :sender j ))


3         References

[FIPA00037] FIPA Communicative Act Library Specification. Foundation for Intelligent Physical Agents, 2000. http://www.fipa.org/specs/fipa00037/

[FIPA00044] FIPA Disconfirm Communicative Act Specification. Foundation for Intelligent Physical Agents, 2000. http://www.fipa.org/specs/fipa00044/

[FIPA00055] FIPA Refuse Communicative Act Specification. Foundation for Intelligent Physical Agents, 2000. http://www.fipa.org/specs/fipa00055/

[FIPA00057] FIPA Request Communicative Act Specification. Foundation for Intelligent Physical Agents, 2000. http://www.fipa.org/specs/fipa00057/

[FIPA00058] FIPA Request When Communicative Act Specification. Foundation for Intelligent Physical Agents, 2000. http://www.fipa.org/specs/fipa00058/