FOUNDATION FOR INTELLIGENT PHYSICAL AGENTS

 

 

FIPA Inform Ref Communicative Act Specification

 

Document title

FIPA Inform Ref Communicative Act Specification

Document number

DC00048B

Document source

FIPA TC C

Document status

Deprecated

Date of this status

2001/08/10

Supersedes

None

Contact

fab@fipa.org

Change history

2000/10/16

Deprecated by FIPA00037

2001/08/10

Line numbering added

 

 

 

 

 

 

 

 

 

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 17countries 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 Inform Ref2

3 References. 3


1         Scope

This document specifies the Inform Ref communicative act that is compliant to [FIPA00037] requirements.

 

 


2         Inform Ref

Summary

A macro action for sender to inform the receiver the object which corresponds to a descriptor, for example, a name.

Content

An object description (a referential expression).

Description

The inform-ref macro action allows the sender to inform the receiver some object that the sender believes corresponds to a descriptor, such as a name or other identifying description.

 

Inform-ref is a macro action, since it corresponds to a (possibly infinite) disjunction of inform acts (see [FIPA00046]), each of which informs the receiver that the object corresponding to name is x for some given x. For example, an agent can plan an inform-ref of the current time to agent j, and then perform the act inform j that the time is 10.45.

 

The agent performing the act should believe that the object or set of objects corresponding to the reference expression is the one supplied, and should not believe that the receiver of the act already knows which object or set of objects corresponds to the reference expression. The agent may elect to send a refuse message (see [FIPA00055]) if it is unable to establish the preconditions of the act.

Formal Model

<i, inform-ref(j, Ref x d(x))>

<i, Inform(j, Ref x d(x) = r1)> | ... | (<i, Inform(j, Ref x d(x) = rk)>

FP: Brefi Ref x d(x) Bi(Brefj Ref x d(x) Urefj Ref x d(x))
RE: Bref
j Ref x d(x)

 

Note that Ref x d(x)is one of the referential expressions: ix d(x), any x d(x) or all x d(x).

 

Inform-ref represents an unbounded, possibly infinite set of possible courses of action, in which i informs j of the referent of x.

Example

Agent i requests j to tell it the current Prime Minister of the United Kingdom.

 

(request
:sender i
:receiver j
:content
(inform-ref
:sender j
:receiver i
:content

(iota ?x (UKPrimeMinister ?x))
:ontology world-politics
:language FIPA-SL)
:reply-with query0
:language FIPA-SL)

 

Agent j replies:

 

(inform
:sender j
:receiver i
:content

(= (iota ?x (UKPrimeMinister ?x)) "Tony Blair")
:ontology world-politics
:in-reply-to query0)

 

Note that a standard abbreviation for the request (see [FIPA00057]) of inform-ref used in this example is the act query-ref (see [FIPA00054]).


3         References

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

[FIPA00046] FIPA Inform Communicative Act Specification. Foundation for Intelligent Physical Agents, 2000. http://www.fipa.org/specs/fipa00046/

[FIPA00054] FIPA Query Ref Communicative Act Specification. Foundation for Intelligent Physical Agents, 2000. http://www.fipa.org/specs/fipa00054/

[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/