A context-aware normative structure in MAS

(1)

Faculty of Technology, Policy and Management

A Context-aware

Normative Structure in MAS

Contact: Jie Jiang (jie.jiang@tudelft.nl)

Jaffalaan 5, 2628BX, Delft, The Netherlands

Jie Jiang Huib Aldewereld Virginia Dignum Yao-Hua Tan

TPM, TU Delft, The Netherlands

Motivation

Solution

Conclusions

The proposed normative structure

Verification: Norm net mapping to CPN

• Norm

n

= (

role

,

deontic

,

action

,

condition

). • Norm net

NN

= (

c

,

NS

) where

•

context

c

is an abstraction of the application domain of

NN

determined by situational variables related to individuality, activity, time, location, relation, etc.,

•

NS

=

n

, or

NS

= AND(

NS

_i,

NS

_j), or

NS

= OR(

NS

_i,

NS

_j), or

NS

= OE(

NS

_i,

NS

_j).

• A norm net

NN’

= (

context’

,

NS’

) is a contextualization of another norm net

NN

= (

context

,

NS

) if their ontologies are unified and

context’

context

.

Contextualization Operationalization

…

Abstract Concrete

• Norms are not independent with each other.

• Norms are applied in a specific domain determined by the values of related situational variables.

• Norms are not formed at a single level of abstraction.

Key Concepts

∩

(n₃) [role : The certified exporter],

[deontic : should],

[action : offers guarantees to verify the originating status of the products], [condition : irrespective of the value of the products concerned].

Or Else (OE)

(n₄) [role : The customs authorities],

[deontic : should],

[action : withdraw the authorization],

[condition : when the certified exporter no longer offers the guarantees].

• captures the interrelationships between norms.

• captures the institutional contexts of norms.

• provides a norm net contextualization process.

• provides a mapping of norm nets to CPNs.

Operational norm net

Abstract norm net

Contextual

norm net Contextual _{norm net}

Operational norm net

NN1

<c1: Origin of goods in the EU>

NN11 <c11: Non-preferential origin in the EU> NN12 <c12: Preferential origin in the EU> NN111

<c111: Certain agricultural products subject

to special import arrangements in the EU>

NN121

<c121: Beneficiary countries or territories to

which preferential tariff measures adopted unilaterally by the community in the EU>

Abstract norm net

Contextual norm nets

Contextualization Contextualization Contextualization Contextualization General Specific action1 [ condition1] timer₁ satisfied violated n1 action2 [ condition₂] timer2 satisfied violated n2 NS2 action3 [ condition3] timer3 satisfied violated n₃ action₄ [ condition4] timer4 satisfied violated n4 XOR NS3 satisfied satisfied AND Input Output NS1 Exporter Customs Importer Customs

Exporter: a company in China

Importer: a company in the Netherlands Customs: Dutch customs

initialization NS1 = AND (NS2, NS3) NS₂ = AND (n₁, n₂) NS₃ = OE (n₃, n₄) wait wait wait wait AND wait Customs AND