Analysis, Design, and Implementation of an Agent Analysis, Design, and Implementation of an Agent BasedBased

Management Information SystemManagement Information System

Supervisor: Dr. RazzaziSupervisor: Dr. Razzazi

Advisor: Dr. RahmatiAdvisor: Dr. Rahmati

By: Leila HomaeianBy: Leila Homaeian

Summer 1381Summer 1381

22

General ConceptsGeneral Concepts

• Agent DefinitionAgent Definition

• OntologyOntology

• Agent Characteristics of JavaAgent Characteristics of Java

33

Agent DefinitionAgent Definition

• ReactiveReactive• AutonomousAutonomous• Goal-DrivenGoal-Driven• Temporally ContinuousTemporally Continuous

Orthogonal PropertiesOrthogonal Properties

• CommunicativeCommunicative• MobileMobile• LearningLearning• BelievableBelievable

44

Seven Reasons for Using Seven Reasons for Using mobile agents mobile agents • Reducing the Network LoadReducing the Network Load

• Overcoming Network LatencyOvercoming Network Latency

• Encapsulating Encapsulating ProtocolsProtocols

• Executing Asynchronously and AutonomouslyExecuting Asynchronously and Autonomously

• Adapting DynamicallyAdapting Dynamically

• Naturally HeterogeneousNaturally Heterogeneous

• Robust and Fault TolerantRobust and Fault Tolerant

55

OntologyOntology

• What is an Ontology?What is an Ontology?

• A Simple Knowledge-Engineering MethodolA Simple Knowledge-Engineering Methodologyogy

66

A Simple Knowledge-A Simple Knowledge-EngineeringEngineering Methodology Methodology• Determining the Domain and Scope of the Determining the Domain and Scope of the

OntologyOntology

• Considering Reusing Existing OntologiesConsidering Reusing Existing Ontologies

• Enumerating Important Terms in the Enumerating Important Terms in the OntologyOntology

• Defining the Classes and the Class HierarchyDefining the Classes and the Class Hierarchy

• Defining the Properties of Classes- SlotsDefining the Properties of Classes- Slots

• Defining the Facets of the SlotsDefining the Facets of the Slots

• Creating InstancesCreating Instances

77

Agent Characteristics of JavaAgent Characteristics of Java

• Platform IndependentPlatform Independent

• Secure ExecutionSecure Execution

• Dynamic Class LoadingDynamic Class Loading

• Multithread ProgrammingMultithread Programming

• Object SerializationObject Serialization

• ReflectionReflection

88

Project DescriptionProject Description

• System IdentificationSystem Identification

• Methodology for Analysis and Design: MESSAGEMethodology for Analysis and Design: MESSAGE

Methodology for Engineering Systems of Software AGEntsMethodology for Engineering Systems of Software AGEnts

Case Tool: MetaEdit+Case Tool: MetaEdit+

• Tool for Implementation: ASDKTool for Implementation: ASDK

Aglets Software Development KitAglets Software Development Kit

99

System IdentificationSystem Identification

• Requirements IdentificationRequirements Identification

• Components within the SystemComponents within the System

• How the Functionality of the System is How the Functionality of the System is done?done?

1010

Analysis and Design of the Analysis and Design of the Registrar office Registrar office

• Main MESSAGE ConceptsMain MESSAGE Concepts

• Analysis Model ViewsAnalysis Model Views

• Analysis ProcessAnalysis Process

• Analysis DiagramsAnalysis Diagrams

• Design ProcessDesign Process

1111

Main MESSAGE ConceptsMain MESSAGE Concepts

• FoundationsFoundations

• Knowledge-level ConceptsKnowledge-level Concepts

1212

Knowledge-level ConceptsKnowledge-level Concepts

• Concrete EntitiesConcrete Entities

• ActivitiesActivities

• Mental State EntitieMental State Entitiess

1313

Concrete EntitiesConcrete Entities

• AgentAgent

• OrganizationOrganization

• RoleRole

• ResourceResource

1414

ActivitiesActivities

• TaskTask

• Interaction and Interaction ProtocolInteraction and Interaction Protocol

1515

Mental State EntitiesMental State Entities

• GoalGoal

• Information EntityInformation Entity

• MessageMessage

1616

Analysis Model ViewsAnalysis Model Views

• Definition of ViewsDefinition of Views

• Consistency between the Consistency between the ViewsViews

1717

Definition of ViewsDefinition of Views

• Organization ViewOrganization View

• Goal/Task ViewGoal/Task View

• Agent/Role ViewAgent/Role View

• Interaction ViewInteraction View

• Domain ViewDomain View

1818

Analysis ProcessAnalysis Process• IntroductionIntroduction

• Inputs to Modelling ProcessInputs to Modelling Process

• Overview of Modelling ProcessOverview of Modelling Process

1919

Introduction to Analysis Introduction to Analysis ProcessProcess• Refinement ApproachRefinement Approach

• Analysis Refinement StrategiesAnalysis Refinement Strategies

2020

Components within the Components within the systemsystem• Interface AgentInterface Agent

Student RoleStudent Role Administrator RoleAdministrator Role

• Broker AgentBroker Agent Broker RoleBroker Role

• Staff AgentStaff Agent Staff RoleStaff Role

2121

Analysis DiagramsAnalysis Diagrams

• MESSAGE NotationMESSAGE Notationss

• Level 0 AnalysisLevel 0 Analysis

• Level 1 AnalysisLevel 1 Analysis

2222

MESSAGE NotationsMESSAGE Notations

• Symbol SummarySymbol Summary

• Usage of RelationsUsage of Relations

2323

Symbol SummarySymbol Summary

2424

Usage of RelationsUsage of Relations Implication AssignmentImplication Assignment

DataFlowDataFlow

Assignment

Wish Play Performance Provision Participation

2525

Level 0 AnalysisLevel 0 Analysis

• Organization ViewOrganization View

• Goal/Task ViewGoal/Task View

2626

Organization ViewOrganization ViewLevel 0 Organization Diagram (Structural Relationships)Level 0 Organization Diagram (Structural Relationships)

Level 0 Organization Diagram (Acquaintance Relationships)Level 0 Organization Diagram (Acquaintance Relationships)

2727

Goal/Task ViewGoal/Task ViewLevel 0 Goal/Task Implication Diagram Level 0 Workflow D. of Receiving Level 0 Goal/Task Implication Diagram Level 0 Workflow D. of Receiving

InformationInformation

Level 0 Workflow D. of Delivering Information Level 0 Workflow D. of Replacing Level 0 Workflow D. of Delivering Information Level 0 Workflow D. of Replacing InformationInformation

2828

Goal/Task ViewGoal/Task ViewLevel 0 Workflow D. of Receiving Question Level 0 workflow D. of Understanding Level 0 Workflow D. of Receiving Question Level 0 workflow D. of Understanding

QuestionQuestion

& Designating the Staff& Designating the Staff

Level 0 Workflow D. of Forwarding Level 0 Workflow D. of Forwarding

Student to StaffStudent to Staff

2929

Goal/Task ViewGoal/Task View Level 0 Workflow D. of Finding AnswerLevel 0 Workflow D. of Finding Answer

Level 0 Workflow D. of Offering Answer to End UserLevel 0 Workflow D. of Offering Answer to End User

3030

Level 1 AnalysisLevel 1 Analysis

• Organization ViewOrganization View

• Agent/Role ViewAgent/Role View

• Interaction ViewInteraction View

• Domain ViewDomain View

3131

Organization ViewOrganization View

Level 1 Organization D. (Acquaintance Relationship)Level 1 Organization D. (Acquaintance Relationship)

3232

Agent/Role ViewAgent/Role View

Level 1 Delegation Structure DiagramLevel 1 Delegation Structure Diagram

3333

Interaction viewInteraction viewInteraction D. (Student & broker) Interaction D. (Student & Staff)Interaction D. (Student & broker) Interaction D. (Student & Staff)

Interaction D. (Administrator & Staff)Interaction D. (Administrator & Staff)

3434

Domain ViewDomain View

Domain Information DiagramDomain Information Diagram date

month : Integerday : Integeryear : Integer

Term

startDate : datefinalDate : datedateOf_form5 : datedateOf_omission_addition : datedateOf_registeration : datehave_preRegisteration : BooleancoursesOf_semester : StringmidExam : examfinalExam : exam

exam

startDate : datefinalDate : date has

has

student

ID : IntegerfirstName : StringlastName : Stringcourse : course_of_education

pass_term()

term of student

startDate : dateaverage : Doublepassed_cources : Stringfailed_cources : String$ failing_cnd : String$ allowed_absence : String

course_of_education

allowed_failings : String<<array>> terms : Term

date

month : Integerday : Integeryear : Integer

1n

has

n

1

1n

pass1n

is composed of

1

n

pass

1

1

has

1

n

3535

Design ProcessDesign Process

• Agent-Platform Oriented ApproachAgent-Platform Oriented Approach• Architecture Driven ApproachArchitecture Driven Approach

• Design Activities Design Activities

3636

Design ActivitiesDesign Activities

• Refining the Analysis EntitiesRefining the Analysis Entities

• Selecting the Agent ArchitectureSelecting the Agent Architecture

• Structuring the Results according to the Organization Structuring the Results according to the Organization ViewView

Organization View in the AnalysisOrganization View in the Analysis Organization View in the DesignOrganization View in the Design

• Fulfilling the ArchitectureFulfilling the Architecture Identifying components for External BehaviourIdentifying components for External Behaviour Fulfilling the Domain LayerFulfilling the Domain Layer Fulfilling the Decision and Management LayerFulfilling the Decision and Management Layer

3737

Refining the Analysis EntitiesRefining the Analysis Entities Interaction between Student & Broker Student & StaffInteraction between Student & Broker Student & Staff

Staff & AdministratorStaff & Administrator

receive question

Broker

send error message send keywords & staff's address

send result<<include>><<include>>

send question

receive result

Student

receive keywords

send answer

Staffsend keywords

receive answer

Student

send new informationAdministrator

replace new information

Staff

receive new information

Student Broker

send question

designate staffsend result

Studentsend keywords

Staff

extract answersend answer

Administrator Staff

send new information

replaceInfo

3838

Identifying components for Identifying components for ExternalExternal Behaviour Behaviour • Generate InterfacesGenerate Interfaces

• Generate ProxiesGenerate Proxies

• Generate serversGenerate servers

• Generate Session EntitiesGenerate Session Entities

3939

Identifying components for External Identifying components for External BehaviourBehaviourResource Layer for Interface agent Resource Layer for Interface agent Broker agentBroker agent

Staff AgentStaff Agent

Resource Layer

Interface Agent<<agent>>

Administrator

sendOneWayMessage()goTo()

<<Interface>>

StudentProxy

sendOneWayMessage()

BrokerServer

StaffServer

Broker

handleMessage()split()designateStaff()delMark()

<<Interface>>

Staff

handleMessage()replaceInfo()findAnswer()

<<Interface>>

AdministratorServer

BrokerProxy

sendOnewayMessage()

StaffProxy

sendOneWayMessage()

StudentServer

Student

goTo()handleMessage()

<<Interface>>

Resource Layer

Broker Agent<<agent>>

StudentProxy

sendOneWayMessage()

BrokerServer

Broker

handleMessage()split()designateStaff()delMark()

<<Interface>>BrokerProxy

sendOnewayMessage()

StudentServer

Student

goTo()handleMessage()

<<Interface>>

Resource Layer

Staff Agent<<agent>>

Administrator

sendOneWayMessage()goTo()

<<Interface>>

StudentProxy

sendOneWayMessage()StaffServer

Staff

handleMessage()replaceInfo()findAnswer()

<<Interface>>

AdministratorServer

StaffProxy

sendOneWayMessage()

StudentServer

Student

goTo()handleMessage()

<<Interface>>

4040

Fulfilling the Domain LayerFulfilling the Domain Layer

• Domain Entity Mangers Domain Entity Mangers

• TasksTasksdate

month : Integerday : Integeryear : Integer

exam

startDate : datefinalDate : date

term of student

startDate : dateaverage : Doublepassed_cources : Stringfailed_cources : String$ failing_cnd : String$ allowed_absence : String

date

month : Integerday : Integeryear : Integer

course_of_education

allowed_failings : String<<array>> terms : Term

student

ID : IntegerfirstName : StringlastName : Stringcourse : course_of_education

pass_term()

has

1

n

is composed of

1

n

pass1n

pass

1

1

Staff1

replaceInfo()findAnswer()

Staff2

replaceInfo()findAnswer()

Term

startDate : datefinalDate : datedateOf_form5 : datedateOf_omission_addition : datedateOf_registeration : datehave_preRegisteration : BooleancoursesOf_semester : StringmidExam : examfinalExam : exam

1n

has

n

1

has

1n

has

4141

ImplementationImplementation

• Java Aglet API (J-AAPI)Java Aglet API (J-AAPI) and Aglet Object Modeland Aglet Object Model

• Aglet Event ModelAglet Event Model

• Aglet APIAglet API

• Implementation Description of Registrar OfficeImplementation Description of Registrar Office

4242

Java Aglet API (J-AAPI)Java Aglet API (J-AAPI) and Aglet and Aglet Object ModelObject ModelMain ElementsMain Elements

– AgletAglet– ContextContext– ProxyProxy– MessageMessage– ItineraryItinerary– IdentifierIdentifier

Supported BehaviourSupported Behaviour

– CreationCreation– CloningCloning– DispatchDispatch– RetractRetract– Activate/DeactivateActivate/Deactivate– DisposeDispose– MessagingMessaging

4343

Aglet Event ModelAglet Event Model

• Clone ListenerClone Listener

• Mobility ListenerMobility Listener

• Persistence ListenerPersistence Listener

4444

Aglet APIAglet API

• Aglet classAglet class

• AgletProxy InterfaceAgletProxy Interface

• Aglet ContextAglet Context

• Message ClassMessage Class

4545

Implementation Description of Implementation Description of Registrar OfficeRegistrar Office

• Interface AgentInterface Agent

• Broker AgentBroker Agent

• Staff AgentStaff Agent

4646

RefrencesRefrences1. Danny B. Lang, Mitsuru Oshima, 1. Danny B. Lang, Mitsuru Oshima, Mobile Agents with Java: The Aglet APIMobile Agents with Java: The Aglet API, 1998 , 1998 www.moe-lange.com/danny/wwwj.pdfwww.moe-lange.com/danny/wwwj.pdf. .

2. Danny B. Lang, Mitsuru Oshima, Gunter Karjoth, Kazuya Kosaka, 2. Danny B. Lang, Mitsuru Oshima, Gunter Karjoth, Kazuya Kosaka, Aglets: Programming Mobile Agents in JavaAglets: Programming Mobile Agents in Java,1996,1996 http://www.http://www.trltrl..ibmibm.co..co.jpjp/aglets/aglets..

3. 3. WWW.WWW.sourceforgesourceforge.net/projects/aglets.net/projects/aglets..

4. Giovanni Caire, Francisco Leal, Paulo Chainho, Richards Evans, Francisco Garijo, Jorge Gomez, Juan Pavon, Paul Kearney, Jamie Stark, 4. Giovanni Caire, Francisco Leal, Paulo Chainho, Richards Evans, Francisco Garijo, Jorge Gomez, Juan Pavon, Paul Kearney, Jamie Stark, Philippe Massonet, Philippe Massonet, Agent Oriented Analysis using MESSAGE/UMLAgent Oriented Analysis using MESSAGE/UML, 2000 , 2000

http://www.http://www.cediticediti.be/download/software_agent..be/download/software_agent.pdfpdf . .

5. MESSAGE: Methodology for Engineering Systems of Software 5. MESSAGE: Methodology for Engineering Systems of Software Agents:Agents: Methodology for agent-Oriented Software agents, Methodology for agent-Oriented Software agents, www.www.eurescomeurescom.de/projects/p907.de/projects/p907, September 2001., September 2001.

6. MESSAGE: Methodology for Engineering Systems of Software Agents, 6. MESSAGE: Methodology for Engineering Systems of Software Agents, Recommendations on Supporting Case Tools, Recommendations on Supporting Case Tools, www.www.eurescomeurescom.de/projects/p907.de/projects/p907..

7. Natalya F. Noy, Deborah L. McGuinness, 7. Natalya F. Noy, Deborah L. McGuinness, Ontology Development 101:Ontology Development 101: A Guide to Crating Your First OntologyA Guide to Crating Your First Ontology http://protege.stanford.edu/publications/ontology_development/ontology101-noy-mcguinness.htmlhttp://protege.stanford.edu/publications/ontology_development/ontology101-noy-mcguinness.html..

8. Joseph P. Bigus, Jennifer P. Bigus, 8. Joseph P. Bigus, Jennifer P. Bigus, Constructing Intelligent Agents using JavaConstructing Intelligent Agents using Java, 2nd Edition, JOHN WIELY & SONS INC, 2001. , 2nd Edition, JOHN WIELY & SONS INC, 2001.

9. Federico Bergenti, Agostino Poggi,9. Federico Bergenti, Agostino Poggi, Exploiting UML in the Design of Multi-Agent Systems Exploiting UML in the Design of Multi-Agent Systems, 1999., 1999.

10. Amund Tveit, 10. Amund Tveit, A Survey of Agent-Oriented Software EngineeringA Survey of Agent-Oriented Software Engineering, May 2001. , May 2001. www.jfipa.org/publications/AgentOrientedSoftwareEngineeringwww.jfipa.org/publications/AgentOrientedSoftwareEngineering.. 11. James J. Odell, H. Van Dyke Parunak, Bernhard Bauer, 11. James J. Odell, H. Van Dyke Parunak, Bernhard Bauer, Representing Agent Interaction Protocols in UML. Representing Agent Interaction Protocols in UML.

www.jamesodell.com/Rep_Agent_Protocols.pdfwww.jamesodell.com/Rep_Agent_Protocols.pdf..

1212. . Cay S. Horstmann, Gray Cornell, Cay S. Horstmann, Gray Cornell, Core JavaCore Java Volume I- Volume I- Fundamentals 1999, Sun Microsystems.Fundamentals 1999, Sun Microsystems.

13. Choge Xu, Dobgin Tao, 13. Choge Xu, Dobgin Tao, Building Distributed Application with Aglet.Building Distributed Application with Aglet. www.cs.duke.edu/~chong/aglet/www.cs.duke.edu/~chong/aglet/

14. 14. Alex L. G. Alex L. G. HayzeldenHayzelden, Rachel Bourne, , Rachel Bourne, Agent Technology for Communication InfrastructuresAgent Technology for Communication Infrastructures, John Wiley & Sons, 1st edition, January 31, , John Wiley & Sons, 1st edition, January 31, 2001.2001.

15. Hans-Erik Eriksson, Magnus Penker, 15. Hans-Erik Eriksson, Magnus Penker, Business Modeling with UMLBusiness Modeling with UML, John Wiley & Sons, 2000. , John Wiley & Sons, 2000.