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Transactional Agents转换代理

Transactional Agents转换代理

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作者: Khaled Nagi

出版社: 湖南文艺出版社

出版时间: 2002-02

版次: 1

ISBN: 3540430466 或 9783540430469

定价: 807.42

装帧: 平装

开本: 其他

纸张: 胶版纸

页数: 205页

分类: 外文古旧书>英文书>工程技术

The ever growing complexity of modern distributed information systems and the 　　difficulty in foreseeing all potential disturbances make the applicability of multi-agent systems（MAS) in this domain very appealing. Despite the many research efforts of the last decade, agent technology is slow to find its way into large-scale information-rich applications. This shortcoming can be largely attributed to the technical challenges facing the introduction of MAS to mLssion-critical core applications. The most pressing technical issue here is the lack of robustness in existing MAS architectures.

  This work enhances the robustness of MAS applied in the information systems domain through an underlying middleware; this middleware provides formal guarantees on the robustness of the system by itself and independently of the original structure of the MAS architecture.

  Much of today's progress in IT is due to interdisciplinary approaches - or to changing viewpoints on a particular problem. This monograph is an excellent example ot such an interdisciplinary approach that brings together database knowledge rarely concerned with agents, and agent techniques that have had little to do with database technology. 1 Introduction

　1.1 General

　1.2 Motivation of the Work

　1.3 Scope of the Work

　　1.3.1 Objectives

　　1.3.2 Approach

　　1.3.3 System Evaluation

　　1.4 Organization of the Thesis

2 Application Scenario

　2.1 Overview of the PPC Domain

　2.2 The Need for Multi-agent Systems in PPC

　2.3 The Scenario

　2.4 Sources of Disturbances

　　2.4.1 Technical Disturbances

　　2.4.2 Operational Disturbances

　2.5 Conclusion

3 Overview of Agent Technology

　3.1 Definitions

　　3.1.1 What Is an Agent?

　　3.1.2 Agent Properties

　　3.1.3 Formal Representation of Agents

　　3.1.4 Layered Agents

　　3.1.5 Agent Taxonomy

　3.2 Planning in Agents

　　3.2.1 Planning Theory

　　3.2.2 Practical Aspects of Planning

　　3.2.3 Distributed Planning

　　3.2.4 Planning and Execution

　3.3 Robustness of MAS in IS Domains

　　3.3.1 RETSINA

　　3.3.2 InfoSleuth

　　3.3.3 Social Abstractions Using Agents

　　3.3.4 Approaches for Robustness

　3.4 Agent Standardization Efforts

　　3.4.1 The Knowledge Sharing Effort

　　3.4.2 The Foundation of Intelligent Physical Agents

　3.5 Conclusion

4 Overview of Transaction Processing

　4.1 Transactions

　4.2 Robustness of Transactions

　4.3 Serializability

　　4.3.1 Theory

　　4.3.2 Equivalence of Histories and Schedules

　　4.3.3 Serialization Graph

　4.4 Recoverability

　　4.4.1 Centralized Recovery

　　4.4.2 Distributed Recovery

　　4.4.3 Semantic-B ased Recovery

　4.5 Multi-databases

　　4.5.1 Serializability in Multi-databases

　　4.5.2 Recoverability in Multi-databases

　4.6 Advanced Transaction Models

　4.7 ACTA

　4.8 Sagas

　4.9 Flex

　4.l0 ConTracts

　4.11 Nested Transaction Models

　　4.l1.1 Closed-Nested Transaction Model

　　4.11.2 Multi-level Transaction Model

　　4.11.3 Open-Nested Transaction Model

　4.12 Interactions

　4.13 Conclusion

5 Proposed Approach: Transactional Agents

　5.1 Problem Statement and Objectives

　5.2 Proposed Approach: Transactional Agents

　5.3 System Architecture

　　5.3.1 A Generic MAS Architecture

　　5.3.2 A Robust MAS Architecture

　5.4 The Planning Agent

　5.5 The Execution Agent

　5.6 The Action Repository

　5.7 Integration with the FIPA Platform

　5.8 Conclusion

6 The Agent Transaction Model

　6.1 The Need for Extending the Open-Nested Transaction Model

　6.2 The Transaction Tree

　　6.2.1 The Tree Structure

　　6.2.2 Node States

    ……

7 Robustness Guaranteeing Mechanisms

8 Interacting with the Execution Agent

9 Simulation Study

10 Simulation Results

11 Summary and Future Work

Appendix I: Agent Implementation Prototype

References

Subject Index
内容简介:
The ever growing complexity of modern distributed information systems and the 　　difficulty in foreseeing all potential disturbances make the applicability of multi-agent systems（MAS) in this domain very appealing. Despite the many research efforts of the last decade, agent technology is slow to find its way into large-scale information-rich applications. This shortcoming can be largely attributed to the technical challenges facing the introduction of MAS to mLssion-critical core applications. The most pressing technical issue here is the lack of robustness in existing MAS architectures.

This work enhances the robustness of MAS applied in the information systems domain through an underlying middleware; this middleware provides formal guarantees on the robustness of the system by itself and independently of the original structure of the MAS architecture.

Much of today's progress in IT is due to interdisciplinary approaches - or to changing viewpoints on a particular problem. This monograph is an excellent example ot such an interdisciplinary approach that brings together database knowledge rarely concerned with agents, and agent techniques that have had little to do with database technology.
目录:
1 Introduction

　1.1 General

　1.2 Motivation of the Work

　1.3 Scope of the Work

　　1.3.1 Objectives

　　1.3.2 Approach

　　1.3.3 System Evaluation

　　1.4 Organization of the Thesis

2 Application Scenario

　2.1 Overview of the PPC Domain

　2.2 The Need for Multi-agent Systems in PPC

　2.3 The Scenario

　2.4 Sources of Disturbances

　　2.4.1 Technical Disturbances

　　2.4.2 Operational Disturbances

　2.5 Conclusion

3 Overview of Agent Technology

　3.1 Definitions

　　3.1.1 What Is an Agent?

　　3.1.2 Agent Properties

　　3.1.3 Formal Representation of Agents

　　3.1.4 Layered Agents

　　3.1.5 Agent Taxonomy

　3.2 Planning in Agents

　　3.2.1 Planning Theory

　　3.2.2 Practical Aspects of Planning

　　3.2.3 Distributed Planning

　　3.2.4 Planning and Execution

　3.3 Robustness of MAS in IS Domains

　　3.3.1 RETSINA

　　3.3.2 InfoSleuth

　　3.3.3 Social Abstractions Using Agents

　　3.3.4 Approaches for Robustness

　3.4 Agent Standardization Efforts

　　3.4.1 The Knowledge Sharing Effort

　　3.4.2 The Foundation of Intelligent Physical Agents

　3.5 Conclusion

4 Overview of Transaction Processing

　4.1 Transactions

　4.2 Robustness of Transactions

　4.3 Serializability

　　4.3.1 Theory

　　4.3.2 Equivalence of Histories and Schedules

　　4.3.3 Serialization Graph

　4.4 Recoverability

　　4.4.1 Centralized Recovery

　　4.4.2 Distributed Recovery

　　4.4.3 Semantic-B ased Recovery

　4.5 Multi-databases

　　4.5.1 Serializability in Multi-databases

　　4.5.2 Recoverability in Multi-databases

　4.6 Advanced Transaction Models

　4.7 ACTA

　4.8 Sagas

　4.9 Flex

　4.l0 ConTracts

　4.11 Nested Transaction Models

　　4.l1.1 Closed-Nested Transaction Model

　　4.11.2 Multi-level Transaction Model

　　4.11.3 Open-Nested Transaction Model

　4.12 Interactions

　4.13 Conclusion

5 Proposed Approach: Transactional Agents

　5.1 Problem Statement and Objectives

　5.2 Proposed Approach: Transactional Agents

　5.3 System Architecture

　　5.3.1 A Generic MAS Architecture

　　5.3.2 A Robust MAS Architecture

　5.4 The Planning Agent

　5.5 The Execution Agent

　5.6 The Action Repository

　5.7 Integration with the FIPA Platform

　5.8 Conclusion

6 The Agent Transaction Model

　6.1 The Need for Extending the Open-Nested Transaction Model

　6.2 The Transaction Tree

　　6.2.1 The Tree Structure

　　6.2.2 Node States

……

7 Robustness Guaranteeing Mechanisms

8 Interacting with the Execution Agent

9 Simulation Study

10 Simulation Results

11 Summary and Future Work

Appendix I: Agent Implementation Prototype

References

Subject Index

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