Keynote Speeches -- Declarative Technologies for Open Agent Systems and Beyond -- Knowledge Representation for Automated Reasoning -- Discovery of Processes and Their Interactions from Data and Domain Knowledge -- Multi-Agent Systems Design and Implementation -- Engaging the Dynamics of Trust in Computational Trust and Reputation Systems -- An Evaluation Method for Multi-Agent Systems -- Trust Estimation Using Contextual Fitness -- A Method for Improving Agent’s Autonomy -- Service Oriented Context-Aware Software Agents for Greater Efficiency -- Methods of Task Redistribution in Multiagent Systems -- REST-A and Intercycle Messages -- Negotiations and Social Issues -- Improving Multi-agent Negotiations Using Multi-Objective PSO Algorithm -- Including Notions of Fairness in Development of an Integrated Multi-agent Online Dispute Resolution Environment -- Role Monitoring in Open Agent Societies -- Trust and Distrust Prediction in Social Network with Combined Graphical and Review-Based Attributes -- Web Services and Semantic Web -- A Method for Reasoning about Complex Services within Geographic Information Systems -- Providing Web Service of Established Quality with the Use of HTTP Requests Scheduling Methods -- Three-Valued Paraconsistent Reasoning for Semantic Web Agents -- A Framework of an Agent-Based Personal Assistant for Internet Users -- Building Multiagent Environment for Military Decision Support Tools with Semantic Services -- Information Flow Based Specification of Data Integration Problem -- Cooperation, Coordination and Teamwork -- Cooperation of Agents in Manufacturing Systems -- Mitigating Human-Human Collaboration Problems Using Software Agents -- Team Formation and Optimization for Service Provisioning -- Self-adaptation Strategies to Favor Cooperation -- The Effects of Local Trust Cooperation in Multiagent Systems -- Using BDI-Agents with Coordination without Communication to Increase Lifetime, Preserving Autonomy and Flexibility in Wireless Sensor Networks -- Towards an Integrated Approach of Real-Time Coordination for Multi-agent Systems -- Agent-Based Modeling, Simulation and Decision Making -- The Influence of Call Graph Topology on the Dynamics of Telecommunication Markets -- Classifying Agent Behaviour through Relational Sequential Patterns -- Multi-agent Based Simulation of Animal Food Selective Behavior in a Pastoral System -- Movement Simulation and Management of Cooperating Objects in CGF Systems: A Case Study -- Simulating Collective Intelligence of the Communities of Practice Using Agent-Based Methods -- Using Perseus System for Modelling Epistemic Interactions -- Agent-Based Approach in Evacuation Modeling -- Multi-Agent Applications -- Core Non-emptiness Checking in Hedonic Games via Difference Logic -- Distributed Classification: Architecture and Cooperation Protocol in a Multi-agent System for E-Health -- Multidimensional Data Visualization Applied for User’s Questionnaire Data Quality Assessment -- Early Contention Notification for TCP Performance in Mobile Ad Hoc Networks -- Agent-Based Remote Conversation Support for People with Aphasia -- On the Effective Distribution of Knowledge Represented by Complementary Graphs -- Building Group Recommendations in E-Learning Systems -- Leader Election Based on Centrality and Connectivity Measurements in Ad Hoc Networks -- Concept of Analysing Spreading of an "Epidemics" by Means of a Multi-Agent Simulation -- A Multi-Agent System to Assist with Property Valuation Using Heterogeneous Ensembles of Fuzzy Models -- Performance Evaluation of Multiagent Systems for Power System Topology Verification.

This book constitutes the proceedings of the 4th KES International Symposium on Agent and Multi-Agent Systems, KES-AMSTA 2010, held in June 2010 in Gdynia, Poland. The discussed field is concerned with the development and analysis of AI-based problem-solving and control architectures for both single-agent and multiple-agent systems. Only 83 papers were selected for publication in both volumes which focus on topics such as: Multi-Agent Systems Design and Implementation, Negotiations and Social Issues, Web Services and Semantic Web, Cooperation, Coordination and Teamwork, Agent-Based Modeling, Simulation and Decision Making, Multi-Agent Applications, Management and e-Business, Mobile Agents and Robots, and Machine Learning.