Offers a collection of papers, dealing with the aspects of knowledge-based systems (KBS) and verification and validation (V&V), presented at the Fifth European Symposium on Verification and Validation of Knowledge Based Systems and Components.

KBS First Prototype V&V Process Plan as a Way to Produce Reliable Requirements.- On Principles of Knowledge Validation.- Progressive Instantiation for the Logical Validation of Nonmonotonic KBs.- Computer Algebra based Verification and Knowledge Extraction in RBS. Application to Medical Fitness Criteria.- A Knowledge Based Tool to Validate and Verify an Aion Knowledge Base.- Constraints for Validation of Conceptual Graphs.- PRONTO - Ontology-based Evaluation of Knowledge Based Systems.- Formal Methods for the engineering and certification of safetycritical Knowledge Based Systems.- Design pattern for safety-critical knowledge-based systems.- Organising Knowledge Refinement Operators.- Validation and refinement versus revision.- Illustrating Knowledge Base Restructuring and Verification in a Real World Application.- Incorporating backtracking search with knowledge refinement.- Verification and validation of a multistrategy knowledge-based system.- Validation and Verification of Knowledge-Based Systems for Power System Control Centres.- A priori Verification of Product Models in Mechanical Design.- Verification of Business Processes for a Correspondence Handling Center Using CCS.- User Participation-based Software Certification.- Verification and Validation in Support for Software Certification Methods.- Validation, Verification and Integrity in Knowledge and Data Base Systems: Future Directions.- Intelligent Data and Knowledge Analysis and Verification; Towards a Taxonomy of Specific Problems.- Ontology-based Verification and Validation of Federated Database Systems.- Applicability of Conventional Software Verification and validation to Knowledge Based Components: A Qualitative Assessment.