Cooperative Information Systems (CoopIS) 2004 International Conference -- CoopIS 2004 International Conference (International Conference on Cooperative Information Systems) PC Co-chairs’ Message -- Keynote -- Business Process Optimization -- Workflow/Process/Web Services, I -- Discovering Workflow Transactional Behavior from Event-Based Log -- A Flexible Mediation Process for Large Distributed Information Systems -- Exception Handling Through a Workflow -- Workflow/Process/Web Services, II -- A Flexible and Composite Schema Matching Algorithm -- Analysis, Transformation, and Improvements of ebXML Choreographies Based on Workflow Patterns -- The Notion of Business Process Revisited -- Workflow/Process/Web Services, III -- Disjoint and Overlapping Process Changes: Challenges, Solutions, Applications -- Untangling Unstructured Cyclic Flows – A Solution Based on Continuations -- Making Workflow Models Sound Using Petri Net Controller Synthesis -- Database Management/Transaction -- Concurrent Undo Operations in Collaborative Environments Using Operational Transformation -- Refresco: Improving Query Performance Through Freshness Control in a Database Cluster -- Automated Supervision of Data Production – Managing the Creation of Statistical Reports on Periodic Data -- Schema Integration/Agents -- Deriving Sub-schema Similarities from Semantically Heterogeneous XML Sources -- Supporting Similarity Operations Based on Approximate String Matching on the Web -- Managing Semantic Compensation in a Multi-agent System -- Modelling with Ubiquitous Agents a Web-Based Information System Accessed Through Mobile Devices -- Events -- A Meta-service for Event Notification -- Classification and Analysis of Distributed Event Filtering Algorithms -- P2P/Collaboration -- A Collaborative Model for Agricultural Supply Chains -- FairNet – How to Counter Free Riding in Peer-to-Peer Data Structures -- Supporting Collaborative Layouting in Word Processing -- A Reliable Content-Based Routing Protocol over Structured Peer-to-Peer Networks -- Applications, I -- Covering Your Back: Intelligent Virtual Agents in Humanitarian Missions Providing Mutual Support -- Dynamic Modelling of Demand Driven Value Networks -- An E-marketplace for Auctions and Negotiations in the Constructions Sector -- Applications, II -- Managing Changes to Engineering Products Through the Co-ordination of Human and Technical Activities -- Towards Automatic Deployment in eHome Systems: Description Language and Tool Support -- A Prototype of a Context-Based Architecture for Intelligent Home Environments -- Trust/Security/Contracts -- Trust-Aware Collaborative Filtering for Recommender Systems -- Service Graphs for Building Trust -- Detecting Violators of Multi-party Contracts -- Potpourri -- Leadership Maintenance in Group-Based Location Management Scheme -- TLS: A Tree-Based DHT Lookup Service for Highly Dynamic Networks -- Minimizing the Network Distance in Distributed Web Crawling -- Ontologies, DataBases, and Applications of Semantics (ODBASE) 2004 International Conference -- ODBASE 2004 International Conference (Ontologies, DataBases, and Applications of Semantics) PC Co-chairs’ Message -- Keynote -- Helping People (and Machines) Understanding Each Other: The Role of Formal Ontology -- Knowledge Extraction -- Automatic Initiation of an Ontology -- Knowledge Extraction from Classification Schemas -- Semantic Web in Practice -- Generation and Management of a Medical Ontology in a Semantic Web Retrieval System -- Semantic Web Based Content Enrichment and Knowledge Reuse in E-science -- The Role of Foundational Ontologies in Manufacturing Domain Applications -- Intellectual Property Rights Management Using a Semantic Web Information System -- Ontologies and IR -- Intelligent Retrieval of Digital Resources by Exploiting Their Semantic Context -- The Chrysostom Knowledge Base: An Ontology of Historical Interactions -- Text Simplification for Information-Seeking Applications -- Information Integration -- Integration of Integrity Constraints in Federated Schemata Based on Tight Constraining -- Modal Query Language for Databases with Partial Orders -- Composing Mappings Between Schemas Using a Reference Ontology -- Assisting Ontology Integration with Existing Thesauri.

sers: GADA, MOIS, WOSE, and INTEROP. We trust that their audiences will mutually productively and happily mingle with those of the main conferences. A special mention for 2004 is in order for the new Doctoral Symposium Workshop where three young post-doc researchers organized an original set-up and formula to bring PhD students together and allow them to submit their research proposals for selection. A limited number of the submissions and their approaches will be independently evaluated by a panel of senior experts at the conference, and presented by the students in front of a wider audience. These students also got free access to all other parts of the OTM program, and only paid a heavily discounted fee for the Doctoral Symposium itself (in fact their attendance is largely sponsored by the other participants!). If evaluated as s- cessful, it is the intention of the General Chairs to expand this model in future editionsoftheOTMconferencesandsodrawinanaudienceofyoungresearchers to the OnTheMove forum. All three main conferences and the associated workshops share the dist- buted aspects of modern computing systems, and the resulting application-pull created by the Internet and the so-called Semantic Web.