Invited Talks -- Processing Preference Queries in Standard Database Systems -- Turkish Information Retrieval: Past Changes Future -- From On-Campus Project Organised Problem Based Learning to Facilitated Work Based Learning in Industry -- Innovative Information and Knowledge Infrastructures – How Do I Find What I Need? -- Information Representation and Exchange -- XMask: An Enabled XML Management System -- Validation of XML Documents: From UML Models to XML Schemas and XSLT Stylesheets -- A Novel Clustering-Based Approach to Schema Matching -- BFPkNN: An Efficient k-Nearest-Neighbor Search Algorithm for Historical Moving Object Trajectories -- Three-Level Object-Oriented Database Architecture Based on Virtual Updateable Views -- AEC Algorithm: A Heuristic Approach to Calculating Density-Based Clustering Eps Parameter -- Databases and Datawarehouses -- GeoCube, a Multidimensional Model and Navigation Operators Handling Complex Measures: Application in Spatial OLAP -- Hybrid Index for Spatio-temporal OLAP Operations -- Managing Evolution of Data Warehouses by Means of Nested Transactions -- Optimization of Queries Invoking Views by Query Tail Absorption -- Checking Violation Tolerance of Approaches to Database Integrity -- A Metadata Repository Model to Integrate Heterogeneous Databases of Hardware Dependent Legacy Systems -- Semantic Web and Ontologies -- Semantic Information Retrieval on the Web -- Contextual Ontologies -- Matchmaking of Semantic Web Services Using Semantic-Distance Information -- Ontology-Based Information Systems Development: The Problem of Automation of Information Processing Rules -- Data Mining and Knowledge Discovery -- Data Mining with Parallel Support Vector Machines for Classification -- Association-Rules Mining Based Broadcasting Approach for XML Data -- CSDTM A Cost Sensitive Decision Tree Based Method -- Comparative Analysis of Classification Methods for Protein Interaction Verification System -- Distributed Architecture for Association Rule Mining -- Information Retrieval and Knowledge Representation -- Automatic Lung Nodule Detection Using Template Matching -- MIGP: Medical Image Grid Platform Based on HL7 Grid Middleware -- Structural and Event Based Multimodal Video Data Modeling -- Chat Mining for Gender Prediction -- Integrated Expert Management Knowledge on OSI Network Management Objects -- Knowledge Integration in Information Systems Education Through an (Inter)active Platform of Analysis and Modelling Case Studies -- Knowledge Management in Different Software Development Approaches -- Architecture of Information Systems -- PMAP: Framework to Predicting Method Access Patterns for Materialized Methods -- An Architecture Design Process Using a Supportable Meta-architecture and Roundtrip Engineering -- Knowledge-Based Enterprise Modelling Framework -- A Network-Based Indexing Method for Trajectories of Moving Objects -- Adaptive Enumeration Strategies and Metabacktracks for Constraint Solving -- FORBAC: A Flexible Organisation and Role-Based Access Control Model for Secure Information Systems -- Distributed and Wireless Information Systems -- An Anycasting Protocol for Anonymous Access to a Group of Contents-Equivalent Servers in a Distributed System -- A Wireless Broadcast Generation Scheme Considering Data Access Frequencies -- Spreading Activation Model for Connectivity Based Clustering -- Personalized Fair Reputation Based Resource Allocation in Grid.

This volume contains the proceedings of the Fourth International Conference on Advances in Information Systems (ADVIS) held in Izmir, Turkey, October, 18-20, 2006. This is the fourth conference dedicated to the memory of Professor Esen Ozkarahan, who was one of the pioneers of database machine research and a founder of database systems in Turkey. The main goal of the conference is to bring together researchers from all around the world working in di?erent areas of information systems to share new ideas and represent their latest results. This time we received 120 submissions from 27 countries.The Program Committee selected 38 papers for presentation at the conference. The invited and accepted contributions covered the main research topics - lated to information systems such as information representation and exchange, databases and datawarehouses, Semantic Web and ontologies, data mining and knowledge discovery, information retrieval and knowledge engineering, archit- ture of information systems, and distributed and wireless information systems. All these topics were discussed in detail during the conference. The success of the conference was dependent on the hard work of a large numberofpeople.WegratefullyacknowledgethemembersoftheProgramC- mittee, who helped to coordinate the process of refereeing all submitted papers. We also thank all the other specialists and our additional referees, who reviewed the papers.