The success of the World Wide Web depends on the ability of users to store, p- cess and retrieve digital information regardless of distance boundaries, languages and domains of knowledge. The universality and ?exibility of the World Wide Web have also enabled the rapid growth of a variety of new services and applications based on human-machine interaction. The semantics of exchanged information and services should be useful not only for human to human communications, but also in that machines would be able to understand and automatically process web content. Semanticsgive well-de?nedmeaningto web content and enable computersand p- ple to work in cooperation. Today, the crucial challenge becomes the development of languages to express information in a machine processable format. Now more than ever, new advanced techniques and intelligent approaches are required to tra- form the Web into a universal reasoning and computing machine. Web intelligence attempts to deal with this challenge by exploiting information technologies and - ti?cial intelligence approaches to design the next generation of web-empowered systems and services.

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Editorial Preface1. The Dilated Triple2. Semantic Web Technologies and Artificial Neural Networks for Intelligent Web Knowledge Source Discovery3. Computing Similarity of Semantic Web Services in Semantic Nets with Multiple Concept Relations4. General-Purpose Computing on a Semantic Network Substrate5. Agent Technology meets the Semantic Web: Interoperability and Communication Issues6. Mining of Semantic Image Content Using Collective Web Intelligence7. Suited Support for Distributed Web Intelligence Cooperative Work8. Web services and Software Agents for Tailorable Groupware Design9. Toward Distributed Knowledge Discovery on Grid systems10. Metamodel of ontology learning from text11. An Analysis of Constructed Categories for Textual Classification using Fuzzy Similarity and Agglomerative Hierarchical Methods12. Emergent XML mining: Discovering an efficient mapping from XML instances to relational schemas13. XML based information systems and formal semantics of programming languages14. Modeling and Testing of Web Based Systems15. Web-Based Support By Thin-Client Co-Browsing16. NetPay Micro-payment Protocols for three Networks17. Enforcing Honesty in Fair Exchange Protocols