Invited Lectures -- Web Semantization – Design and Principles -- Next Generation SOA: Can SOA Survive Cloud Computing? -- A Dynamic Stochastic Model Applied to the Analysis of the Web User Behavior -- Regular Papers -- Using Wavelet and Multi-wavelet Transforms for Web Information Retrieval of Czech Language -- An Extensible Open-Source Framework for Social Network Analysis -- Automatic Web Document Restructuring Based on Visual Information Analysis -- Reasoning about Weighted Semantic User Profiles through Collective Confidence Analysis: A Fuzzy Evaluation -- Estimation of Boolean Factor Analysis Performance by Informational Gain -- The Usage of Genetic Algorithm in Clustering and Routing in Wireless Sensor Networks -- Automatic Topic Learning for Personalized Re-Ordering of Web Search Results -- Providing Private Recommendations on Personal Social Networks -- Differential Evolution for Scheduling Independent Tasks on Heterogeneous Distributed Environments -- Visual Similarity of Web Pages -- Burst Moment Estimation for Information Propagation -- Search in Documents Based on Topical Development -- Mining Overall Sentiment in Large Sets of Opinions -- Opinion Mining through Structural Data Analysis Using Neuronal Group Learning -- Rough Set Based Concept Extraction Paradigm for Document Ranking -- Knowledge Modeling for Enhanced Information Retrieval and Visualization -- Entity Extraction from the Web with WebKnox -- Order-Oriented Reasoning in Description Logics -- Moderated Class–Membership Interchange in Iterative Multi–relational Graph Classifier.

Welcome to the 6th Atlantic Web Intelligence Conference (AWIC 2009), to be held during September 9-11, 2009 in Prague, Czech Republic. The conference will be held at the Faculty of Mathematics and Physics of the Charles University, Prague. This building has a convenient location in the historical city center, in the area called Lesser Town close to local attractions like Charles Bridge and Prague Castle. The Atlantic Web Intelligence Conferences bring together scientists, engineers, computer users, and students to exchange and share their experiences, new ideas, and research results about all aspects (theory, applications and tools) of intelligent methods applied to Web based systems, and to discuss the practical challenges encountered and the solutions adopted. Previous AWIC events were held in Spain - 2003, Mexico - 2004, Poland - 2005, Israel - 2006 and France - 2007.