This book constitutes the proceedings of the 9th International Conference on Web Information Systems Engineering, WISE 2008, held in Auckland, New Zealand, in September 2008. The 17 revised full papers and 14 revised short papers presented together with two keynote talks were carefully reviewed and selected from around 110 submissions.

Keynotes.- Data Quality in Web Information Systems.- XML Storage and Processing on Mobile Devices.- Grid Computing and Peer-to-Peer Systems.- Approximate Information Filtering in Peer-to-Peer Networks.- Achieving Effective Multi-term Queries for Fast DHT Information Retrieval.- Efficiently Handling Dynamics in Distributed Link Based Authority Analysis.- Web Mining.- Online Outlier Detection Based on Relative Neighbourhood Dissimilarity.- Behavioural Targeting in On-Line Advertising: An Empirical Study.- Integrating Multiple Data Sources for Stock Prediction.- Rich Web User Interfaces.- Intra/Inter-document Change Awareness for Co-authoring of Web Sites.- Requirements for Rich Internet Application Design Methodologies.- SyncRerank: Reranking Multi Search Results Based on Vertical and Horizontal Propagation of User Intention.- Semantic Web.- Web-Based Measure of Semantic Relatedness.- Locally Expandable Allocation of Folksonomy Tags in a Directed Acyclic Graph.- Computing Relaxed Answers on RDF Databases.- Semantically Enhanced Entity Ranking.- Discovering Pathways of Service Oriented Biological Processes.- Web Information Retrieval.- Supporting Judgment of Fact Trustworthiness Considering Temporal and Sentimental Aspects.- Improving Mobile Web-IR Using Access Concentration Sites in Search Results.- Can Social Tagging Improve Web Image Search?.- Web Data Integration.- Mashing Up Context-Aware Web Applications: A Component-Based Development Approach.- Correlating Time-Related Data Sources with Co-clustering.- Context-Aware Mashups for Mobile Devices.- A Semantic Overlay for Service Discovery across Web Information Systems.- Queries and Peer-to-Peer Systems.- Filtering Techniques for Rewriting XPath Queries Using Views.- Efficient Top-k Data Sources Ranking for Query on Deep Web.- Optimizing Distributed Top-k Queries.- POEMS: Peer-Based Overload Management.- Web Services.- Improving Web Service Discovery by Using Semantic Models.- BPEL4RBAC: An Authorisation Specification for WS-BPEL.- A Workflow-Based Approach for Creating Complex Web Wrappers.- Miscellaneous.- Contained Rewritings of XPath Queries Using Views Revisited.- Addressing New Concerns in Model-Driven Web Engineering Approaches.- A Web-Based Automated System for Industry and Occupation Coding.

This book constitutes the proceedings of the 9th International Conference on Web Information Systems Engineering, WISE 2008, held in Auckland, New Zealand, in September 2008. The 17 revised full papers and 14 revised short papers presented together with two keynote talks were carefully reviewed and selected from around 110 submissions. The papers are organized in topical sections on grid computing and peer-to-peer systems; Web mining; rich Web user interfaces; semantic Web; Web information retrieval; Web data integration; queries and peer-to-peer systems; and Web services.