Knowledge Engineering: Alignment and Identity.- Pattern-Based Mapping Refinement.- Practical Considerations on Identity for Instance Management in Ontological Investigation.- Knowledge Acquisition.- Involving Business Users in Formal Modeling Using Natural Language Pattern Sentences.- Knowledge Acquisition from Sources of Law in Public Administration.- Enriching the Gene Ontology via the Dissection of Labels Using the Ontology Pre-processor Language.- Collaboration in Knowledge Engineering.- Ontology Development for the Masses: Creating ICD-11 in WebProtégé.- RDFauthor: Employing RDFa for Collaborative Knowledge Engineering.- Knowledge Engineering: Patterns.- Pattern-Based Ontology Transformation Service Exploiting OPPL and OWL-API.- Experimenting with eXtreme Design.- Social Aspects and Tagging.- Weaving a Social Data Web with Semantic Pingback.- Social People-Tagging vs. Social Bookmark-Tagging.- FOLCOM or the Costs of Tagging.- Semantic Web, Web of Data and Linked Data.- Epiphany: Adaptable RDFa Generation Linking the Web of Documents to the Web of Data.- Scaling Up Question-Answering to Linked Data.- Ontology Evolution / Refinement.- Using Semantic Web Resources for Data Quality Management.- Using Ontological Contexts to Assess the Relevance of Statements in Ontology Evolution.- What Is Concept Drift and How to Measure It?.- Knowledge Access.- Mobile Cultural Heritage Guide: Location-Aware Semantic Search.- Semantic Scout: Making Sense of Organizational Knowledge.- Annotation, Retrieval and Natural Language Processing.- Authoring Technical Documents for Effective Retrieval.- A Methodology towards Effective and Efficient Manual Document Annotation: Addressing Annotator Discrepancy and Annotation Quality.- Towards Better Ontological Support for Recognizing TextualEntailment.- Short Papers.- Making Sense of Design Patterns.- Acquiring and Modelling Legal Knowledge Using Patterns: An Application for the Dutch Immigration and Naturalisation Service.- A Model-Driven Approach for Using Templates in OWL Ontologies.- Specialization and Validation of Statecharts in OWL.- Temporal Knowledge Acquisition and Modeling.- Using Machine Learning to Support Continuous Ontology Development.- Handling Markup Overlaps Using OWL.- Ontology Learning for Cost-Effective Large-Scale Semantic Annotation of Web Service Interfaces.- Towards Hybrid Reasoning for Verifying and Validating Multilevel Models.- Representing, Proving and Sharing Trustworthiness of Web Resources Using Veracity.- Enhancing Content-Based Recommendation with the Task Model of Classification.- Extending Open Rating Systems for Ontology Ranking and Reuse.- HyperTwitter: Collaborative Knowledge Engineering via Twitter Messages.- TagSorting: A Tagging Environment for Collaboratively Building Ontologies.- QuiKey – An Efficient Semantic Command Line.- Kali-ma: A Semantic Guide to Browsing and Accessing Functionalities in Plugin-Based Tools.- Constructing Understandable Explanations for Semantic Search Results.- Ontology Engineering with Rough Concepts and Instances.- Building Large Lexicalized Ontologies from Text: A Use Case in Automatic Indexing of Biotechnology Patents.- ReBEC: A Method for Capturing Experience during Software Development Projects.- Reasoning by Analogy in the Generation of Domain Acceptable Ontology Refinements.- Evaluations of User-Driven Ontology Summarization.- A Visualization Service for the Semantic Web.- How Much Semantic Data on Small Devices?.- A Semantic Approach for Learning Objects Repositories with Knowledge Reuse.