Invited -- Conceptual Structures in Modern Information Retrieval -- Formal Concept Analysis on Its Way from Mathematics to Computer Science -- Data and Knowledge Structures -- A Linearly Complex Model for Knowledge Representation -- Relation Graphs: A Structure for Representing Relations in Contextual Logic of Relations -- Information Transfer across Simple Concept Graphs -- Relational Scaling and Databases -- Information Retrieval -- Knowledge Representation in CGLF, CGIF, KIF, Frame-CG and Formalized-English -- Conceptual Graph Matching for Semantic Search -- Text Schema Mining Using Graphs and Formal Concept Analysis -- Text Mining at Detail Level Using Conceptual Graphs -- Natural Language -- Processing Negation in NL Interfaces to Knowledge Bases -- Automatic Generation and Evaluation of Sentence Graphs out of Word Graphs -- CG Representations of Non-literal Expressions -- Ontology and Semantics -- A Peircean Ontology of Semantics -- Building Concept Lattices by Learning Concepts from RDF Graphs Annotating Web Documents -- The CG Formalism as an Ontolingua for Web-Oriented Representation Languages -- A Viewpoint Model for Cooperative Building of an Ontology -- Towards a Pragmatic Web -- A First Step toward the Knowledge Web: Interoperability Issues among Conceptual Graph Based Software Agents Part I -- Interfaces and Applications -- CGWorld - Architecture and Features -- Extending SNePSwD with Permissive Belief Revision -- On Teaching Conceptual Graphs -- Logical and Mathematical Foundations -- The Use of Associative Concepts in the Incremental Building of a Logical Context -- Modal Logic for Evaluating Formulas in Incomplete Contexts -- An Embedding of Existential Graphs into Concept Graphs with Negations -- Interpretation of Automata in Temporal Concept Analysis -- Associative and Formal Concepts -- Semiconcept Graphs with Variables -- Existential Concept Graphs of Power Context Families.