Invited Talk -- Visualization, Reasoning, and Rationality -- Regular Papers -- Introducing Contextual Reasoning to the Semantic Web with OWLC -- Graph-based variability modelling: towards a classification of existing Formalisms -- Publishing Uncertainty on the Semantic Web: Blurring the LOD bubbles -- Formal Context Generation using Dirichlet Distributions -- Lifted Temporal Most Probable Explanation -- Temporal Relations between Imprecise Time Intervals: Representation and Reasoning -- Relevant Attributes in Formal Contexts -- Adaptive Collaborative Filtering for Recommender System -- Exploring and Conceptualizing Attestation -- Enhancing Layered Enterprise Architecture Development through Conceptual Structures -- Ontology-informed Lattice Reduction Using the Discrimination Power Index -- Redescription mining for learning definitions and disjointness axioms in Linked Open Data -- Covering Concept Lattices with Concept Chains -- The compositional rule of inference under the composition max-product -- Short Papers -- Mining Social Networks from Linked Open Data -- Navigate and Refine: IR Chatbot based on Conceptual Models -- Semiotic-Conceptual Analysis of a Lexical Field -- Applying Semiotic-Conceptual Analysis to Mathematical Language -- Mathematical similarity models: Do we need incomparability to be precise? -- Conceptual Graphs Based Modeling of MongoDB Data Structure and Query.