CLASSIC: a structural data model for objects
SIGMOD '89 Proceedings of the 1989 ACM SIGMOD international conference on Management of data
Heuristic graph displayer for G-BASE
International Journal of Man-Machine Studies
Knowledge acquisition at the front end: defining the domain
Knowledge Acquisition
International Journal of Man-Machine Studies
ACM SIGART Bulletin - Special issue on implemented knowledge representation and reasoning systems
Visual Programming Environments: Paradigms and Systems
Visual Programming Environments: Paradigms and Systems
Eliciting Knowledge and Transferring It Effectively to a Knowledge-Based System
IEEE Transactions on Knowledge and Data Engineering
Active documents combining multimedia and expert systems
SIGDOC '94 Proceedings of the 12th annual international conference on Systems documentation: technical communications at the great divide
An Algebraic Interpretation of Semantic Networks
COSIT '99 Proceedings of the International Conference on Spatial Information Theory: Cognitive and Computational Foundations of Geographic Information Science
ICCS '08 Proceedings of the 16th international conference on Conceptual Structures: Knowledge Visualization and Reasoning
The Advent of Formal Diagrammatic Reasoning Systems
ICFCA '09 Proceedings of the 7th International Conference on Formal Concept Analysis
Visual browsing and editing of topic map-based learning repositories
TMRA'06 Proceedings of the 2nd international conference on Topic maps research and applications
A diagrammatic reasoning system for ALC
KSEM'07 Proceedings of the 2nd international conference on Knowledge science, engineering and management
Integrating rules in term subsumption knowledge representation servers
AAAI'91 Proceedings of the ninth National conference on Artificial intelligence - Volume 1
A metamodel and UML profile for rule-extended OWL DL ontologies
ESWC'06 Proceedings of the 3rd European conference on The Semantic Web: research and applications
The design and implementation of an active peer agent providing personalized user interface
KES'05 Proceedings of the 9th international conference on Knowledge-Based Intelligent Information and Engineering Systems - Volume Part I
Knowledge acquisition: Past, present and future
International Journal of Human-Computer Studies
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A visual language is defined equivalent in expressive power to term subsumption languages expressed in textual form. To each knowledge representation primitive there corresponds a visual form expressing it concisely and completely. The visual language and textual languages are intertranslatable. Expressions in the language are graphs of labeled nodes and directed or undirected arcs. The nodes are labeled textually or iconically and their types are denoted by six different outlines. Computer-readable expressions in the language may be created through a structure editor that ensures that syntactic constraints are obeyed. The editor exports knowledge structures to a knowledge representation server computing subsumption and recognition, and maintaining a hybrid knowledge base of concept definitions and individual assertions. The server can respond to queries graphically displaying the results in the visual language in editable form. Knowledge structures can be entered directly in the editor or imported from knowledge acquisition tools such as those supporting repertory grid elicitation and empirical induction. Knowledge structures can be -exported to a range of knowledge-based systems.