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- Karl Erich Wolff
- 2003

SUMMARY This paper introduces the main ideas of Formal Concept Analysis in a very elementary way without using formal mathematical definitions. It leads the reader to an understanding of an important technique of graphical knowledge representation namely the line diagrams of concept lattices. As a short application some aspects of conceptual learning using… (More)

- Karl Erich Wolff
- Formal Concept Analysis
- 2005

- Karl Erich Wolff
- 2001

This paper introduces Temporal Concept Analysis (TCA) as the theory of temporal phenomena described with tools of Formal Concept Analysis (FCA). The basic notion in TCA is that of a Conceptual Time System introduced by the author [42,45] such that state spaces and phase spaces can be defined as concept lattices which clearly represent the meaning of states… (More)

- Karl Erich Wolff, Wendsomde Yameogo
- ICCS
- 2003

The purpose of this paper is to clarify in the framework of Temporal Concept Analysis the distinction between the notion of the dimension of time and the one-dimensionality of life tracks of simple objects. The reader is led to the central problems by many examples.

- Karl Erich Wolff
- ICCS
- 2002

The purpose of this paper is to relate the notions of states and transitions in Automata Theory to the conceptual descriptions of states, situations, and transitions in Temporal Concept Analysis. The first key for that relation is that states and situations can be described as formal concepts of formal contexts whose objects are points of time. The second… (More)

- Karl Erich Wolff
- ICCS
- 2009

- Karl Erich Wolff
- ICCS
- 2005

- Karl Erich Wolff
- ICFCA
- 2004

- Karl Erich Wolff
- 2003

- Karl Erich Wolff
- Fuzzy Sets and Systems
- 2002