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» Variables in Concept Graphs
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ENDM
2007
111views more  ENDM 2007»
14 years 9 months ago
Claw-free circular-perfect graphs
The circular chromatic number of a graph is a well-studied refinement of the chromatic number. Circular-perfect graphs is a superclass of perfect graphs defined by means of this...
Arnaud Pêcher, Xuding Zhu
RSA
2011
89views more  RSA 2011»
14 years 4 months ago
Excluding induced subgraphs: Critical graphs
Determining the cardinality and describing the structure of H-free graphs is wellinvestigated for many graphs H. In the nineties, Prömel and Steger proved that for a graph H with...
József Balogh, Jane Butterfield
IUI
2009
ACM
15 years 6 months ago
Structuring and manipulating hand-drawn concept maps
Concept maps are an important tool to knowledge organization, representation, and sharing. Most current concept map tools do not provide full support for hand-drawn concept map cr...
Yingying Jiang, Feng Tian, XuGang Wang, Xiaolong Z...
ECAI
1994
Springer
15 years 1 months ago
Concept Language with Number Restrictions and Fixpoints, and its Relationship with Mu-calculus
Abstract. Many recent works point out that there are several possibilities of assigning a meaning to a concept definition containing some sort of recursion. In this paper, we argue...
Giuseppe De Giacomo, Maurizio Lenzerini
CLA
2004
14 years 11 months ago
Planarity of Additively Drawn Concept Lattices
In Formal Concept Analysis, it is a very important but quite difficult task to draw line diagrams of concept lattices automatically. In particular, we want every planar lattice to ...
Christian Zschalig