@article{keyhere,
  abstract = {Formal Concept Analysis, developed during the last fifteen years, has been based on the dyadic understanding of a concept constituted by its extension and its intension. The pragmatic philosophy of Charles S. Peirce with his three universal categories, and experiences in data analysis, have suggested a triadic approach to Formal Concept Analysis. This approach starts with the primitive notion of a triadic context defined as a quadruple (G, M, B, Y) where G, M, and B are sets and Y is a ternary relation between G, M, and B, i.e. Y  G×M×B; the elements of G, M, and B are called objects, attributes, and conditions, respectively, and (g, m,b)  Y is read: the object g has the attribute m under (or according to) the condition b. A triadic concept of a triadic context (G, M, B, Y) is defined as a triple (A},
  author = {Lehmann, Fritz and Wille, Rudolf},
  interhash = {fa3e423ee0c5a9dadc3211c3f8a5e4a6},
  intrahash = {2d18c634917546cfa78a73901f0963a3},
  journal = {Conceptual Structures: Applications, Implementation and Theory},
  pages = {32--43},
  title = {A triadic approach to formal concept analysis},
  url = {http://dx.doi.org/10.1007/3-540-60161-9_27},
  year = 1995
}