In other words, is the set of all attributes that are common to all objects in . Similarly, for any set of attributes, set
In other words, is the set of all objects having all the attributes in . We call a pair a concept of the context provided that
If is a concept, then is called the extent of the concept and the intent of the concept.
Given a context . Let be the set of all concepts of . Define a binary relation on by iff . Then makes a lattice, and in fact a complete lattice. together with is called the concept latice of the context .
|Date of creation||2013-03-22 19:22:34|
|Last modified on||2013-03-22 19:22:34|
|Last modified by||CWoo (3771)|