formdticn is a simple form of inductive inference over a smalt set of attributes known in advance [2] m The attributes are sufficient to describe all oDJects in some universe of interest, A concept can be regarced as a function that partitions these objects into two categories* the "positive instances" and the "negative instances" of the concept. Concept formation takes place when a concept is ...

The Galois (or concept) lattice produced from a binary relation has been proved useful for many applications. Building the Galois lattice can be considered as a conceptual clustering method since it results in a concept hierarchy. This article presents incremental algorithms for updating the Galois lattice and corresponding graph, resulting in an incremental concept formation method. Different ...

The paper presents a clustering method which can be applied to populated ontologies for discovering interesting groupings of resources therein. The method exploits a simple, yet effective and languageindependent, semi-distance measure for individuals, that is based on their underlying semantics along with a number of dimensions corresponding to a set of concept descriptions (discriminating feat...