In this paper, we are interested in the analysis of sequential data and we propose an original framework based on Formal Concept Analysis (FCA). For that, we introduce sequential pattern structures, an original specification of pattern structures for dealing with sequential data. Pattern structures are used in FCA for dealing with complex data such as intervals or graphs. Here they are adapted ...

In our works, we use a concept lattice as classifier of noised symbol images. On the contrary of others methods of classification based on Formal Concept Analysis [12], our approach is adapted to the special case of noisy since it is based on a navigation into the lattice structure to classify a noised symbol image : the navigation is performed from the minimal concept, until a final concept is...

Presented is preliminary study of the role of data structures in algorithms for formal concept analysis. Studied is performance of selected algorithms in dependence on chosen data structures and size and density of input object-attribute data. The observations made in the paper can be seen as guidelines on how to select data structures for implementing algorithms for formal concept analysis.

CEM is an email management system which stores its email in a concept lattice rather than in the usual tree structure. By using such a conceptual multi-hierarchy, the system provides more flexibility in retrieving stored emails. The paper presents the underlying mathematical structures, discusses requirements for their maintenance and presents their implementation.