Preface


Formal Concept Analysis is a method of analysis of logical data based on for-
malization of conceptual knowledge by means of lattice theory. It has proved
to be of interest to various applied fields such as data visualization, knowledge
discovery and data mining, database theory, and many others.
The International Conference “Concept Lattices and Their Applications (CLA)”
is being organized since 2002 and its aim is to bring together researchers from
various backgrounds to present and discuss their research related to FCA.
The Twelfth edition of CLA was held in Clermont-Ferrand, France from October
13 to 16, 2015. The event was jointly organized by the LIMOS laboratory, CNRS,
and Blaise Pascal university, France.
This volume includes the selected papers and the abstracts of 5 invited talks.
We would like to express our warmest thanks to the keynote speakers.
This year, there were initially 39 submissions, from which the Program Com-
mittee selected 20 papers which represents an acceptance rate of 51.2%.
The program of the conference consisted of five keynote talks given by the follow-
ing distinguished researchers: Didier Dubois, Lhouari Nourine, Gabriella Pasi,
Jan Ramon, and Takeaki Uno, together with twenty communications authored
by researchers from 11 countries, namely: Austria, Czech republic, France, Ger-
many, Kazakhstan, Republic of South Africa, Russia, Slovakia, Spain, Sweden,
and Ukraine.
Each paper was reviewed by 3–4 members of the Program Committee and/or ad-
ditional reviewers. We thank them all for their valuable assistance. It is planned
that extended versions of the best papers will be published in a well-established
journal, after another reviewing process.
The success of such event is mainly due the hard work and dedication of many
people and a collaboration of several institutions. We thank the contributing
authors, who submitted high quality works, we thank to the CLA Steering Com-
mittee, who gave us the opportunity of chairing this edition, and we thank the
Program Committee, the additional reviewers, and the local Organization Com-
mittee. We are also thankful to the following institutions, which have helped
the organization of the twelfth edition of CLA: Coffreo, IPLeanware, Axège, and
Oorace.
We also thank the Easychair conference system as it made easier most of our
administration tasks related to paper submission, selection, and reviewing. Last
but not least we thank Jan Outrata, who offered his files for preparing the
proceedings.


October 2015                                                 Sadok Ben Yahia
                                                                  Jan Konecny
                                                   Program Chairs of CLA 2015