Fragment-oriented Visualization of Formal Concept Lattices.

<p>The existing program solutions for visualization of formal concepts specialize on the narrow tasks in the field of formal concept analysis and cannot cover the entire area. They cannot satisfy in many ways the growing demands of the research community. &nbsp;It has become a prerequisite for the systematization application FCA capabilities and creating scripts for empowerment of Formal Concept Analysis Research Toolbox (FCART). This paper includes the basic definitions and introduction in the FCA field and the review of actual applications. The review includes focal points, integral characteristics and comparison their features. Besides this, this article contains some basics of the diagram Hasse visualization and the basic approaches in the lay outing and the user interface. The result of investigation is two program solutions for improvement readability of the linear diagram and convenience of the interface within the application FCART. The first script realizes minimal intersection method with sorting concepts on the same level by calculation of the coefficient depending on the position of their parents. The second script increases the certain area on the diagram by extension the edges near the investigated concept. The results of the scripts illustrated by their diagrams and compared with the visualization of the same contexts in other programs. &nbsp;In conclusion, presented ideas in ways for subsequent improve the readability of line diagrams and the possible new approaches in this field. The obtained results can used for further development of the system and creating scripts for other applications. The feature of this paper is annex that includes lattices with integral characteristic of existing program solutions and their features and ready to use code in Delphi Web Script for the FCART system. &nbsp;</p>