摘要

As an effective technology in knowledge expression and processing, Formal Concept Analysis (FCA) uses formal concept and concept lattice to analyze formal context. Recently, the calculation methods of FCA are generally very complex. This paper intends to use the attribute topology of FCA to calculate formal concept. By calculating the sub-topology which is top-attribute centered, the concepts in every sub-topology can be drawn. This method is easy to operate, can calculate all of the formal concepts rapidly and completely and no concept can be missed during the calculation.

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