(1. College of Mathematics and Econometrics, Hunan Univ, Changsha, Hunan410082, China; 2. College of Science, Shandong Jianzhu Univ, Jinan, Shandong250101 China) 在知网中查找 在百度中查找 在本站中查找
Through the construction of rough concepts in formal concept analysis, we introduce several completions for posets in this paper. After that, we construct a formal context from a poset, and discuss the relationship between the completions and rough concepts. It is shown that the completions proposed are isomorphic to Dedekind-MacNeille completion.
