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Table 1 An example formal context \(\mathbb {K}_{e}\)

From: Matching biomedical ontologies based on formal concept analysis

  Vertebrate Mammal Flying Aquatic Carnivorous
Elephant × ×    
Dolphin × ×   × ×
Porpoise × ×   × ×
Hawk ×   ×   ×
Octopus     × ×