"1"^^ . . . "1"^^ . "We discuss the paper by Cheung and Vogel, Inf Retr 8(2), pp 285-299 (2005). We introduce some counterexamples showing that the theoretical results, the paper is based upon, are incorrect." . . "000301979100003" . . "On complexity reduction of concept lattices: Three counterexamples"@en . . "P(GAP103/10/1056)" . "6"^^ . . "Information retrieval, Lattice theory, Concept lattice, Complexity reduction"@en . . "15310" . "On complexity reduction of concept lattices: Three counterexamples" . . . . "RIV/61989592:15310/12:33141188!RIV13-GA0-15310___" . "RIV/61989592:15310/12:33141188" . "1386-4564" . . "Krupka, Michal" . "2" . "15" . "On complexity reduction of concept lattices: Three counterexamples"@en . . "On complexity reduction of concept lattices: Three counterexamples" . . "156195" . . "We discuss the paper by Cheung and Vogel, Inf Retr 8(2), pp 285-299 (2005). We introduce some counterexamples showing that the theoretical results, the paper is based upon, are incorrect."@en . "10.1007/s10791-011-9175-7" . . "[D6149F8ADD29]" . . "Information Retrieval" . . "NL - Nizozemsko" .