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Dla systemu informacyjnego SI = (U, A), A={a, b, c, d, e}, zbiór reduktów to R...

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Dla systemu informacyjnego SI = (U, A), A={a, b,

c, d, e},

zbiór reduktów to Read(A) = {{a, b, c}, {b, c, d}, {b, c, e}}.

Wówczas

rdzeń zbioru atrybutów A to:

Core(A) =

Core(A) = {a, b, c, d, e}

❌

Core(A) = {b, c}

✅

Core(A) = {b}

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