Magnum Opus supposes existence of a sample of cases where each case is described by:

number of attributes, doesn’t matter if they are qualitative or quantitative values (attribute-value data)

number of items (basket data)

Problem is:

Find ‘knowledge’ describing relationship between attributes/items, so called association rules, something like:

IF (attribute_i is less-equal-greater-then v_i and …attribute_n is less-equal-greater-then v_n) THEN (attribute_j is less-equal-greater-then v_j )

IF (item_i & item_k & … item_n) THENitem_j