| 摘要 |
PROBLEM TO BE SOLVED: To efficiently generate a statistic at high speed by performing statistical processing concerning an attribute contained in transaction data which contain all items of respective item sets. SOLUTION: An item set group generating part 20 finds corresponding relations between respective items and transaction ID groups, which contain these items, from transaction ID and transaction data groups, which contain items, stored in a magnetic disk device 5 as a data base and generates the item set group corresponding to each of transaction ID from the item sets in the data base. Then, the data of this item set group are outputted to a statistical processing part 21. The statistical processing part 21 performs statistical outputting concerning the attribute in the transaction data group containing all the items for each item. |
