Abstract: This invention is to appropriately support creation of a classification rule for a new data item. This method includes: storing a new data item and a category of the new data item into a storage; extracting feature patterns each including a condition including a feature element of the new data item stored in the storage and a corresponding category from data stored in a correct answer data storage, which stores data items and categories of the data items, and storing the feature patterns into a feature pattern storage; and grouping the feature patterns stored in the feature pattern storage into a first set whose feature pattern matches with the category of the new data item stored in the storage and a second set whose feature pattern does not match with the category of the new data item, and storing a grouping result into a group data storage.

Abstract: This invention is to appropriately support creation of a classification rule for a new data item. This method includes: storing a new data item and a category of the new data item into a storage; extracting feature patterns each including a condition including a feature element of the new data item stored in the storage and a corresponding category from data stored in a correct answer data storage, which stores data items and categories of the data items, and storing the feature patterns into a feature pattern storage; and grouping the feature patterns stored in the feature pattern storage into a first set whose feature pattern matches with the category of the new data item stored in the storage and a second set whose feature pattern does not match with the category of the new data item, and storing a grouping result into a group data storage.

Abstract: A category setting support method according to this invention includes calculating an influence degree to carry out a category setting to a data item for each of a plurality of data items stored in a data storage based on a predetermined relevant item, and storing the influence degree into the data storage in association with the corresponding data item; and determining a category setting priority order for each data item based on the influence degrees stored in the data storage, and displaying a display to carry out the category setting based on the category setting priority order. Accordingly, it becomes possible for a user such as a system administrator to efficiently set a category to the data item.

Abstract: An information providing method includes the steps of receiving pieces of terminal identifying information and pieces of user identifying information from a plurality of terminal devices, identifying user attributes for each of the pieces of user identifying information by referring to a user management table containing correspondences between the user identifying information and user attributes, by referring to an information management table containing correspondences among user attributes, provided information, and related information, extracting pieces of provided information and pieces of related information for each of the user attributes, outputting, for each of the pieces of user identifying information, the extracted provided information to terminal devices identified by corresponding pieces of the terminal identifying information, and displaying the extracted related information on a screen of a screen device.