Abstract: An input/output control mechanism receives facial image information of different facial expressions of a plurality of human beings to provide control so that a normalization processing mechanism normalizes each facial image information. A facial expression generation mechanism converts the normalized facial image information into facial expression components, and averages the facial expression components for each facial expression to store the same as average facial expression components. The input/output control mechanism has the facial expression component converted by the facial expression generation mechanism after the applied facial image information is normalized.

Abstract: A plurality of data stored in a data base memory are displayed on a display portion at random, and when a retriever designates a desired data among the displayed data by a keyboard or a pointing device, a CPU stores the data in an auxiliary memory, estimates data which seems to be desirable for the retriever based on the stored data, and selects estimated data from the data base memory as well as data which are not determined to be desirable, and these are displayed simultaneously. Therefore, the scope of desirable data can be narrowed, well reflecting the intention of the retriever.