| 摘要 |
<p>For every item, plural kinds of attribute data are registered beforehand in a data base (21). Preset is a retrieval condition (23) comprising a plurality of premise conditions which are desired conditions on at least part of the plural kinds of attribute data, and coupling conditions for coupling these premise conditions with each other. The degrees of relevancy that the attribute data are relevant to the preset premise conditions are calculated by an operation control unit (24). According to the preset coupling conditions, executed are at least one of a MEAN operation (25) for calculating the average value of those degrees of relevancy, a MIN operation (26) for picking up the minimum value from among those degrees of relevancy, and a MAX operation (27) for picking up the maximum value from among those degrees of relevancy. Then, outputted is the signal for representing the degree of coincidence which is obtained by these operations.</p> |
