| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that a list of documents corresponding to a category can be displayed when the category is selected, however, when a document is selected as inverse operation, it is impossible to display all categories, to which the document belongs, by tracing from the document side. <P>SOLUTION: The device is provided with a document classification result file indicating the correspondence relation between categories of all category systems and documents to which the categories belong. The classification result file can be searched similarly from the category side or the document side even if either of the category side and the document side is selected. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
