| 摘要 |
PURPOSE: To provide an identifying device for document type with which the equivalency of a document type can be judged even when a text expressing the document type is different. CONSTITUTION: A document type expressed in a text form or a document containing the document type is analyzed and converted to an analytic tree by a document type analytic means 2-1. Next, the provided analytic tree is normalized and outputted by a normalizing means 2-2. In this case, normalization means the deletion of document elements not to affect the logical structure of the document, the line-up of document elements in specified order and the line-up of components 'regardless of appearance order' in a content model in this specified order. Then, provided normalized expressions are compared by a normalized expression comparing means 2-3. Since the document type is normalized, simple complete coincident comparison is enabled. |
