Patent ID: 7225397

Claim:
An information processing method comprising: providing an annotation for multiple page files, including the steps of: obtaining a plurality of page files from a web site; generating a group of said page files, page layout structures of which are at least similar by analyzing said page files to introduce structural descriptive forms for said page layout structures and to assign characteristic values for said structural descriptive forms; employing said structural descriptive forms and said characteristic values to calculate an inter-page distance representing a similarity of said page files; and grouping said page files, of which said inter-page distance is equal to or smaller than a predetermined value; providing a first annotation for an arbitrary page file in said group; and correlating said first annotation with at least a part of other page files of said group; wherein said step of correlating said first annotation with said other page files in said group includes the steps of: determining whether said first annotation should be applied for the page files of said group; adding a second annotation, when the determination is false, for an arbitrary page file of a page group consisting of page files with which said first annotation is not correlated; correlating said second annotation with at least a part of other page files of said page group; and correcting a calculation expression for said inter-page distance, so that, at said step of generating a group, said page file with which said first annotation is correlated and said page files that are correlated with said second annotation do not fall in the same group.