Constructing and maintaining a personalized category tree, displaying documents by category and personalized categorization system

摘要

The present invention provides methods, systems and apparatus: for constructing a personalized category tree; for maintaining a personalized category tree; for displaying documents by category by utilizing a personalized category tree; and a personalized categorization system. A personalized category tree is a category tree that includes at least one category node. A method for constructing a personalized category tree includes: the independent creation of each of said at least one category node comprises the steps of: defining a label for the category node; and specifying at least one keyword for the category node.