Categorization is the process in which ideas and objects are recognized, differentiated and understood. Categorization implies that objects are grouped into categories, usually for some specific purpose. Ideally, a category illuminates a relationship between the subjects and objects of knowledge. Categorization is fundamental in language, prediction, inference, decision making and in all kinds of environmental interaction.
Introduction the software that allows using tags and categories on your computer just the way you do with web-pages
Tag your files, search through them with a few clicks, organize your tags into categories, and group your files into nice virtual folders