Text Categorization: Conceptual View

This chapter is concerned with the conceptual view of text categorization. It is the process of assigning a category or some categories to each text. Text categorization is divided into hard text categorization and soft text categorization, depending on whether more than one category is allowed to be assigned or not. Depending on whether categories are predefined as a list or a tree, it is divided into flat text categorization and hierarchical text categorization. In this chapter, we describe the text categorization tasks with respect to their types and real examples.