System and method for modifying a training set

摘要

Information representing a hierarchy of categories is stored. An indication is received that a first case is either a positive case or a negative case for a first category in the hierarchy of categories. The first case is identified, by inference, as a positive case or negative case for a second category in the hierarchy based on relationship of the second category to the first category. A training set for the second category is modified based on the identification by reference.