1. A method for digital object categorization or retrieval comprising: providing for graphically presenting a selector to a user, the selector including a position which is variably adjustable within a range by the user to adjust a level of noise in at least one of digital object categorization and digital object retrieval, the range of the selector having been normalized over a set of digital object categories based on scores output by a trained categorizer for each of a set of labeled test objects for each of the set of digital object categories and a label for each of the test objects; receiving selector position information; with a computer processor, performing at least one of digital object categorization and digital object retrieval, and providing for outputting results of the at least one of digital object categorization and digital object retrieval, based on the selector position information.