Gleason grading is typically done by doctors on a case by case basis. Since this process involves humans, grading is prone to several problems. First, the task is extremely time-consuming and tedious as tissue samples must be… · More examined in great detail. Second, when faced with many tissue samples a human grader may become fatigued and provide inconsistent scores. Third, it is impractical to expect humans to be the primary judge as medical data becomes increasingly digitized and stored in large quantities.