“…Among characteristics so that the classes of objects are linearly the different representations proposed in the literature, separable. In other words, we argue that careful feature some of the most popular ones are attribute relational selection followed by a simple classifier is a much more databases (e.g., [3]) and graphs (e.g., [5]), semantic nets preferable approach than a quick feature selection stage (e.g., [6]), schemata (e.g., [7]), frames (e.g., [8]), Freeman followed by a carefully designed classifier. As is well chain codes ( [9]), and co-occurrence matrices.…”