The term subsumption is ambiguous, since it refers to two different problems. One is the problem of individual subsumption, i.e. the determine the truth of certain contingents individual ennciados ( synthetic ) and the generic sbsunción, this is the of the relationship that exists between two predicates. Difficulties in solving problems of subsumption ( individual or generic ) come from two fuente:falta of factual information ( knowledge 41 lagoon; semantic uncertainty or vagueness ( recognition 41 lagoon;
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