Abstract
The purpose of this paper is to investigate the notion of full soft sets [6], which is a generalized notion of bijective soft sets [11] and exclusive disjunctive soft sets [21], and to simplify the notion of uncertain elements defined in exclusive disjunctive soft sets. We also investigate some operations and soft decision systems induced by full soft sets: restricted/relaxed AND operations, Type I(II)-dependency between full soft sets and bijective soft sets, full soft decision systems, reduction of full soft decision systems, decision rules in full soft decision systems.