Ranked soft sets

This article defines ranked soft sets and establishes their fundamental theory. new model of uncertain knowledge is a non-numerical yet powerful improvement sets. The relies on qualitative the basic parameterized description posed by We define relations between some existing models (N-soft sets, fuzzy probabilistic sets) that enhance set spirit with help additional quantities. Primary contributions to development include set-theoretic operations representation theorems, at theoretical level; scores aggregation operators, practical level. Finally we design multi-person decision-making strategy for data in form takes advantage these elements.