  In this paper, the notion of the interval valued neutrosophic soft sets
($ivn-$soft sets) is defined which is a combination of an interval valued
neutrosophic sets \cite{wan-05} and a soft sets \cite{mol-99}. Our $ivn-$soft
sets generalizes the concept of the soft set, fuzzy soft set, interval valued
fuzzy soft set, intuitionistic fuzzy soft set, interval valued intuitionistic
fuzzy soft set and neutrosophic soft set. Then, we introduce some definitions
and operations on $ivn-$soft sets sets. Some properties of $ivn-$soft sets
which are connected to operations have been established. Also, the aim of this
paper is to investigate the decision making based on $ivn-$soft sets by level
soft sets. Therefore, we develop a decision making methods and then give a
example to illustrate the developed approach.
