With respect to the multiattribute decision-making (MADM) problem in which the attributes have interdependent or interactive\nphenomena under the interval-valued intuitionistic fuzzy environment, we propose a group decision-making approach based on\nthe interval-valued intuitionistic fuzzy Einstein geometric Choquet integral operator (IVIFEGC). Firstly, the Einstein operational\nlaws and some basic principle on interval-valued intuitionistic fuzzy sets are introduced. Then, the IVIFEGC is developed and some\ndesirable properties of the operator are studied. Further, an approach tomultiattribute group decision-making with interval-valued\nintuitionistic fuzzy information is developed, where the attributes have interdependent phenomena. Finally, an illustrative example\nis used to illustrate the developed approach.
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