Multi-attribute decision making based on neutral averaging operators for intuitionistic fuzzy information

- The neutral operation and scalar neutral operation are proposed.
- The geometric meaning of the PS function is interpreted.
- The proportional distribution rules of membership function and non-membership function of IFSs are explained.
- We develop the IFWNA operator and the IFOWNA operator and investigate the properties.
- The new operators are applied to decision making and given the comparisons.