Intuitionistic linguistic fuzzy
numbers, as well as their operational laws, expected values, score
function and accuracy function are defined. Some intuitionistic
linguistic fuzzy aggregation operators are proposed, including weighted
arithmetic averaging operator and weighted geometric averaging
operator. For fuzzy multi-criteria decision making
problems, in which the criteria values are intuitionistic linguistic
fuzzy numbers, an approach based on intuitionistic linguistic fuzzy
aggregation operators is proposed. By using these aggregation
operators, criteria values are aggregated and integrated
intuitionistic linguistic fuzzy numbers of alternatives are
attained. By comparing score function and accuracy function values
of integrated fuzzy numbers, a ranking of the whole alternative set
can be attained. Analysis of an example shows the feasibility and
effectiveness of the method.