Abstract: With regard to multiple attribute group decision making problems with linguistic assessment information,a new TOPSIS method is proposed.In the method,LWD operator and LOWA operator are used to aggregate the linguistic information.The optimization alternative(s)is determined by calculating the distance of every alternative and positive ideal solution and negative ideal solution.It is most similar to positive ideal solution and far away fvom negative ideal solution.Finally,a numerical example is used to illustrate the use of the proposed method.

Key words: group decision making, TOPSIS, linguistic assessment information, LWD operator, LOW operator