In this paper, we propose some distance measures between type-2 fuzzy sets, and also a new family of utmost distance measures are presented. Several properties of differ- ent proposed distance measures have been intro...In this paper, we propose some distance measures between type-2 fuzzy sets, and also a new family of utmost distance measures are presented. Several properties of differ- ent proposed distance measures have been introduced. Also, we have introduced a new ranking method for the ordering of type-2 fuzzy sets based on the proposed distance measure. The proposed ranking method satisfies the reasonable prop- erties for the ordering of fuzzy quantities. Some properties such as robustness, order relation have been presented. Lim- itations of existing ranking methods have been studied. Fur- ther for practical use, a new method for selecting the best alternative, for group decision making problems is proposed. This method is illustrated with a numerical example.展开更多
In this article, we have pointed out that some propositions corresponding to the distance measure between the type-2 fuzzy sets (T2FSs) as provided by Singh (Frontiers of Computer Science, 2014, 8(5), 741-752), ...In this article, we have pointed out that some propositions corresponding to the distance measure between the type-2 fuzzy sets (T2FSs) as provided by Singh (Frontiers of Computer Science, 2014, 8(5), 741-752), are incorrect by a counterexample. Further, these propositions have been corrected in the present manuscript by giving a correct relation between the T2FSs and validating it with a numerical example.展开更多
针对废旧汽车发动机再制造过程绿色经济效益评价指标之间存在相互影响、相互关联的情况,引入决策试验和评价实验室(Decision-Making Trial and Evaluation Laboratory,DEMATEL)法以及基于2-可加模糊测度的Choquet积分法进行综合评价。首...针对废旧汽车发动机再制造过程绿色经济效益评价指标之间存在相互影响、相互关联的情况,引入决策试验和评价实验室(Decision-Making Trial and Evaluation Laboratory,DEMATEL)法以及基于2-可加模糊测度的Choquet积分法进行综合评价。首先,对废旧汽车发动机再制造过程绿色经济效益的影响因素进行剖析,在此基础上构建了一套较为科学合理的绿色经济效益评价指标体系;其次,利用DEMATEL法来识别指标之间的相互影响关系,并以此来确定指标权重;然后,考虑到指标之间存在相互关联的情况,利用基于2-可加模糊测度的Choquet积分法来计算绿色经济效益评价值;最后,选取4家再制造公司进行实证分析,以验证所构建方法的可行性和有效性。研究表明,所构建方法可以考虑到指标之间相互影响、相互关联的情况,因此能够得到较为准确的评价结果。展开更多
文摘In this paper, we propose some distance measures between type-2 fuzzy sets, and also a new family of utmost distance measures are presented. Several properties of differ- ent proposed distance measures have been introduced. Also, we have introduced a new ranking method for the ordering of type-2 fuzzy sets based on the proposed distance measure. The proposed ranking method satisfies the reasonable prop- erties for the ordering of fuzzy quantities. Some properties such as robustness, order relation have been presented. Lim- itations of existing ranking methods have been studied. Fur- ther for practical use, a new method for selecting the best alternative, for group decision making problems is proposed. This method is illustrated with a numerical example.
文摘In this article, we have pointed out that some propositions corresponding to the distance measure between the type-2 fuzzy sets (T2FSs) as provided by Singh (Frontiers of Computer Science, 2014, 8(5), 741-752), are incorrect by a counterexample. Further, these propositions have been corrected in the present manuscript by giving a correct relation between the T2FSs and validating it with a numerical example.
文摘针对废旧汽车发动机再制造过程绿色经济效益评价指标之间存在相互影响、相互关联的情况,引入决策试验和评价实验室(Decision-Making Trial and Evaluation Laboratory,DEMATEL)法以及基于2-可加模糊测度的Choquet积分法进行综合评价。首先,对废旧汽车发动机再制造过程绿色经济效益的影响因素进行剖析,在此基础上构建了一套较为科学合理的绿色经济效益评价指标体系;其次,利用DEMATEL法来识别指标之间的相互影响关系,并以此来确定指标权重;然后,考虑到指标之间存在相互关联的情况,利用基于2-可加模糊测度的Choquet积分法来计算绿色经济效益评价值;最后,选取4家再制造公司进行实证分析,以验证所构建方法的可行性和有效性。研究表明,所构建方法可以考虑到指标之间相互影响、相互关联的情况,因此能够得到较为准确的评价结果。