Portfolio selection and risk investment under the hesitant fuzzy environment

作者：

Highlights：

• Portfolio selection approaches based on the hesitant fuzzy information are proposed.

• For general risk investors, we develop two optimal portfolio selection models.

• Two trisection approaches are developed to distinguish three types of risk investors.

• The investment opportunities and efficient frontier of these models are investigated.

• Two portfolio selection processes are provided for qualitative risk investment.

摘要

•Portfolio selection approaches based on the hesitant fuzzy information are proposed.•For general risk investors, we develop two optimal portfolio selection models.•Two trisection approaches are developed to distinguish three types of risk investors.•The investment opportunities and efficient frontier of these models are investigated.•Two portfolio selection processes are provided for qualitative risk investment.

论文关键词：Portfolio selection,Risk investment,Qualitative portfolio model,Optimal investment ratio,Hesitant fuzzy element

论文评审过程：Received 5 October 2016, Revised 16 December 2017, Accepted 19 December 2017, Available online 19 December 2017, Version of Record 14 February 2018.

论文官网地址：https://doi.org/10.1016/j.knosys.2017.12.020