Harmonic averaging operators of four parameters interval numbers and applications to decision making
Ordered weighted harmonic averaging operator of four parameters interval numbers(CFPOWHA) are defined and ordered weighted harmonic averaging operator of three parameters interval numbers(CP-OWHA) are generalized.Based on CFP-OWHA operator,weighted CFP-OWHA (WCFP-OWHA) operator,ordered weighted CFP-OWHA(OWCFP-OWHA) operator,combined CFP-OWHA (CCFP-OWHA) operator are defined.Generalized weighted CFP-OWHA (GWCFPOWHA) operator,generalized ordered weighted CFP-OWHA (GOWCFP-OWHA) operator and generalized combined CFP-OWHA(GCCFP-OWHA) operator are proposed,in which WCFP-OWHA operator,OWCFP-OWHA operator and CCFP-OWHA operator are generalized.Natures of these operators are discussed.Then,decision making method using harmonic averaging operator of four parameters interval numbers is proposed.Lastly,an applied example is used to illustrate feasibility of the decision making method.