IVFNs of linguistic variables for rating of alternatives.

IVFNs of linguistic variables for rating of alternatives.</p

Membership functions of triangular interval-valued fuzzy number.

Membership functions of triangular interval-valued fuzzy number.</p

Overall grey relational grades and ranking.

Overall grey relational grades and ranking.</p

Subjective weights based on the averaging score method.

Subjective weights based on the averaging score method.</p

Overall grey relational coefficients.

Overall grey relational coefficients.</p

Defuzzified decision matrix for rating of alternatives.

Defuzzified decision matrix for rating of alternatives.</p

Evaluation criteria of five dimensions and sub-criteria of SERVPERF.

Evaluation criteria of five dimensions and sub-criteria of SERVPERF.</p

Objective weights based on entropy measure.

Objective weights based on entropy measure.</p

Linguistic variables for rating of alternatives.

Linguistic variables for rating of alternatives.</p

Comparability sequence for each criterion.

Comparability sequence for each criterion.</p