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An improved composite relation and its application in deciding patients medical status based on a q-rung orthopair fuzzy information

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Abstract

A q-rung orthopair fuzzy set is a generalized orthopair fuzzy set which is well equipped to tackle vague problems which cannot be addressed by other orthopair fuzzy sets like intuitionistic fuzzy set, Pythagorean fuzzy set, and Fermatean fuzzy set. On the other hand, composite relation is a vital information measure which is used to determine multiple criteria decision-making problems based on generalized fuzzy sets. This paper proposes an improved composite relation under q-rung orthopair fuzzy sets and studies the alpha-cuts of q-rung orthopair fuzzy sets. An algorithm which shows the steps of determining the composite relation between q-rung orhopair fuzzy sets based on the proposed q-rung orthopair fuzzy composite relation is given. Some numerical examples are given to comparatively show the superiority of the improved q-rung orthopair fuzzy composite relation over existing composite relation. To demonstrate the application of the new composite relation under q-rung orthopair fuzzy sets, we discuss the determination of patients medical status where diseases and patients are represented as q-rung orthopair fuzzy values in the feature space of some clinical manifestations.

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Authors and Affiliations

  1. Department of Mathematics, University of Agriculture, P.M.B. 2373,, Makurdi, Nigeria

    Paul Augustine Ejegwa

  2. Department of Mathematics, Yazd University, P.O Box 89195-741, Yazd, Iran

    Bijan Davvaz

Authors
  1. Paul Augustine Ejegwa
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  2. Bijan Davvaz
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Correspondence to Paul Augustine Ejegwa.

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Communicated by Regivan Hugo Nunes Santiago.

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Ejegwa, P.A., Davvaz, B. An improved composite relation and its application in deciding patients medical status based on a q-rung orthopair fuzzy information. Comp. Appl. Math. 41, 303 (2022). https://doi.org/10.1007/s40314-022-02005-y

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