Reference health
Interval Valued Spherical Fuzzy Aggregation Operators and Their Application in Decision Making Problem
2 of 23 checkable references need attention · checked 2026-08-10
At the dated check, the references listed below either did not resolve in Crossref or DataCite, or carried a retraction notice. Each one is shown with the registry record that put it there.
16 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.
References needing attention
does not resolve to a known work10.3233/JIFS-81941
marked retracted — notice via Crossref, record curated by Retraction Watch10.3233/JIFS-182540
RETRACTED: A new fuzzy entropy on Pythagorean fuzzy sets
The 21 checked references that resolve
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Spherical fuzzy Dombi aggregation operators and their application in group decision making problems
resolves10.1007/s41066-019-00156-8
Improved composite relation for pythagorean fuzzy sets and its application to medical diagnosis
resolves10.1016/j.fss.2010.04.004
Generalized Bonferroni mean operators in multi-criteria aggregation
resolves10.13189/ms.2014.020202
New Operations over Interval Valued Intuitionistic Hesitant Fuzzy Set
resolves10.1615/Int.J.UncertaintyQuantification.2018020979
HESITANT PYTHAGOREAN FUZZY SETS AND THEIR AGGREGATION OPERATORS IN MULTIPLE ATTRIBUTE DECISION-MAKING
resolves10.3846/20294913.2016.1181684
THE SPHERICAL DISTANCE FOR INTUITIONISTIC FUZZY SETS AND ITS APPLICATION IN DECISION ANALYSIS
resolves10.1016/j.engappai.2019.06.003
A novel fuzzy TOPSIS method using emerging interval-valued spherical fuzzy sets
resolves10.1007/s40747-018-0084-x
New similarity measure and distance measure for Pythagorean fuzzy set
resolves10.3233/JIFS-181922
The cosine similarity measures of spherical fuzzy sets and their applications in decision making
resolves10.1007/s00500-019-03993-6
Correlation coefficients for T-spherical fuzzy sets and their applications in clustering and multi-attribute decision making
resolves10.3390/math7010001
On Generalized Closed Sets and Generalized Pre-Closed Sets in Neutrosophic Topological Spaces
resolves10.1016/j.ijar.2009.06.004
On generalized Bonferroni mean operators for multi-criteria aggregation
The 16 references without a DOI — listed, not checked
no DOI — not checkedAshraf S, Abdullah S (2018) Spherical aggregation operators and their application in multi attribute group decision making. Int J Intell Syst 1–31
no DOI — not checkedAtanassov KT (2017) Type-1 fuzzy sets and intuitionistic fuzzy sets. Algorithms 106:1–12
no DOI — not checkedDominguez LP, Picon LAR, Iniesta AA, Cruz DL, Xu Z (2018) MOORA under Pythagorean fuzzy set for multiple criteria decision making. Complexity 2018:1–10
no DOI — not checkedEjegwa PA, Akowe SO, Otene PM, Ikyule JM (2014) An overview on intuitionistic fuzzy sets. Int J Sci Technol 3(3):142–144
no DOI — not checkedGarg H, Munir M, Ullah K, Mahmood T, Jan N (2018) Algorithm for T-spherical fuzzy multi-attribute decision making based on improved interactive aggregation operators. Symmetry 10(670):1–24
no DOI — not checkedJamkhaneh EB (2016) New operations over generalized interval valued intuitionistic fuzzy sets. Gazi Univ J Sci 29(3):667–674
no DOI — not checkedJin H, Ashraf S, Abdullah S, Qiyas M, Bano M, Zeng S (2019) Linguistic spherical fuzzy aggregation operators and their applications in multi-attribute decision making problems. Mathematics 7(413):1–22
no DOI — not checkedLi and Feng (2013) Intuitionistic (λ, μ)-fuzzy sets in Γ—semigroups. J Inequal Appl 2013(107):1–9
no DOI — not checkedPeng X (2018b) New operations for interval-valued pythagorean fuzzy set. Sci Iran 26(2):1049–1076
no DOI — not checkedQin J, Liu X (2014) Frank aggregation operators for triangular interval type-2 fuzzy set and its application in multiple attribute group decision making. J Appl Math 2014(3):1–24
no DOI — not checkedRahman K, Abdullah S, Khan MSA, Ibrar M, Husain E (2017) Some basic operations on Pythagorean fuzzy sets. J Appl Environ Biol Sci 7(1):111–119
no DOI — not checkedRajesh K, Srinivasan R (2017a) A study on some operators over interval valued intuitionistic fuzzy sets of second type. Int J Innov Res Sci Eng Technol 6(11):21051–21057
no DOI — not checkedRajesh K, Srinivasan R (2017b) Interval valued intuitionistic fuzzy sets of second type. Adv Fuzzy Math 12(4):845–853
no DOI — not checkedSunny T, Jose SM (2019) Boxdot and star products on interval-valued intuitionistic fuzzy graphs. Int J Innov Technol Explor Eng (IJITEE). 8(7):1238–1242
no DOI — not checkedUllah K, Mahmood T, Jan N (2018) Similarity measures for T-spherical fuzzy sets with applications in pattern recognition. Symmetry 10(193):1–14
no DOI — not checkedZeng S, Hussain A, Mahmood T, Ali MI, Ashraf S, Munir M (2019) Covering-based spherical fuzzy rough set model hybrid with TOPSIS for multi-attribute decision-making. Symmetry 11(547):1–19
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