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<p>The growing complications and inconsistencies in sustainable development evaluations require refined decision-making approaches that analyze vagueness in expert opinions. This research focuses on potential strategies to promote proactive environmental behaviours. This study introduces the algebraic operational laws for interval-valued complex spherical fuzzy soft sets (IVCSFSS) by incorporating membership, neutral membership, and non-membership grades. Also, we extend these laws to the interval-valued complex spherical fuzzy soft weighted average (IVCSFSWA) and interval-valued complex spherical fuzzy soft weighted geometric (IVCSFSWG) operators, along with their properties. A novel multi-criteria group decision-making (MCGDM) technique is developed using the proposed operators. The proposed model facilitates the evaluation of alternatives across various environmental sustainability components, including air quality, biodiversity, land and agriculture, and renewable energy resources. The comparative analysis demonstrates that the IVCSFSS-based methodology outperforms traditional fuzzy and soft set approaches, offering greater flexibility and accuracy in handling environmental sustainability decision problems. The results highlight the applicability of this approach for business, government, and policy decision-makers seeking to address environmental challenges.</p>

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A novel decision analytic model for environmental sustainability challenges using interval-valued complex spherical fuzzy soft sets

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年3月11日

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  • Saalam Ali,
  • Poom Kumam,
  • Hamza Naveed,
  • Rana Muhammad Zulqarnain,
  • Wiyada Kumam,
  • Wimonmas Bamrungsetthapong,
  • Thidaporn Seangwattana

摘要

The growing complications and inconsistencies in sustainable development evaluations require refined decision-making approaches that analyze vagueness in expert opinions. This research focuses on potential strategies to promote proactive environmental behaviours. This study introduces the algebraic operational laws for interval-valued complex spherical fuzzy soft sets (IVCSFSS) by incorporating membership, neutral membership, and non-membership grades. Also, we extend these laws to the interval-valued complex spherical fuzzy soft weighted average (IVCSFSWA) and interval-valued complex spherical fuzzy soft weighted geometric (IVCSFSWG) operators, along with their properties. A novel multi-criteria group decision-making (MCGDM) technique is developed using the proposed operators. The proposed model facilitates the evaluation of alternatives across various environmental sustainability components, including air quality, biodiversity, land and agriculture, and renewable energy resources. The comparative analysis demonstrates that the IVCSFSS-based methodology outperforms traditional fuzzy and soft set approaches, offering greater flexibility and accuracy in handling environmental sustainability decision problems. The results highlight the applicability of this approach for business, government, and policy decision-makers seeking to address environmental challenges.