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Iraq T. Abbas

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Open access Aug 2026

Development of the hesitant fuzzy weighted averaging–geometricaggregation operator (HFW-AG) under hesitant fuzzy information

The hesitant fuzzy set (HFS) framework has been widely used in multi-criteria group decision-making (MCGDM) to represent uncertainty and hesitation in decision-makers' assessments. However, existing hesitant fuzzy aggregation operators often rely solely on either averaging or geometric aggregation mechanisms, which may...

Rafi Raza, Ahmad Termimi Bin Ab Ghani, Iraq T. Abbas et al. · 0 citations
Open access Jul 2026

A Hybrid Genetic Algorithm and Cat Swarm Optimization for Solving the Quadratic Assignment Problem

Since the cost function of the Quadratic Assignment Problem (QAP) is quadratic and its solution space expands linearly, this problem is computationally challenging. In other words, any problem that can be solved by an exact method on one medium- to large-scale instance should be practically intractable in general for t...

Firas Abdullah Attia, Iraq T. Abbas, R. A. Rahman · 0 citations

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