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A dataset supporting a new mixed-integer nonlinear programming model for Data Envelopment Analysis (DEA). The model identifies a subset of k outstanding decision-making units from n units within a centralized system, eliminating predefined constants to guarantee feasibility and boundedness. The dataset, shared by Zahra Cheraghali on figshare under a CC-BY-4.0 license, was last updated in May 2026.
The data is provided in an XLS (Excel) format, requiring compatible software to open.