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Model Perspective
Model Perspective
Oct 1, 2022 · Operations

How Variable Returns to Scale DEA Reveals Input/Output Slack in a Two‑Stage Model

This article explains how variable‑returns‑to‑scale input‑oriented and output‑oriented DEA models use input and output slacks, introduces a two‑stage linear programming approach to identify non‑zero slacks, and defines full and weak efficiency through formal DEA definitions and illustrative decision‑unit examples.

DEAefficiencyinput-oriented
0 likes · 6 min read
How Variable Returns to Scale DEA Reveals Input/Output Slack in a Two‑Stage Model
Model Perspective
Model Perspective
Sep 29, 2022 · Operations

Understanding Input‑Oriented DEA: Modeling Efficiency Frontiers

This article explains the input‑oriented Data Envelopment Analysis (DEA) model, detailing its constraints, variables, and interpretation of efficiency scores, and illustrates the method with a five‑decision‑unit example that visualizes the efficient frontier.

DEAefficiency analysisinput-oriented
0 likes · 4 min read
Understanding Input‑Oriented DEA: Modeling Efficiency Frontiers