Abstract
Data Envelopment Analysis (DEA) is a new category explored in operations research, management, applied mathematics, and finance. Beijing-Tianjin-Hebei coordinated development has become the focus of current national society. In this paper, a total of 13 cities above the prefecture level in Beijing-Tianjin-Hebei region are selected as sample units for decision-making. The total population at the end of the year, regional fixed asset investment, industrial dust emissions, industrial wastewater emissions, and industrial sulfur dioxide emissions were selected as input indicators. The actual GDP is used as the output indicator. Two linear programming models included in the DEA method are adopted: Model and The model, through the collection, screening and use of a large amount of data, uses Matlab programming to calculate the comprehensive technical efficiency, pure technical efficiency and scale efficiency of 13 cities, and evaluates and analyzes the effectiveness of the three efficiency values to correctly judge Beijing and Tianjin.
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