Research Article
Analysis of the Technical Efficiency of Urban Bus Services in Spain Based on SBM Models
Table 1
Frontier methodologies.
| Functional form | Measurement error | Deterministic | Stochastic |
| Parametric | Corrected OLS, and so forth | Frontiers with explicit assumptions (exponential, half normal, etc.) for the technical efficiency distributions | Nonparametric | FDH, DEA-type models, and so forth | Resampling, chance-constrained programming, and so forth |
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Source: [10].
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