OCRA: Operational Competitiveness Rating

Overview

Preference rating (input/output separation). Output typically utility (higher value = preferred).

Strengths

• •Method-specific: Preference rating (input/output separation)

Limitations

• •Assumes: Criteria preferences are independent (no synergistic interactions)
• •Assumes: Compensation is acceptable: high score on one criterion can offset low on another
• •Assumes: Decision matrix is complete (no missing values)

Assumptions to verify

• •Criteria preferences are independent (no synergistic interactions)
• •Compensation is acceptable: high score on one criterion can offset low on another
• •Decision matrix is complete (no missing values)

When not to use

• •Criteria strongly correlated → consider DEMATEL/ANP for interdependence
• •Non-compensatory preferences → consider outranking (ELECTRE/PROMETHEE)

Edge cases

• •See F.steps and D.parameters for OCRA-specific edge handling. recommendation_metadata.assumptions_to_verify also lists boundary conditions.

Common pitfalls

• •Hatalı: 'OCRA bu varsayımı kontrol etmeden uygulamak'. Doğrusu: Criteria preferences are independent (no synergistic interactions)
• •Hatalı: 'OCRA bu varsayımı kontrol etmeden uygulamak'. Doğrusu: Compensation is acceptable: high score on one criterion can offset low on another
• •Hatalı: 'OCRA bu varsayımı kontrol etmeden uygulamak'. Doğrusu: Decision matrix is complete (no missing values)
• •Hatalı: OCRA'yi 'Criteria strongly correlated → consider DEMATEL/ANP for interdependence' durumunda kullanmak: recommendation_metadata.not_recommended_when alternatif öneriyor.
• •Hatalı: OCRA'yi 'Non-compensatory preferences → consider outranking (ELECTRE/PROMETHEE)' durumunda kullanmak: recommendation_metadata.not_recommended_when alternatif öneriyor.

Worked example

1. 1.Adım 1 (F1): Step 1: Aggregated input (cost) preference Ī_i. Formül: \bar{I}_{i} = \sum_{j\in J^{-}} w_{j} \dfrac{\max_{k} x_{kj} - x_{ij}}{\min_{k} x_{kj}} Anchor: Parkan 1994, p.6 Eq.(1)
2. 2.Adım 2 (F2): Step 2: Aggregated output (benefit) preference Ō_i. Formül: \bar{O}_{i} = \sum_{j\in J^{+}} w_{j} \dfrac{x_{ij} - \min_{k} x_{kj}}{\min_{k} x_{kj}} Anchor: Parkan 1994, p.6 Eq.(2)
3. 3.Adım 3 (F3): Step 3: Overall preference P_i = (Ī_i − min Ī) + (Ō_i − min Ō) − min[(Ī_i − min Ī) + (Ō_i − min Ō)]. Formül: P_{i} = \big(\bar{I}_{i} - \min_{k}\bar{I}_{k}\big) + \big(\bar{O}_{i} - \min_{k}\bar{O}_{k}\big) - \min_{i'}\big[\cdot\big] Anchor: Parkan 1994, p.7 Eq.(3)

Commonly paired with

• •AHP + OCRA (high)
• •BWM + OCRA (high)
• •ENTROPY + OCRA (high)
• •CRITIC + OCRA (high)
• •SWARA + OCRA (high)

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