Modified PSI method for objective weighting (Modified Preference Selection Index weighting)
MPSI (Modified PSI method for objective weighting (Modified Preference Selection Index weighting)) is a weight objective multi-criteria decision-making (MCDM) method introduced by Maniya, K., Bhatt, M. G. in 2010. It turns a decision matrix of alternatives scored on multiple criteria into a structured, reproducible result.
Key highlights
- Follows a transparent, reproducible computational procedure that can be audited step by step.
- Handles multiple criteria of differing scales and units within a single decision matrix.
Intuition
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How it works
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When to use it
MPSI extracts criterion weights from PSI's Preference Variation Values. Criteria with LOWER Φ_j (less variance, more consistent discrimination) get HIGHER weight. This is counterintuitive — it differs from ENTROPY and CRITIC which give higher weight to higher-variance criteria.
Strengths & limitations
- Follows a transparent, reproducible computational procedure that can be audited step by step.
- Handles multiple criteria of differing scales and units within a single decision matrix.
- Results depend on the chosen normalisation, weights, and parameter settings.
Common pitfalls
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Sources
- 1.Maniya, K., Bhatt, M. G. (2010). A selection of material using a novel type decision-making method: Preference selection index method. Materials & Design
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ScholarGate. (2026, June 2). MPSI. ScholarGate. https://scholargate.app/decision-making/mpsi