Extension cards
Forms of the base methods for different data types. Each card describes only the difference: cell format, scale alignment, distance or score, how to read the output; for philosophy and mechanics see the base method card, for the family see the data type card.
PROMETHEE
Base method →- PROMETHEE I (Brans, Vincke & Mareschal, 1986)ClassicalThis is the form within the PROMETHEE family that keeps the incoming and outgoing flows separate rather than merging them into a single net flow, and honestly leaves some pairs of alternatives "incomparable." Its output is not a complete ranking but a partial dominance relation.
- PROMETHEE III (Brans, Vincke & Mareschal, 1986)ClassicalThis is the form within the PROMETHEE family that presents every alternative's net flow not as a single number but as a confidence interval. Two alternatives are ranked strictly only if their intervals do not overlap; if the intervals overlap, the two are treated as indifferent.
- PROMETHEE VI (Brans & Mareschal, 1995)ClassicalThis is the form of PROMETHEE that turns the ranking into an interval for situations where the weights are not known exactly. Every alternative's net flow is not a single number but the lowest and highest value it can take while the weights vary within a plausible band.
ELECTRE
Base method →- Data envelopment analysis BCC (variable returns to scale) (Banker, Charnes & Cooper, 1984)ClassicalThis is the form of DEA for situations where the units being compared differ in size and that size difference must not distort the efficiency comparison. The output remains an efficiency score, together with every unit's returns-to-scale classification (advantaged at small scale, or at large scale).
- DEA cross-efficiency (Sexton, Silkman & Hogan, 1986)ClassicalThis is the form of DEA where every unit is evaluated not only by its own chosen weights but also by every other unit's chosen weights, with units scoring one another reciprocally. The output is a single cross-efficiency average for every unit, and this average places the units in a complete ranking.
- DEA Range-Adjusted Measure of Inefficiency (RAM) (Cooper, Park and Pastor, 1999)ClassicalRAM is a form of DEA that measures and sums, separately for each measure against its own value range, the input excess and output shortfall that a classical radial (percentage) score can overlook. The output is again an inefficiency score between 0 and 1, but this score captures not only the proportional contraction but also any remaining slack.
- Slacks-Based Measure DEA (SBM) (Tone, 2001)ClassicalSBM is a form of DEA that, instead of a classical proportional contraction ratio, directly measures every input excess and output shortfall on its own scale. The result is again an efficiency score between 0 and 1, but this score rests not on a ratio but directly on the slack share.
- Super-Efficiency DEA (Andersen and Petersen, 1993)ClassicalSuper-efficiency DEA is a form that allows units classical DEA rates as equally "efficient" (theta=1) to be ranked amongst themselves as well. Each unit is re-evaluated with its own data excluded from the reference set; this brings out a degree of superiority even among efficient units.