model_rdm function

Range directional model.

Range directional model from Portela et al. (2004).

model_rdm(datadea,
            dmu_eval = NULL,
            dmu_ref = NULL,
            orientation = c("no", "io", "oo"),
            irdm = FALSE,
            maxslack = TRUE,
            weight_slack_i = 1,
            weight_slack_o = 1,
            compute_target = TRUE,
            returnlp = FALSE,
            ...)

Arguments

• datadea: A deadata object, including n DMUs, m inputs and s outputs.
• dmu_eval: A numeric vector containing which DMUs have to be evaluated. If NULL (default), all DMUs are considered.
• dmu_ref: A numeric vector containing which DMUs are the evaluation reference set. If NULL (default), all DMUs are considered.
• orientation: A string, equal to "no" (non-oriented), "io" (input oriented), or "oo" (output oriented).
• irdm: Logical. If it is TRUE, it applies the IRDM (inverse range directional model).
• maxslack: Logical. If it is TRUE, it computes the max slack solution.
• weight_slack_i: A value, vector of length m, or matrix m x ne (where ne is the length of dmu_eval) with the weights of the input slacks for the max slack solution.
• weight_slack_o: A value, vector of length s, or matrix s x ne (where ne is the length of dmu_eval) with the weights of the output slacks for the max slack solution.
• compute_target: Logical. If it is TRUE, it computes targets of the max slack solution.
• returnlp: Logical. If it is TRUE, it returns the linear problems (objective function and constraints) of stage 1.
• ...: Ignored, for compatibility issues.

Note

Undesirable inputs/outputs are treated as negative inputs/outputs in this model.

References

Portela, M.; Thanassoulis, E.; Simpson, G. (2004). "Negative data in DEA: a directional distance approach applied to bank branches", Journal of the Operational Research Society, 55 1111-1121.

Author(s)

Vicente Coll-Serrano (vicente.coll@uv.es ). Quantitative Methods for Measuring Culture (MC2). Applied Economics.

Vicente Bolós (vicente.bolos@uv.es ). Department of Business Mathematics

Rafael Benítez (rafael.suarez@uv.es ). Department of Business Mathematics

University of Valencia (Spain)