additiveDEA

Provides functions for calculating efficiency with two types of additive Data Envelopment Analysis models: (i) Generalized Efficiency Measures: unweighted additive model (Cooper et al., 2007 doi:10.1007/978-0-387-45283-8), Range Adjusted Measure (Cooper et al., 1999, doi:10.1023/A:1007701304281), Bounded Adjusted Measure (Cooper et al., 2011 doi:10.1007/s11123-010-0190-2), Measure of Inefficiency Proportions (Cooper et al., 1999 doi:10.1023/A:1007701304281), and the Lovell-Pastor Measure (Lovell and Pastor, 1995 doi:10.1016/0167-6377(95)00044-5); and (ii) the Slacks-Based Measure (Tone, 2001 doi:10.1016/S0377-2217(99)00407-5). The functions provide several options: (i) constant and variable returns to scale; (ii) fixed (non-controllable) inputs and/or outputs; (iii) bounding the slacks so that unrealistically large slack values are avoided; and (iv) calculating the efficiency of specific Decision-Making Units (DMUs), rather than of the whole sample. Package additiveDEA also provides a function for reducing computation time when datasets are large.

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