The purpose of this paper is to briefly trace the evolution of DEA from the initial publication by Charnes et al. (1978b) to the current state of the art (SOA). The state of development of DEA is characterized at four points in time to provide a perspective in both directions-past and f&ue. An evolution map is provided which illustrates DEA growth during the 17year period, the timing of the major events, and the interconnections and influences between topics. An extensive DEA bibliogmphy is provided.