Wang, Yongqiao; Wang, Shouyang; Dang, Chuangyin; Ge, Wenxiu - In: European Journal of Operational Research 232 (2014) 3, pp. 671-678
This paper proposes a shape-restricted nonparametric quantile regression to estimate the τ-frontier, which acts as a benchmark for whether a decision making unit achieves top τ efficiency. This method adopts a two-step strategy: first, identifying fitted values that minimize an asymmetric...