Gijbels, Irène; Mammen, Enno; Park, Byeong U.; Simar, … - 1998
When analyzing the productivity of firms, one may want to compare how the firms transform a set of inputs x (typically … labor, energy or capital) into an output y (typically a quantity of goods produced). The economic efficiency of a firm is … inputs. The efficiency of a firm may then be estimated via the distance between the attained production level and the optimal …