Figure 2
The diagram contains a rectangular input node positioned at the left labeled “0” with the label “x” beside it. Three arrows extend rightward from node “0”. The upper arrow leads to a circle positioned at the top center labeled “1” with the label “1 0 superscript x” placed above the arrow. The middle horizontal arrow with the label “3 0 superscript x” leads directly to a circle positioned at the right center labeled “3”. The lower arrow with the label “2 0 superscript x” leads to a circle positioned at the bottom center labeled “2”. From the circle labeled “1”, a diagonal arrow marked “3 1 superscript x” extends downward to the circle labeled “3”. Another horizontal arrow from the circle labeled “1” extends toward the right boundary and then downward to a triangular output node labeled “4”, marked “4 1 superscript y”. From the circle labeled “2”, a diagonal arrow marked “3 2 superscript y” extends upward to the circle labeled “3”. Another horizontal arrow from the circle labeled “2” extends toward the right boundary and then upward to the triangular output node labeled “4”, marked “4 2 superscript y”. From the circle labeled “3”, a horizontal arrow marked “4 3 superscript y” extends toward the triangular output node positioned at the right labeled “4”, with the label “y” appearing beside it. All nodes and arrows appear within a rectangular boundary enclosing the entire diagram.The network DEA model. Source(s): Farè and Grosskopf (2000)