Many problems of society, including those relating to energy use, air pollution and solid-waste disposal, seem amenable to formulation using the techniques of the rapidly growing field of graph theory, in particular, the notion of a signed digraph (directed graph). This paper outlines a...

This paper describes some of the author's work on developing a methodology for building and analyzing an energy demand signed digraph using the subjective judgements of groups of experts. The method is illustrated using energy consumption in the transportation sector, in particular in the...