ABSTRACT
J for the population considered and which measures the attractiveness or relative advantages associated with the choice of j. In many applications v. will consist either of a term for
J the cost of access to alternative j (eg cost of transport) or a term for the specific attractiveness of j (eg the dimensions of the shopping centre capacity, etc). However, from the theoretical point of view, which is what interests us here, such a distinction and disaggregation is not relevant, so we can consider a single numerical value for vj which will be referred to as the utility of alternative j.
