The purpose
here is not to identify the best solution procedure
for each of these ‘‘adjective’’ APs. Papers describing
new solution procedures appear constantly in
the literature and are of interest primarily to those
whose interest is in designing improved methods
for these models solution. A fairly recent survey
of solution procedures, particularly those for the
classic AP, may be found in DellAmico and Martello. Rather, our purpose is to simply make
researchers and analysts aware of what these variations
are so that they can more easily determine
which variation most closely matches their current
problem. Thus, the remainder of this paper will be
a series of brief descriptions of the various ‘‘adjective’’
APs identified, along with one or more references
to each and, where possible, examples of the
types of problems that they have been developed to
address. In addition, to make it easier to read this
paper, the notation used in the cited sources has,
where necessary, been changed to try to make it
as consistent as possible with the notation to be
used in the presentation of the original or classic
AP in the next section.