Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Workload Equity in Vehicle Routing: The Impact of Alternative Workload
  Resources   In practical vehicle routing problems (VRPs), important non-monetary benefits
can be achieved with more balanced operational plans which explicitly consider
workload equity. This has motivated practitioners to include a wide variety of
balancing criteria in decision support systems, and researchers to examine the
properties of these criteria and the trade-offs made when optimizing them. As a
result, previous studies have provided a much-needed understanding of how
different equity functions affect the resulting VRP solutions. However, by
focusing exclusively on models which balance tour lengths, a critical aspect
has thus far remained unexplored -- namely the impact of the workload resource
subject to the balancing.
  In this work, we generalize previous studies to different workload resources,
extend the scope of those analyses to additional aspects of managerial and
methodological significance, and reevaluate accordingly previous conclusions
and guidelines for formulating a balance criterion. We propose a classification
of workload resources and equity functions, and establish which general types
of balanced VRP models can lead to unintended optimization outcomes. To explore
in greater detail the differences between models satisfying the given
guidelines, we conduct an extensive numerical study of 18 alternative balance
criteria. We base our observations not only on smaller instances solved to
optimality, but also on larger instances solved heuristically, to gauge the
extent to which our conclusions hold also for larger VRPs.
  Overall, our study counter-balances the focus of previous works and reveals
the importance of selecting the right workload resource.

34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat