Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An Optimization Approach to the Ordering Phase of an Attended Home
  Delivery Service   Attended Home Delivery (AHD) systems are used whenever a supplying company
offers online shopping services that require that customers must be present
when their deliveries arrive. Therefore, the supplying company and the customer
must both agree on a time window, which ideally is rather short, during which
delivery is guaranteed. Typically, a capacitated Vehicle Routing Problem with
Time Windows forms the underlying optimization problem of the AHD system. In
this work, we consider an AHD system that runs the online grocery shopping
service of an international grocery retailer. The ordering phase, during which
customers place their orders through the web service, is the computationally
most challenging part of the AHD system. The delivery schedule must be built
dynamically as new orders are placed. We propose a solution approach that
allows to (non-stochastically) determine which delivery time windows can be
offered to potential customers. We split the computations of the ordering phase
into four key steps. For performing these basic steps we suggest both a
heuristic approach and a hybrid approach employing mixed-integer linear
programs. In an experimental evaluation we demonstrate the efficiency of our
approaches.

13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg