Questions tagged [logistics]
Logistics refers to the overall process of managing how resources are acquired, stored, and transported to their final destination.
7
questions
2
votes
0
answers
68
views
Multi Commodity VRP Time Windows Paper
I have been wondering is there any paper that who discuss multi commodity with four index/indices like this formulation below:
$$
\begin{gathered}
\sum_{k} \sum_{c} F_{j, j, c, k}=1 \quad \forall j \\
...
- 593
2
votes
0
answers
58
views
Preprocessing Time Windows Width in Vehicle Routing Problem (VRP)
I think my model takes much time because the time windows width given the problem i want to solve.
Here is the time matrix:
...
- 593
3
votes
0
answers
90
views
How to compute the time required to transport one unit of flow on a given path?
My question is related to freight transportation, but I am stuck on the logic. So, I am considering a path between two points $(a, b)$ where I am sending $n$ trucks where the capacity/truck is $k$. ...
- 115
-3
votes
1
answer
54
views
What is dynamic facility location problem ans how to formulate the same? Please help [closed]
Please explain how the problem solution looks like. basically I want model to dynamically give me multiple facility locations for a given demand.
- 35
4
votes
1
answer
315
views
VRP book recommendations
I am looking for a book recommendation on the VRP and variants. I am encountering VRP-like problems more and more in my work and would appreciate a reference.
- 743
26
votes
5
answers
2k
views
What's the current status of the Vehicle Routing Problem in the logistics industry?
After a bit of reading I think I've been able to conclude that state-of-the-art VRP can get solutions for 100~500 stops.
My question is around how this actually affects logistics (like Amazon for ...
- 433
13
votes
2
answers
126
views
Sensible and realistic way to model truck based transport costs depending on amount
Different kinds of problems involve transporting an amount $x$ from A to B which results in a cost $c(x)$ in the objective function.
Traditionally, often linearized costs are used to get an easy, ...
- 1,110