Line Optimization in Public Transport

[Marika-K]

Description

A new optimod for line optimization in public transport.

There is currently no issue for this optimod but it is related to Network Design Optimod #36

Checklist

• Implementation:
  • Implementation of the Mod in the gurobi_optimods installable package
  • Tests for the Mod implementation in tests/
  • Docstrings for public API, correctly linked using sphinx-autodoc
• Documentation page:
  • Background and problem specification
  • Example of the input data format (use gurobi_optimods.datasets for loading data)
  • Runnable code example
  • Presentation of solutions
  • Included in the mod gallery and toctree

Have a nice day!

[simonbowly]

This looks awesome, thanks for the great work @Marika-K! The multi-objective component is a particularly nice feature.

@stevedwards in applications terms I think this quite different from the network design mod, and it would make sense to have both of them in the library separately. Thoughts?

[stevedwards]

Yeah, this is super, super nice. Love everything about it. The level of abstraction is perfect for an optimod. Yeah @simonbowly totally makes sense to have them separately. Great work @Marika-K

[Marika-K]

Thanks! I am happy that this Optimod fits.
Do you know what the problem with test_portfolio.py could be?

[simonbowly]

Looks like a numerics problem, happens from time to time with that mod. It looks like all your tests are passing so nothing to worry about. Just mark this PR "ready for review" when ready!

[simonbowly]

@Marika-K thanks for the great work, and sorry for the delay. I added a couple of comments.

I also did a little polishing of the introduction text, could you check that my changes look ok there?

[simonbowly]

I added a few more comments. After these, I think it's good to go!

[Marika-K]

Thanks, Simon!
I updated the code and added some more exception handling. If you do not see any issues, I think I am done.

[simonbowly]

Looks good, thanks!

[simonbowly]

And again, great work @Marika-K! This is a really nice addition :-)