bwfbowen / l2t

Source code for Learn to Tour

L2T

Source code for Learn to Tour: Operator Design For Feasible Solution Mapping

Data

The default path to data instances is data/tsppdlib/instances/random-uniform, which is from TSPPD Test Instance Library. Or you could use --instance_dir to customize the directory path.

.
├── L2T
│   ├── src
│   ├── data
│   │   ├── tsppdlib
│   │   │   ├── instances
│   │   │   │   ├── random-uniform
│   │   │   │   |   ├──random-002-00232.tsp
│   │   │   │   |   └──...
│   └── main.py
└── U
│   ├──random-002-00232.2360.tour
|   └──...

You could also provide the path to LKH3 results, which will be used for comparison during the training. It can be downloaded from its website. The results are located at TOURS/U

To run the code, you could run main.py:

python main.py --num_O 5 -et 10000 -el 10000 --episode 10 --n_steps 2000 --n_gradient_steps 20 -lr 1e-3 --batch_size 1000 --lkh3_dir ../U --ortools_dir None