/// <summary>
/// Creates the list of instances to train on using .mps files in the given directory.
/// </summary>
/// <param name="pathToInstanceFolder">Path to the folder containing the instance .mps files.</param>
/// <param name="numSeedsToUse">The number of seeds.</param>
/// <param name="rngSeed">The random number generator seed.</param>
/// <returns>
/// The created list.
/// </returns>
public static List <InstanceSeedFile> CreateInstances(string pathToInstanceFolder, int numSeedsToUse, int rngSeed)
{
try
{
// Find all .mps files in directory and set them as instances.
var instanceDirectory = new DirectoryInfo(pathToInstanceFolder);
var instanceSeedCombinations = new List <string>();
var instanceSeedFiles = new List <InstanceSeedFile>();
foreach (var instanceFilePath in instanceDirectory.EnumerateFiles()
.Where(file => file.Extension.ToLower() == ".mps"))
{
var fileAndSeedCsv = instanceFilePath.FullName;
foreach (var seed in GurobiUtils.SeedsToUse(numSeedsToUse, rngSeed))
{
instanceSeedFiles.Add(new InstanceSeedFile(instanceFilePath.FullName, seed));
fileAndSeedCsv += $";{seed}";
}
instanceSeedCombinations.Add(fileAndSeedCsv);
}
GurobiUtils.DumpFileSeedCombinations(instanceDirectory, instanceSeedCombinations);
return(instanceSeedFiles);
}
catch (Exception e)
{
Console.Out.WriteLine(e.Message);
Console.Out.WriteLine("Cannot open folder.");
throw;
}
}
