/// <summary>
/// Parses a random forest from a weka output file
/// </summary>
public static RandomForest FromWekaFile(string file)
{
var output = new RandomForest(new HashSet <string>(s_classLabels));
var reader = new StreamReader(file);
int id = 0;
string line;
while ((line = reader.ReadLine()) != null)
{
// keep reading until we find one of these. This one is followed
// by another line with equal signs and then empty lines until we find the first text
if (line.StartsWith("RandomTree"))
{
++id;
string firstLine;
reader.ReadLine();
while ((firstLine = reader.ReadLine()).Trim().Length == 0)
{
continue;
}
// now, we can start reading the tree
output.Trees.Add(RandomTree.FromStream(reader, firstLine, DefaultPrecision, id));
}
}
reader.Close();
return(output);
}
private void LoadClassifier(ContentPlacementClassifierConfiguration config)
{
Contract.Requires(Directory.Exists(config.QueueToMachineMapDirectory), $"QueToMachineMapDirectory directory [{config.QueueToMachineMapDirectory}] does not exists");
Contract.Requires(Directory.Exists(config.QueueDistanceMapDirectory), $"QueueDistanceMapDirectory directory [{config.QueueDistanceMapDirectory}] does not exists");
Contract.Requires(File.Exists(config.RandomForestFile), $"RandomForestFile [{config.RandomForestFile}] does not exists");
// load the forest
m_forest = RandomForest.FromWekaFile(config.RandomForestFile);
// now load the alternatives per queue
LoadAlternativesPerQueue(config);
// done
}