internal int UpdateFeatures(int pid, int step, Schedule jssp)
{
LinearModel dummy = new LinearModel();
foreach (var p in Preferences[pid - 1, step])
{
var lookahead = jssp.Clone();
p.Feature = lookahead.Dispatch1(p.Dispatch.Job, FeatureMode, dummy);
}
return Preferences[pid - 1, step].Count;
}
public void GetGlobalPhi(Schedule current, LinearModel model)
{
Schedule lookahead;
for (int i = 0; i < SDRData.SDRCount; i++)
{
SDRData.SDR sdr = (SDRData.SDR) i;
if (!(Math.Abs(model.GlobalWeights[(int) sdr][0]) > LinearModel.WEIGHT_TOLERANCE)) continue;
lookahead = current.Clone();
lookahead.ApplySDR(sdr);
PhiGlobal[(int) (Global) (sdr)] = lookahead.Makespan;
}
if ((Math.Abs(model.GlobalWeights[(int) Global.RNDmin][0]) < LinearModel.WEIGHT_TOLERANCE) &&
(Math.Abs(model.GlobalWeights[(int) Global.RNDmax][0]) < LinearModel.WEIGHT_TOLERANCE) &&
(Math.Abs(model.GlobalWeights[(int) Global.RNDstd][0]) < LinearModel.WEIGHT_TOLERANCE) &&
(Math.Abs(model.GlobalWeights[(int) Global.RNDmean][0]) < LinearModel.WEIGHT_TOLERANCE)) return;
for (int i = 0; i < RND.Length; i++)
{
lookahead = current.Clone();
lookahead.ApplySDR(SDRData.SDR.RND);
RND[i] = lookahead.Makespan;
}
PhiGlobal[(int) Global.RNDmin] = RND.Min();
PhiGlobal[(int) Global.RNDmax] = RND.Max();
PhiGlobal[(int) Global.RNDmean] = RND.Average();
PhiGlobal[(int) Global.RNDstd] = StandardDev(RND, PhiGlobal[(int) Global.RNDmean]);
}
private List<Preference> FindFeaturesForAllJobs(Schedule jssp, GurobiJspModel gurobiModel)
{
Preference[] prefs = new Preference[jssp.ReadyJobs.Count];
for (int r = 0; r < jssp.ReadyJobs.Count; r++)
{
Schedule lookahead = jssp.Clone();
Features phi = lookahead.Dispatch1(jssp.ReadyJobs[r], FeatureMode, null); // commit the lookahead
prefs[r] = new Preference(lookahead.Sequence[lookahead.Sequence.Count - 1], phi);
// need to optimize to label featuers correctly -- this is computationally intensive
gurobiModel.Lookahead(prefs[r].Dispatch, out prefs[r].ResultingOptMakespan);
prefs[r].SimplexIterations = gurobiModel.SimplexIterations;
}
return prefs.ToList();
}