    double learningRateChangeSoFar = GetLearningRatePerSample(epochNumber /*BUGBUG workaround:*/, trainSetDataReader->GetNumParallelSequencesForFixingBPTTMode()) / GetLearningRatePerSample(0 /*BUGBUG workaround:*/, trainSetDataReader->GetNumParallelSequencesForFixingBPTTMode());
