public ParallelSGDFactorizer(IDataModel dataModel, int numFeatures, double lambda, int numEpochs) : base(dataModel)
{
this.dataModel = dataModel;
this.rank = numFeatures + FEATURE_OFFSET;
this.lambda = lambda;
this.numEpochs = numEpochs;
shuffler = new PreferenceShuffler(dataModel);
//max thread num set to n^0.25 as suggested by hogwild! paper
numThreads = Math.Min(Environment.ProcessorCount, (int)Math.Pow((double)shuffler.size(), 0.25));
}
public ParallelSGDFactorizer(DataModel dataModel, int numFeatures, double lambda, int numEpochs)
: base(dataModel)
{
this.mu0 = 0.01;
this.decayFactor = 1.0;
this.stepOffset = 0;
this.forgettingExponent = 0.0;
this.biasMuRatio = 0.5;
this.biasLambdaRatio = 0.1;
this.epoch = 1;
this.dataModel = dataModel;
this.rank = numFeatures + FEATURE_OFFSET;
this.lambda = lambda;
this.numEpochs = numEpochs;
this.shuffler = new PreferenceShuffler(dataModel);
this.numThreads = Math.Min(Environment.ProcessorCount, (int)Math.Pow((double)this.shuffler.size(), 0.25));
}
public ParallelSGDFactorizer(IDataModel dataModel, int numFeatures, double lambda, int numEpochs) : base(dataModel)
{
this.dataModel = dataModel;
this.rank = numFeatures + FEATURE_OFFSET;
this.lambda = lambda;
this.numEpochs = numEpochs;
shuffler = new PreferenceShuffler(dataModel);
//max thread num set to n^0.25 as suggested by hogwild! paper
numThreads = Math.Min(Environment.ProcessorCount, (int) Math.Pow((double) shuffler.size(), 0.25));
}
