[Test()] public void TestColumnAverage()
{
var matrix = new Matrix <double>(5, 5);
double[] row = { 1, 2, 3, 4, 5 };
for (int i = 0; i < 5; i++)
{
matrix.SetRow(i, row);
}
Assert.AreEqual(2.0, MatrixUtils.ColumnAverage(matrix, 1));
Assert.AreEqual(5.0, MatrixUtils.ColumnAverage(matrix, 4));
}
///
public override void LearnAttributeToFactorMapping()
{
this.factor_bias = new double[num_factors];
for (int i = 0; i < num_factors; i++)
{
factor_bias[i] = MatrixUtils.ColumnAverage(item_factors, i);
Console.Error.WriteLine("fb {0}: {1}", i, factor_bias[i]);
}
this.attribute_to_factor = new Matrix <double>(NumItemAttributes, num_factors);
MatrixUtils.InitNormal(attribute_to_factor, InitMean, InitStdev);
for (int i = 0; i < num_iter_mapping; i++)
{
IterateMapping();
}
_MapToLatentFactorSpace = Utils.Memoize <int, double[]>(__MapToLatentFactorSpace);
}
