public void CalculateEuclideanCentroid()
{
// Init input gene arrays.
var connGenes1 = new ConnectionGenes <double>(6);
connGenes1[0] = (0, 1, 1.0);
connGenes1[1] = (0, 2, 2.0);
connGenes1[2] = (2, 2, 3.0);
connGenes1[3] = (2, 4, 4.0);
connGenes1[4] = (2, 5, 5.0);
connGenes1[5] = (3, 0, 6.0);
var connGenes2 = new ConnectionGenes <double>(8);
connGenes2[0] = (0, 1, 10.0);
connGenes2[1] = (0, 3, 20.0);
connGenes2[2] = (2, 2, 30.0);
connGenes2[3] = (2, 3, 40.0);
connGenes2[4] = (2, 5, 50.0);
connGenes2[5] = (2, 6, 60.0);
connGenes2[6] = (3, 0, 70.0);
connGenes2[7] = (4, 5, 80.0);
var connGenes3 = new ConnectionGenes <double>(2);
connGenes3[0] = (2, 5, 100.0);
connGenes3[1] = (10, 20, 200.0);
var arr = new ConnectionGenes <double>[] { connGenes1, connGenes2, connGenes3 };
// Calc centroid.
ConnectionGenes <double> centroid = DistanceMetricUtils.CalculateEuclideanCentroid(arr);
// Expected centroid.
var expected = new ConnectionGenes <double>(11);
expected[0] = (0, 1, 11 / 3.0);
expected[1] = (0, 2, 2 / 3.0);
expected[2] = (0, 3, 20 / 3.0);
expected[3] = (2, 2, 33 / 3.0);
expected[4] = (2, 3, 40 / 3.0);
expected[5] = (2, 4, 4 / 3.0);
expected[6] = (2, 5, 155 / 3.0);
expected[7] = (2, 6, 60 / 3.0);
expected[8] = (3, 0, 76 / 3.0);
expected[9] = (4, 5, 80 / 3.0);
expected[10] = (10, 20, 200 / 3.0);
Assert.True(SpanUtils.Equal <DirectedConnection>(expected._connArr, centroid._connArr));
Assert.True(ArrayTestUtils.ConponentwiseEqual(expected._weightArr, centroid._weightArr, 1e-6));
}
/// <summary>
/// Calculates the centroid for a set of points.
/// </summary>
/// <param name="pointList">The set of points.</param>
/// <returns>A new instance of <see cref="ConnectionGenes{T}"/>.</returns>
public ConnectionGenes <double> CalculateCentroid(IList <ConnectionGenes <double> > pointList)
{
return(DistanceMetricUtils.CalculateEuclideanCentroid(pointList));
}
