public void AveragePrecisionRankingMetric_Error_Top_5()
{
var targets = Enumerable.Range(1, 5).ToArray();
var predictions = new int[] { 1, 1, 1, 1, 1 };
var sut = new AveragePrecisionRankingMetric <int>(5);
var actual = sut.Error(targets, predictions);
Assert.AreEqual(1.0 - 0.2, actual, 0.0001);
}
public void AveragePrecisionRankingMetric_Error_Top_3_3()
{
var targets = new int[] { 1, 3 };
var predictions = new int[] { 1, 2, 3, 4, 5 };
var sut = new AveragePrecisionRankingMetric <int>(3);
var actual = sut.Error(targets, predictions);
Assert.AreEqual(1.0 - 5.0 / 6.0, actual, 0.0001);
}
public void AveragePrecisionRankingMetric_Error_Top_20()
{
var targets = Enumerable.Range(1, 100).ToArray();
var first = Enumerable.Range(1, 20).ToList();
first.AddRange(Enumerable.Range(200, 600));
var predictions = first.ToArray();
var sut = new AveragePrecisionRankingMetric <int>(20);
var actual = sut.Error(targets, predictions);
Assert.AreEqual(1.0 - 1.0, actual, 0.0001);
}
