C# (CSharp) NReco.CF.Taste.Impl.Common WeightedRunningAverageAndStdDev 예제들

예제 #1

파일: WeightedRunningAverageTest.cs 프로젝트: techmobstudios/Certified-Mixtapes-Recommender

        public void testWeightedAndStdDev()
        {
            WeightedRunningAverageAndStdDev runningAverage = new WeightedRunningAverageAndStdDev();

            Assert.AreEqual(0, runningAverage.GetCount());
            Assert.True(Double.IsNaN(runningAverage.GetAverage()));
            Assert.True(Double.IsNaN(runningAverage.GetStandardDeviation()));

            runningAverage.AddDatum(1.0);
            Assert.AreEqual(1.0, runningAverage.GetAverage(), EPSILON);
            Assert.True(Double.IsNaN(runningAverage.GetStandardDeviation()));
            runningAverage.AddDatum(1.0, 2.0);
            Assert.AreEqual(1.0, runningAverage.GetAverage(), EPSILON);
            Assert.AreEqual(0.0, runningAverage.GetStandardDeviation(), EPSILON);
            runningAverage.AddDatum(8.0, 0.5);
            Assert.AreEqual(2.0, runningAverage.GetAverage(), EPSILON);
            Assert.AreEqual(Math.Sqrt(10.5), runningAverage.GetStandardDeviation(), EPSILON);
            runningAverage.AddDatum(-4.0);
            Assert.AreEqual(2.0/3.0, runningAverage.GetAverage(), EPSILON);
            Assert.AreEqual(Math.Sqrt(15.75), runningAverage.GetStandardDeviation(), EPSILON);

            runningAverage.RemoveDatum(-4.0);
            Assert.AreEqual(2.0, runningAverage.GetAverage(), EPSILON);
            Assert.AreEqual(Math.Sqrt(10.5), runningAverage.GetStandardDeviation(), EPSILON);
            runningAverage.RemoveDatum(2.0, 2.0);
            Assert.AreEqual(2.0, runningAverage.GetAverage(), EPSILON);
            Assert.AreEqual(Math.Sqrt(31.5), runningAverage.GetStandardDeviation(), EPSILON);
        }

예제 #2

파일: WeightedRunningAverageTest.cs 프로젝트: Sandy4321/recommender-2

        public void testWeightedAndStdDev()
        {
            WeightedRunningAverageAndStdDev runningAverage = new WeightedRunningAverageAndStdDev();

            Assert.AreEqual(0, runningAverage.GetCount());
            Assert.True(Double.IsNaN(runningAverage.GetAverage()));
            Assert.True(Double.IsNaN(runningAverage.GetStandardDeviation()));

            runningAverage.AddDatum(1.0);
            Assert.AreEqual(1.0, runningAverage.GetAverage(), EPSILON);
            Assert.True(Double.IsNaN(runningAverage.GetStandardDeviation()));
            runningAverage.AddDatum(1.0, 2.0);
            Assert.AreEqual(1.0, runningAverage.GetAverage(), EPSILON);
            Assert.AreEqual(0.0, runningAverage.GetStandardDeviation(), EPSILON);
            runningAverage.AddDatum(8.0, 0.5);
            Assert.AreEqual(2.0, runningAverage.GetAverage(), EPSILON);
            Assert.AreEqual(Math.Sqrt(10.5), runningAverage.GetStandardDeviation(), EPSILON);
            runningAverage.AddDatum(-4.0);
            Assert.AreEqual(2.0 / 3.0, runningAverage.GetAverage(), EPSILON);
            Assert.AreEqual(Math.Sqrt(15.75), runningAverage.GetStandardDeviation(), EPSILON);

            runningAverage.RemoveDatum(-4.0);
            Assert.AreEqual(2.0, runningAverage.GetAverage(), EPSILON);
            Assert.AreEqual(Math.Sqrt(10.5), runningAverage.GetStandardDeviation(), EPSILON);
            runningAverage.RemoveDatum(2.0, 2.0);
            Assert.AreEqual(2.0, runningAverage.GetAverage(), EPSILON);
            Assert.AreEqual(Math.Sqrt(31.5), runningAverage.GetStandardDeviation(), EPSILON);
        }