C# (CSharp) NReco.CF.Taste.Impl.Common FullRunningAverageAndStdDev.GetCount示例

示例#1

文件： RunningAverageAndStdDevTest.cs 项目： techmobstudios/Certified-Mixtapes-Recommender

        public void testStddev()
        {
            IRunningAverageAndStdDev runningAverage = new FullRunningAverageAndStdDev();

            Assert.AreEqual(0, runningAverage.GetCount());
            Assert.True(Double.IsNaN(runningAverage.GetAverage()));
            runningAverage.AddDatum(1.0);
            Assert.AreEqual(1, runningAverage.GetCount());
            Assert.AreEqual(1.0, runningAverage.GetAverage(), EPSILON);
            Assert.True(Double.IsNaN(runningAverage.GetStandardDeviation()));
            runningAverage.AddDatum(1.0);
            Assert.AreEqual(2, runningAverage.GetCount());
            Assert.AreEqual(1.0, runningAverage.GetAverage(), EPSILON);
            Assert.AreEqual(0.0, runningAverage.GetStandardDeviation(), EPSILON);

            runningAverage.AddDatum(7.0);
            Assert.AreEqual(3, runningAverage.GetCount());
            Assert.AreEqual(3.0, runningAverage.GetAverage(), EPSILON);
            Assert.AreEqual(3.464101552963257, runningAverage.GetStandardDeviation(), EPSILON);

            runningAverage.AddDatum(5.0);
            Assert.AreEqual(4, runningAverage.GetCount());
            Assert.AreEqual(3.5, runningAverage.GetAverage(), EPSILON);
            Assert.AreEqual(3.0, runningAverage.GetStandardDeviation(), EPSILON);
        }

示例#2

文件： RunningAverageAndStdDevTest.cs 项目： nreco/recommender

        public void testFull()
        {
            IRunningAverageAndStdDev average = new FullRunningAverageAndStdDev();

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

            average.AddDatum(6.0);
            Assert.AreEqual(1, average.GetCount());
            Assert.AreEqual(6.0, average.GetAverage(), EPSILON);
            Assert.True(Double.IsNaN(average.GetStandardDeviation()));

            average.AddDatum(6.0);
            Assert.AreEqual(2, average.GetCount());
            Assert.AreEqual(6.0, average.GetAverage(), EPSILON);
            Assert.AreEqual(0.0, average.GetStandardDeviation(), EPSILON);

            average.RemoveDatum(6.0);
            Assert.AreEqual(1, average.GetCount());
            Assert.AreEqual(6.0, average.GetAverage(), EPSILON);
            Assert.True(Double.IsNaN(average.GetStandardDeviation()));

            average.AddDatum(-4.0);
            Assert.AreEqual(2, average.GetCount());
            Assert.AreEqual(1.0, average.GetAverage(), EPSILON);
            Assert.AreEqual(5.0 * 1.4142135623730951, average.GetStandardDeviation(), EPSILON);

            average.RemoveDatum(4.0);
            Assert.AreEqual(1, average.GetCount());
            Assert.AreEqual(-2.0, average.GetAverage(), EPSILON);
            Assert.True(Double.IsNaN(average.GetStandardDeviation()));
        }

示例#3

文件： RunningAverageAndStdDevTest.cs 项目： techmobstudios/Certified-Mixtapes-Recommender

        public void testFull()
        {
            IRunningAverageAndStdDev average = new FullRunningAverageAndStdDev();

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

            average.AddDatum(6.0);
            Assert.AreEqual(1, average.GetCount());
            Assert.AreEqual(6.0, average.GetAverage(), EPSILON);
            Assert.True(Double.IsNaN(average.GetStandardDeviation()));

            average.AddDatum(6.0);
            Assert.AreEqual(2, average.GetCount());
            Assert.AreEqual(6.0, average.GetAverage(), EPSILON);
            Assert.AreEqual(0.0, average.GetStandardDeviation(), EPSILON);

            average.RemoveDatum(6.0);
            Assert.AreEqual(1, average.GetCount());
            Assert.AreEqual(6.0, average.GetAverage(), EPSILON);
            Assert.True(Double.IsNaN(average.GetStandardDeviation()));

            average.AddDatum(-4.0);
            Assert.AreEqual(2, average.GetCount());
            Assert.AreEqual(1.0, average.GetAverage(), EPSILON);
            Assert.AreEqual(5.0 * 1.4142135623730951, average.GetStandardDeviation(), EPSILON);

            average.RemoveDatum(4.0);
            Assert.AreEqual(1, average.GetCount());
            Assert.AreEqual(-2.0, average.GetAverage(), EPSILON);
            Assert.True(Double.IsNaN(average.GetStandardDeviation()));
        }

示例#4

文件： RunningAverageAndStdDevTest.cs 项目： nreco/recommender

        public void testStddev()
        {
            IRunningAverageAndStdDev runningAverage = new FullRunningAverageAndStdDev();

            Assert.AreEqual(0, runningAverage.GetCount());
            Assert.True(Double.IsNaN(runningAverage.GetAverage()));
            runningAverage.AddDatum(1.0);
            Assert.AreEqual(1, runningAverage.GetCount());
            Assert.AreEqual(1.0, runningAverage.GetAverage(), EPSILON);
            Assert.True(Double.IsNaN(runningAverage.GetStandardDeviation()));
            runningAverage.AddDatum(1.0);
            Assert.AreEqual(2, runningAverage.GetCount());
            Assert.AreEqual(1.0, runningAverage.GetAverage(), EPSILON);
            Assert.AreEqual(0.0, runningAverage.GetStandardDeviation(), EPSILON);

            runningAverage.AddDatum(7.0);
            Assert.AreEqual(3, runningAverage.GetCount());
            Assert.AreEqual(3.0, runningAverage.GetAverage(), EPSILON);
            Assert.AreEqual(3.464101552963257, runningAverage.GetStandardDeviation(), EPSILON);

            runningAverage.AddDatum(5.0);
            Assert.AreEqual(4, runningAverage.GetCount());
            Assert.AreEqual(3.5, runningAverage.GetAverage(), EPSILON);
            Assert.AreEqual(3.0, runningAverage.GetStandardDeviation(), EPSILON);
        }