Python Uniform示例

示例#1

def test_uniform():
    U = Uniform(-3, -1)
    assert U.mean == -2
    assert U.confidence(1) == (-3, -1)
    assert U.confidence(Rational(1, 2)) == (Rational(-5, 2), Rational(-3, 2))
    assert U.pdf(-4) == 0
    assert U.pdf(-Rational(3, 2)) == Rational(1, 2)
    assert U.pdf(0) == 0
    assert U.cdf(-4) == 0
    assert U.cdf(-Rational(3, 2)) == Rational(3, 4)
    assert U.cdf(0) == 1

示例#2

文件： test_statistics.py 项目： tuhina/sympy

def test_fit():
    import random
    random.seed(1234)
    n = Normal.fit(Uniform.fit(Normal(2, 1.5).random(1000)))
    #print n.mean
    #print n.stddev
    assert abs(n.mean - 2) < 0.3
    assert abs(n.stddev - 1.5) < 0.3
    n = Normal.fit([1,2,3,4,5])
    assert n.mean == 3
    assert n.stddev == sqrt(2)
    n = Uniform.fit([1,2,3,4,5])
    assert n.mean == 3
    assert n.stddev == sqrt(2)

示例#3

文件： test_statistics.py 项目： jcockayne/sympy-rkern

def test_uniform():
    U = Uniform(-3, -1)
    assert U.mean == -2
    assert U.confidence(1) == (-3, -1)
    assert U.confidence(Rational(1,2)) == (Rational(-5,2), Rational(-3,2))
    assert U.pdf(-4) == 0
    assert U.pdf(-Rational(3,2)) == Rational(1,2)
    assert U.pdf(0) == 0
    assert U.cdf(-4) == 0
    assert U.cdf(-Rational(3,2)) == Rational(3,4)
    assert U.cdf(0) == 1

示例#4

def test_fit():
    import random
    random.seed(1234)
    n = Normal.fit(Uniform.fit(Normal(2, 1.5).random(1000)))
    #print n.mean
    #print n.stddev
    assert abs(n.mean - 2) < 0.3
    assert abs(n.stddev - 1.5) < 0.3

示例#5

文件： test_statistics.py 项目： jcockayne/sympy-rkern

def test_fit():
    import random
    random.seed(1234)
    n = Normal.fit(Uniform.fit(Normal(2, 1.5).random(1000)))
    #print n.mean
    #print n.stddev
    assert abs(n.mean - 2) < 0.3
    assert abs(n.stddev - 1.5) < 0.3

示例#6

文件： test_statistics.py 项目： tuhina/sympy

def test_uniform():
    U = Uniform(-3, -1)
    assert str(U) == "Uniform(-3, -1)"
    assert repr(U) == "Uniform(-3, -1)"
    x = U.random()
    assert x < -1 and x > -3
    assert U.mean == -2
    assert U.confidence(1) == (-3, -1)
    assert U.confidence(Rational(1,2)) == (Rational(-5,2), Rational(-3,2))
    assert U.pdf(-4) == 0
    assert U.pdf(-Rational(3,2)) == Rational(1,2)
    assert U.pdf(0) == 0
    assert U.cdf(-4) == 0
    assert U.cdf(-Rational(3,2)) == Rational(3,4)
    assert U.cdf(0) == 1