Python math.isinf() Examples
The following are 30
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Example #1
Source File: importance.py From cgpm with Apache License 2.0 | 6 votes |
def logpdf(self, rowid, targets, constraints=None, inputs=None): if constraints is None: constraints = {} if inputs is None: inputs = {} # Compute joint probability. samples_joint, weights_joint = zip(*[ self.weighted_sample( rowid, [], gu.merged(targets, constraints), inputs) for _i in xrange(self.accuracy) ]) logp_joint = gu.logmeanexp(weights_joint) # Compute marginal probability. samples_marginal, weights_marginal = zip(*[ self.weighted_sample(rowid, [], constraints, inputs) for _i in xrange(self.accuracy) ]) if constraints else ({}, [0.]) if all(isinf(l) for l in weights_marginal): raise ValueError('Zero density constraints: %s' % (constraints,)) logp_constraints = gu.logmeanexp(weights_marginal) # Return log ratio. return logp_joint - logp_constraints
Example #2
Source File: gaussian_moments.py From DOTA_models with Apache License 2.0 | 6 votes |
def _compute_delta(log_moments, eps): """Compute delta for given log_moments and eps. Args: log_moments: the log moments of privacy loss, in the form of pairs of (moment_order, log_moment) eps: the target epsilon. Returns: delta """ min_delta = 1.0 for moment_order, log_moment in log_moments: if moment_order == 0: continue if math.isinf(log_moment) or math.isnan(log_moment): sys.stderr.write("The %d-th order is inf or Nan\n" % moment_order) continue if log_moment < moment_order * eps: min_delta = min(min_delta, math.exp(log_moment - moment_order * eps)) return min_delta
Example #3
Source File: fractions.py From jawfish with MIT License | 6 votes |
def _richcmp(self, other, op): """Helper for comparison operators, for internal use only. Implement comparison between a Rational instance `self`, and either another Rational instance or a float `other`. If `other` is not a Rational instance or a float, return NotImplemented. `op` should be one of the six standard comparison operators. """ # convert other to a Rational instance where reasonable. if isinstance(other, numbers.Rational): return op(self._numerator * other.denominator, self._denominator * other.numerator) if isinstance(other, float): if math.isnan(other) or math.isinf(other): return op(0.0, other) else: return op(self, self.from_float(other)) else: return NotImplemented
Example #4
Source File: fractions.py From jawfish with MIT License | 6 votes |
def __eq__(a, b): """a == b""" if isinstance(b, numbers.Rational): return (a._numerator == b.numerator and a._denominator == b.denominator) if isinstance(b, numbers.Complex) and b.imag == 0: b = b.real if isinstance(b, float): if math.isnan(b) or math.isinf(b): # comparisons with an infinity or nan should behave in # the same way for any finite a, so treat a as zero. return 0.0 == b else: return a == a.from_float(b) else: # Since a doesn't know how to compare with b, let's give b # a chance to compare itself with a. return NotImplemented
Example #5
Source File: fractions.py From jawfish with MIT License | 6 votes |
def from_float(cls, f): """Converts a finite float to a rational number, exactly. Beware that Fraction.from_float(0.3) != Fraction(3, 10). """ if isinstance(f, numbers.Integral): return cls(f) elif not isinstance(f, float): raise TypeError("%s.from_float() only takes floats, not %r (%s)" % (cls.__name__, f, type(f).__name__)) if math.isnan(f): raise ValueError("Cannot convert %r to %s." % (f, cls.__name__)) if math.isinf(f): raise OverflowError("Cannot convert %r to %s." % (f, cls.__name__)) return cls(*f.as_integer_ratio())
Example #6
Source File: utils.py From DOTA_models with Apache License 2.0 | 6 votes |
def GenerateBinomialTable(m): """Generate binomial table. Args: m: the size of the table. Returns: A two dimensional array T where T[i][j] = (i choose j), for 0<= i, j <=m. """ table = numpy.zeros((m + 1, m + 1), dtype=numpy.float64) for i in range(m + 1): table[i, 0] = 1 for i in range(1, m + 1): for j in range(1, m + 1): v = table[i - 1, j] + table[i - 1, j -1] assert not math.isnan(v) and not math.isinf(v) table[i, j] = v return tf.convert_to_tensor(table)
Example #7
Source File: dial-gauge.py From kivy-smoothie-host with GNU General Public License v3.0 | 6 votes |
def draw_setpoint(self, *args): # draw a setpoint if self.setpoint_canvas: self.canvas.after.remove(self.setpoint_canvas) self.setpoint_canvas = None if math.isnan(self.setpoint_value) or math.isinf(self.setpoint_value): return v = self.value_to_angle(self.setpoint_value) length = self.dial_diameter / 2.0 - self.tic_length if not self.setpoint_length else self.setpoint_length self.setpoint_canvas = InstructionGroup() self.setpoint_canvas.add(PushMatrix()) self.setpoint_canvas.add(Color(*self.setpoint_color)) self.setpoint_canvas.add(Rotate(angle=v, axis=(0, 0, -1), origin=self.dial_center)) self.setpoint_canvas.add(Translate(self.dial_center[0], self.dial_center[1])) self.setpoint_canvas.add(Line(points=[0, 0, 0, length], width=self.setpoint_thickness, cap='none')) # self.setpoint_canvas.add(SmoothLine(points=[0, 0, 0, length], width=self.setpoint_thickness)) self.setpoint_canvas.add(PopMatrix()) self.canvas.after.add(self.setpoint_canvas)
Example #8
Source File: interp.py From hadrian with Apache License 2.0 | 6 votes |
def __call__(self, state, scope, pos, paramTypes, x, *args): if len(args) == 3: numbins, low, high = args if low >= high or math.isnan(low) or math.isnan(high): raise PFARuntimeException("bad histogram range", self.errcodeBase + 0, self.name, pos) if numbins < 1: raise PFARuntimeException("bad histogram scale", self.errcodeBase + 1, self.name, pos) if math.isnan(x) or x < low or x >= high: raise PFARuntimeException("x out of range", self.errcodeBase + 2, self.name, pos) out = int(math.floor(numbins * div((x - low), (high - low)))) if out < 0 or out >= numbins: raise PFARuntimeException("x out of range", self.errcodeBase + 2, self.name, pos) return out else: origin, width = args if math.isnan(origin) or math.isinf(origin): raise PFARuntimeException("bad histogram range", self.errcodeBase + 0, self.name, pos) if width <= 0.0 or math.isnan(width): raise PFARuntimeException("bad histogram scale", self.errcodeBase + 1, self.name, pos) if math.isnan(x) or math.isinf(x): raise PFARuntimeException("x out of range", self.errcodeBase + 2, self.name, pos) else: return int(math.floor(div((x - origin), width)))
Example #9
Source File: parse.py From hadrian with Apache License 2.0 | 6 votes |
def __call__(self, state, scope, pos, paramTypes, str): try: out = float(str) except ValueError: raise PFARuntimeException("not a single-precision float", self.errcodeBase + 0, self.name, pos) if math.isnan(out): return out elif math.isinf(out): return out elif out > FLOAT_MAX_VALUE: return float("inf") elif -out > FLOAT_MAX_VALUE: return float("-inf") elif abs(out) < FLOAT_MIN_VALUE: return 0.0 else: return out
Example #10
Source File: pfatest.py From hadrian with Apache License 2.0 | 6 votes |
def __call__(self, state, scope, pos, paramTypes, state_): chi2 = state_["chi2"] dof = state_["dof"] if dof < 0: raise PFARuntimeException("invalid parameterization", self.errcodeBase + 0, self.name, pos) elif dof == 0: if chi2 > 0: return 1.0 else: return 0.0 elif math.isnan(chi2): return float("nan") elif math.isinf(chi2): if chi2 > 0: return 1.0 else: return 0.0 else: return float(Chi2Distribution(dof, self.errcodeBase + 0, self.name, pos).CDF(chi2))
Example #11
Source File: accountant.py From DOTA_models with Apache License 2.0 | 6 votes |
def _compute_delta(self, log_moments, eps): """Compute delta for given log_moments and eps. Args: log_moments: the log moments of privacy loss, in the form of pairs of (moment_order, log_moment) eps: the target epsilon. Returns: delta """ min_delta = 1.0 for moment_order, log_moment in log_moments: if math.isinf(log_moment) or math.isnan(log_moment): sys.stderr.write("The %d-th order is inf or Nan\n" % moment_order) continue if log_moment < moment_order * eps: min_delta = min(min_delta, math.exp(log_moment - moment_order * eps)) return min_delta
Example #12
Source File: la.py From hadrian with Apache License 2.0 | 6 votes |
def __call__(self, state, scope, pos, paramTypes, x): if isinstance(x, (list, tuple)) and all(isinstance(xi, (list, tuple)) for xi in x): rows = len(x) if rows < 1: raise PFARuntimeException("too few rows/cols", self.errcodeBase + 0, self.name, pos) cols = len(x[0]) if cols < 1: raise PFARuntimeException("too few rows/cols", self.errcodeBase + 0, self.name, pos) if raggedArray(x): raise PFARuntimeException("ragged columns", self.errcodeBase + 1, self.name, pos) if rows != cols: raise PFARuntimeException("non-square matrix", self.errcodeBase + 2, self.name, pos) if any(any(math.isnan(z) or math.isinf(z) for z in row) for row in x): raise PFARuntimeException("non-finite matrix", self.errcodeBase + 3, self.name, pos) return matrixToArrays(self.calculate(arraysToMatrix(x), rows)) elif isinstance(x, dict) and all(isinstance(x[i], dict) for i in x.keys()): keys = list(rowKeys(x).union(colKeys(x))) if len(keys) < 1 or all(len(z) == 0 for z in x.values()): raise PFARuntimeException("too few rows/cols", self.errcodeBase + 0, self.name, pos) if any(any(math.isnan(z) or math.isinf(z) for z in row.values()) for row in x.values()): raise PFARuntimeException("non-finite matrix", self.errcodeBase + 3, self.name, pos) return matrixToMaps(self.calculate(mapsToMatrix(x, keys, keys), len(keys)), map(str, xrange(len(keys))), keys)
Example #13
Source File: dist.py From hadrian with Apache License 2.0 | 6 votes |
def __call__(self, state, scope, pos, paramTypes, x, size, prob): if math.isinf(prob) or math.isnan(prob) or size <= 0 or prob < 0 or prob > 1: raise PFARuntimeException("invalid parameterization", self.errcodeBase + 0, self.name, pos) elif math.isinf(x) or math.isnan(x): raise PFARuntimeException("invalid input", self.errcodeBase + 1, self.name, pos) elif x < 0: return 0.0 elif x >= size: return 1.0 elif prob == 1: if x < size: return 0.0 else: return 1.0 elif prob == 0: return 1.0 else: return BinomialDistribution(size, prob, self.errcodeBase + 0, self.name, pos).CDF(x)
Example #14
Source File: dist.py From hadrian with Apache License 2.0 | 6 votes |
def __call__(self, state, scope, pos, paramTypes, x, shape, scale): if math.isinf(shape) or math.isnan(shape) or math.isinf(scale) or math.isnan(scale) or shape < 0 or scale < 0: raise PFARuntimeException("invalid parameterization", self.errcodeBase + 0, self.name, pos) elif math.isinf(x) or math.isnan(x): raise PFARuntimeException("invalid input", self.errcodeBase + 1, self.name, pos) elif shape == 0 or scale == 0: if x != 0: return 0.0 else: return float("inf") elif x < 0: return 0.0 elif x == 0: if shape < 1: return float("inf") elif shape == 1: return 1.0/scale else: return 0.0 else: return GammaDistribution(shape, scale, self.errcodeBase + 0, self.name, pos).PDF(x)
Example #15
Source File: dist.py From hadrian with Apache License 2.0 | 6 votes |
def __call__(self, state, scope, pos, paramTypes, p, *others): if len(others) == 2: mu, sigma = others else: mu = others[0]["mean"] if math.isnan(others[0]["variance"]) or others[0]["variance"] < 0.0: raise PFARuntimeException("invalid parameterization", self.errcodeBase + 0, self.name, pos) else: sigma = math.sqrt(others[0]["variance"]) if math.isinf(mu) or math.isnan(mu) or math.isinf(sigma) or math.isnan(sigma) or sigma < 0.0: raise PFARuntimeException("invalid parameterization", self.errcodeBase + 0, self.name, pos) elif not (0.0 <= p <= 1.0): raise PFARuntimeException("invalid input", self.errcodeBase + 1, self.name, pos) elif p == 1.0: return float("inf") elif p == 0.0: return float("-inf") elif sigma == 0.0: return mu else: return GaussianDistribution(mu, sigma, self.errcodeBase + 0, self.name, pos).QF(p)
Example #16
Source File: dist.py From hadrian with Apache License 2.0 | 6 votes |
def __call__(self, state, scope, pos, paramTypes, x, *others): if len(others) == 2: mu, sigma = others else: mu = others[0]["mean"] if math.isnan(others[0]["variance"]) or others[0]["variance"] < 0.0: raise PFARuntimeException("invalid parameterization", self.errcodeBase + 0, self.name, pos) else: sigma = math.sqrt(others[0]["variance"]) if math.isinf(mu) or math.isnan(mu) or math.isinf(sigma) or math.isnan(sigma) or sigma < 0.0: raise PFARuntimeException("invalid parameterization", self.errcodeBase + 0, self.name, pos) elif math.isinf(x) or math.isnan(x): raise PFARuntimeException("invalid input", self.errcodeBase + 1, self.name, pos) elif sigma == 0.0: if x < mu: return 0.0 else: return 1.0 else: return GaussianDistribution(mu, sigma, self.errcodeBase + 0, self.name, pos).CDF(x)
Example #17
Source File: dist.py From hadrian with Apache License 2.0 | 6 votes |
def __call__(self, state, scope, pos, paramTypes, x, *others): if len(others) == 2: mu, sigma = others else: mu = others[0]["mean"] if math.isnan(others[0]["variance"]) or others[0]["variance"] < 0.0: raise PFARuntimeException("invalid parameterization", self.errcodeBase + 0, self.name, pos) else: sigma = math.sqrt(others[0]["variance"]) if math.isinf(mu) or math.isnan(mu) or math.isinf(sigma) or math.isnan(sigma) or sigma < 0.0: raise PFARuntimeException("invalid parameterization", self.errcodeBase + 0, self.name, pos) elif math.isinf(x) or math.isnan(x): raise PFARuntimeException("invalid input", self.errcodeBase + 1, self.name, pos) elif sigma == 0.0: if x != mu: return float("-inf") else: return float("inf") else: return GaussianDistribution(mu, sigma, self.errcodeBase + 0, self.name, pos).LL(x)
Example #18
Source File: parse.py From hadrian with Apache License 2.0 | 6 votes |
def __call__(self, state, scope, pos, paramTypes, str): try: out = float(str) except ValueError: raise PFARuntimeException("not a double-precision float", self.errcodeBase + 0, self.name, pos) if math.isnan(out): return out elif math.isinf(out): return out elif out > DOUBLE_MAX_VALUE: return float("inf") elif -out > DOUBLE_MAX_VALUE: return float("-inf") elif abs(out) < DOUBLE_MIN_VALUE: return 0.0 else: return out
Example #19
Source File: dist.py From hadrian with Apache License 2.0 | 5 votes |
def __call__(self, state, scope, pos, paramTypes, x, m, n, k): if m + n < k or m < 0 or n <= 0 or m + n == 0 or k < 0: raise PFARuntimeException("invalid parameterization", self.errcodeBase + 0, self.name, pos) elif math.isinf(x) or math.isnan(x): raise PFARuntimeException("invalid input", self.errcodeBase + 1, self.name, pos) elif x > m: return 0.0 else: return HypergeometricDistribution(m, n, k, self.errcodeBase + 0, self.name, pos).CDF(x)
Example #20
Source File: dist.py From hadrian with Apache License 2.0 | 5 votes |
def __call__(self, state, scope, pos, paramTypes, x, min, max): if math.isinf(min) or math.isnan(min) or math.isinf(max) or math.isnan(max) or min >= max: raise PFARuntimeException("invalid parameterization", self.errcodeBase + 0, self.name, pos) elif math.isinf(x) or math.isnan(x): raise PFARuntimeException("invalid input", self.errcodeBase + 1, self.name, pos) return UniformDistribution(min, max, self.errcodeBase + 0, self.name, pos).CDF(x)
Example #21
Source File: dist.py From hadrian with Apache License 2.0 | 5 votes |
def __call__(self, state, scope, pos, paramTypes, x, m, n, k): if m + n < k or m < 0 or n <= 0 or m + n == 0 or k < 0: raise PFARuntimeException("invalid parameterization", self.errcodeBase + 0, self.name, pos) elif math.isinf(x) or math.isnan(x): raise PFARuntimeException("invalid input", self.errcodeBase + 1, self.name, pos) elif x > m: return 0.0 else: return HypergeometricDistribution(m, n, k, self.errcodeBase + 0, self.name, pos).PDF(x)
Example #22
Source File: dist.py From hadrian with Apache License 2.0 | 5 votes |
def __call__(self, state, scope, pos, paramTypes, p, prob): if math.isinf(prob) or math.isnan(prob) or prob <= 0 or prob > 1: raise PFARuntimeException("invalid parameterization", self.errcodeBase + 0, self.name, pos) elif not (0.0 <= p <= 1): raise PFARuntimeException("invalid input", self.errcodeBase + 1, self.name, pos) elif p == 1: return float("inf") else: return GeometricDistribution(prob, self.errcodeBase + 0, self.name, pos).QF(p)
Example #23
Source File: dist.py From hadrian with Apache License 2.0 | 5 votes |
def __call__(self, state, scope, pos, paramTypes, x, prob): if math.isinf(prob) or math.isnan(prob) or prob <= 0 or prob > 1: raise PFARuntimeException("invalid parameterization", self.errcodeBase + 0, self.name, pos) elif math.isinf(x) or math.isnan(x): raise PFARuntimeException("invalid input", self.errcodeBase + 1, self.name, pos) else: return GeometricDistribution(prob, self.errcodeBase + 0, self.name, pos).CDF(x)
Example #24
Source File: dist.py From hadrian with Apache License 2.0 | 5 votes |
def __call__(self, state, scope, pos, paramTypes, p, min, max): if math.isinf(min) or math.isnan(min) or math.isinf(max) or math.isnan(max) or min >= max: raise PFARuntimeException("invalid parameterization", self.errcodeBase + 0, self.name, pos) elif not (0.0 <= p <= 1.0): raise PFARuntimeException("invalid input", self.errcodeBase + 1, self.name, pos) else: return UniformDistribution(min, max, self.errcodeBase + 0, self.name, pos).QF(p)
Example #25
Source File: dist.py From hadrian with Apache License 2.0 | 5 votes |
def __call__(self, state, scope, pos, paramTypes, x, df): if df <= 0: raise PFARuntimeException("invalid parameterization", self.errcodeBase + 0, self.name, pos) elif math.isinf(x) or math.isnan(x): raise PFARuntimeException("invalid input", self.errcodeBase + 1, self.name, pos) else: return TDistribution(df, self.errcodeBase + 0, self.name, pos).CDF(x)
Example #26
Source File: dist.py From hadrian with Apache License 2.0 | 5 votes |
def __call__(self, state, scope, pos, paramTypes, p, location, scale): if math.isinf(location) or math.isnan(location) or math.isinf(scale) or math.isnan(scale) or scale <= 0: raise PFARuntimeException("invalid parameterization", self.errcodeBase + 0, self.name, pos) elif not (0.0 <= p <= 1.0): raise PFARuntimeException("invalid input", self.errcodeBase + 1, self.name, pos) elif p == 1: return float("inf") elif p == 0: return float("-inf") else: return CauchyDistribution(location, scale, self.errcodeBase + 0, self.name, pos).QF(p)
Example #27
Source File: dist.py From hadrian with Apache License 2.0 | 5 votes |
def __call__(self, state, scope, pos, paramTypes, x, meanlog, sdlog): if math.isinf(meanlog) or math.isnan(meanlog) or math.isinf(sdlog) or math.isnan(sdlog) or sdlog <= 0: raise PFARuntimeException("invalid parameterization", self.errcodeBase + 0, self.name, pos) elif math.isinf(x) or math.isnan(x): raise PFARuntimeException("invalid input", self.errcodeBase + 1, self.name, pos) else: return LognormalDistribution(meanlog, sdlog, self.errcodeBase + 0, self.name, pos).CDF(x)
Example #28
Source File: dist.py From hadrian with Apache License 2.0 | 5 votes |
def __call__(self, state, scope, pos, paramTypes, p, meanlog, sdlog): if math.isinf(meanlog) or math.isnan(meanlog) or math.isinf(sdlog) or math.isnan(sdlog) or sdlog <= 0: raise PFARuntimeException("invalid parameterization", self.errcodeBase + 0, self.name, pos) elif not (0.0 <= p <= 1.0): raise PFARuntimeException("invalid input", self.errcodeBase + 1, self.name, pos) elif p == 1: return float("inf") else: return LognormalDistribution(meanlog, sdlog, self.errcodeBase + 0, self.name, pos).QF(p)
Example #29
Source File: dist.py From hadrian with Apache License 2.0 | 5 votes |
def __call__(self, state, scope, pos, paramTypes, x, df): if df <= 0: raise PFARuntimeException("invalid parameterization", self.errcodeBase + 0, self.name, pos) elif math.isinf(x) or math.isnan(x): raise PFARuntimeException("invalid input", self.errcodeBase + 1, self.name, pos) else: return TDistribution(df, self.errcodeBase + 0, self.name, pos).PDF(x)
Example #30
Source File: dist.py From hadrian with Apache License 2.0 | 5 votes |
def __call__(self, state, scope, pos, paramTypes, p, size, prob): if math.isinf(prob) or math.isnan(prob) or size <= 0 or prob < 0 or prob > 1: raise PFARuntimeException("invalid parameterization", self.errcodeBase + 0, self.name, pos) elif not (0.0 <= p <= 1): raise PFARuntimeException("invalid input", self.errcodeBase + 1, self.name, pos) elif p == 1: return float(size) elif p == 0: return 0.0 else: return BinomialDistribution(size, prob, self.errcodeBase + 0, self.name, pos).QF(p)