EventTrio

class poisson_approval.EventTrio(candidate_x, candidate_y, candidate_z, tau)[source]

A 3-candidate tie.

Notes

We consider the 3-way tie, i.e. situations where S_x = S_y = S_z.

For parameters and attributes, cf. Event.

Examples

>>> from fractions import Fraction
>>> from poisson_approval import TauVector
>>> tau = TauVector({'a': Fraction(1, 10), 'ab': Fraction(6, 10), 'c': Fraction(3, 10)})
>>> EventTrio(candidate_x='a', candidate_y='b', candidate_z='c', tau=tau)
<asymptotic = exp(- 0.151472 n - 0.5 log n - 0.836813 + o(1)), phi_a = 0, phi_c = 1.41421, phi_ab = 0.707107>
>>> from poisson_approval import TauVector
>>> tau = TauVector({'a': Fraction(1, 6), 'b': Fraction(1, 6), 'c': Fraction(1, 6),
...                  'ab': Fraction(1, 6), 'ac': Fraction(1, 6), 'bc': Fraction(1, 6)})
>>> EventTrio(candidate_x='a', candidate_y='b', candidate_z='c', tau=tau)
<asymptotic = exp(? log n + ? + o(1)), phi_a = 1, phi_b = 1, phi_c = 1, phi_ab = 1, phi_ac = 1, phi_bc = 1>