diff options
Diffstat (limited to 'beliefs/factors/bernoulli_or_cpd.py')
| -rw-r--r-- | beliefs/factors/bernoulli_or_cpd.py | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/beliefs/factors/bernoulli_or_cpd.py b/beliefs/factors/bernoulli_or_cpd.py index bfb3a95..12ee2f6 100644 --- a/beliefs/factors/bernoulli_or_cpd.py +++ b/beliefs/factors/bernoulli_or_cpd.py @@ -21,11 +21,11 @@ class BernoulliOrCPD(TabularCPD): parents=parents, parents_card=[2]*len(parents), values=[]) - self._values = [] + self._values = None @property def values(self): - if not any(self._values): + if self._values is None: self._values = self._build_kwise_values_array(len(self.variables)) self._values = self._values.reshape(self.cardinality) return self._values @@ -37,6 +37,9 @@ class BernoulliOrCPD(TabularCPD): if k == 1: return np.array([0.5, 0.5]) + # values are stored as a row vector using an ordering such that + # the right-most variables as defined in [variable].extend(parents) + # cycle through their values the fastest. return np.array( [1.,] + [0.]*(2**(k-1)-1) + [0.,] + [1.]*(2**(k-1)-1) ) |