parabola.py 文件源码

def logpdf(self, rowid, targets, constraints=None, inputs=None):
        assert targets.keys() == self.outputs
        assert inputs.keys() == self.inputs
        assert not constraints
        x = inputs[self.inputs[0]]
        y = targets[self.outputs[0]]
        return logsumexp([
            np.log(.5)+self.uniform.logpdf(y-x**2),
            np.log(.5)+self.uniform.logpdf(-y-x**2)
        ])