parabola.py 文件源码

def simulate(self, rowid, targets, constraints=None, inputs=None, N=None):
        assert targets == self.outputs
        assert inputs.keys() == self.inputs
        assert not constraints
        x = inputs[self.inputs[0]]
        u = self.rng.rand()
        noise = self.rng.uniform(low=-self.noise, high=self.noise)
        if u < .5:
            y = x**2 + noise
        else:
            y = -(x**2 + noise)
        return {self.outputs[0]: y}