fix: target shape of dummy (#10)

target shape of dummy should be (len,) not (len, 1)

rul_datasets/reader/dummy.py

@@ -131,14 +131,14 @@ def _generate_targets(self, rng):
         t = np.clip(np.arange(length, 1, -1), a_min=0, a_max=self.max_rul)
         t = t.astype(np.float)
 
-        return t[:, None]
+        return t
 
     def _generate_features(self, rng, targets):
         steady = -0.05 * targets + self._OFFSET[self.fd] + rng.normal() * 0.01
         noise = rng.normal(size=targets.shape) * self._NOISE_FACTOR[self.fd]
         f = np.exp(steady) + noise
 
-        return f
+        return f[:, None]
 
     def _truncate_test_split(self, rng, features, targets):
         """Extract a single window from a random position of the time series."""

tests/reader/test_dummy.py

@@ -22,6 +22,7 @@ def _assert_run_correct(run, run_target, win):
     assert win == run.shape[1]
     assert 1 == run.shape[2]
     assert len(run) == len(run_target)
+    assert run_target.shape == (len(run_target),)
     assert np.float == run.dtype
     assert np.float == run_target.dtype