Update tensor type in target of calculate_start_values function

lightgbmlss/distributions/distribution_utils.py

@@ -196,7 +196,7 @@ def calculate_start_values(self,
             Starting values for each distributional parameter.
         """
         # Convert target to torch.tensor
-        target = torch.tensor(target, dtype=torch.float32)
+        target = torch.tensor(target).reshape(-1, 1)
 
         # Initialize parameters
         params = [torch.tensor(0.5, requires_grad=True) for _ in range(self.n_dist_param)]