Add third python version

.github/workflows/test.yml

@@ -15,7 +15,7 @@ jobs:
     timeout-minutes: 20
     strategy:
       matrix:
-        python-version: ['3.11', '3.12']
+        python-version: ['3.10', '3.11', '3.12']
         os: [ubuntu-latest, windows-latest, macos-latest]
 
     steps:

torchhd/memory.py

@@ -121,21 +121,20 @@ def read(self, query: Tensor) -> VSATensor:
 
         """
         # first dims from query, last dim from value
-        out_shape = (*query.shape[:-1], self.value_dim)
+        out_shape = tuple(query.shape[:-1]) + (self.value_dim,)
 
         if query.dim() == 1:
             query = query.unsqueeze(0)
 
-        # make sure to have at least two dimension for index_add_
-        intermediate_shape = (*query.shape[:-1], self.value_dim)
+        intermediate_shape = tuple(query.shape[:-1]) + (self.value_dim,)
 
         similarity = query @ self.keys.T
         is_active = similarity >= self.threshold
 
         # sparse matrix-vector multiplication
         r_indices, v_indices = is_active.nonzero().T
         read = query.new_zeros(intermediate_shape)
-        read.index_add_(0, r_indices, self.values[v_indices])
+        read = read.index_add(0, r_indices, self.values[v_indices])
         return read.view(out_shape)
 
     @torch.no_grad()