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4 changes: 2 additions & 2 deletions pytensor/xtensor/reduction.py
Original file line number Diff line number Diff line change
Expand Up @@ -81,7 +81,7 @@ def bool_reduce(x, dim: REDUCE_DIM = None, *, binary_op):
def _infer_reduced_size(original_var, reduced_var):
reduced_dims = reduced_var.dims
return variadic_mul(
*[size for dim, size in original_var.sizes if dim not in reduced_dims]
*[size for dim, size in original_var.sizes.items() if dim not in reduced_dims]
)


Expand All @@ -96,7 +96,7 @@ def var(x, dim: REDUCE_DIM, *, ddof: int = 0):
x = as_xtensor(x)
x_mean = mean(x, dim)
n = _infer_reduced_size(x, x_mean)
return square(x - x_mean) / (n - ddof)
return square(x - x_mean).sum(dim) / (n - ddof)


def std(x, dim: REDUCE_DIM, *, ddof: int = 0):
Expand Down
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