rok commented on code in PR #37166:
URL: https://github.com/apache/arrow/pull/37166#discussion_r1305701838
##########
docs/source/format/CanonicalExtensions.rst:
##########
@@ -148,6 +148,60 @@ Fixed shape tensor
by this specification. Instead, this extension type lets one use fixed shape
tensors
as elements in a field of a RecordBatch or a Table.
+.. _variable_shape_tensor_extension:
+
+Variable shape tensor
+=====================
+
+* Extension name: `arrow.variable_shape_tensor`.
+
+* The storage type of the extension is: ``StructArray`` where struct
+ is composed of **data** and **shape** fields describing a single
+ tensor per row:
+
+ * **data** is a ``List`` holding tensor elements of a single tensor.
+ Data type of the list elements is uniform across the entire column
+ and also provided in metadata.
+ * **shape** is a ``FixedSizeList`` of the tensor shape where
+ the size of the list is equal to the number of dimensions of the
+ tensor.
Review Comment:
Indeed! Changed to:
```rst
* **shape** is a ``FixedSizeList<uint32>[ndim]`` of the tensor shape where
the size of the list ``ndim`` is equal to the number of dimensions of the
tensor.
```
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