Fix dimensions for 0D scalars

index.bs

@@ -996,7 +996,6 @@ The {{MLOperand}} objects are created by the methods of {{MLGraphBuilder}}, inte
     To <dfn>check dimensions</dfn> given |dimensions| and |type|, run the following steps:
   </summary>
   <div class=algorithm-steps>
-    1. If the [=list/size=] of |dimensions| is 0, return false.
     1. If the [=list/size=] of |dimensions| is too large to be supported by the implementation, return false.
     1. If any element of |dimensions| is not a positive number, or it is too large to be supported by the implementation given |type|, return false.
     1. Return true.
@@ -1611,7 +1610,7 @@ Create a named {{MLOperand}} based on a descriptor, that can be used as an input
     </div>
     1. If |name| is empty, then [=exception/throw=] a {{TypeError}}.
     1. [=Assert=]: the type of |descriptor| is {{MLOperandDescriptor}}.
-    1. [=Assert=]: If |descriptor|.{{MLOperandDescriptor/dimensions}} does not [=map/exist=], then |descriptor| defines a scalar input.
+    1. [=Assert=]: If |descriptor|.{{MLOperandDescriptor/dimensions}} does not [=map/exist=], then |descriptor| defines a scalar input, equivalent to zero dimensions.
     1. If |descriptor|.{{MLOperandDescriptor/dimensions}} [=map/exists=]:
         1. If the [=check dimensions=] steps given |descriptor|.{{MLOperandDescriptor/dataType}} and |descriptor|.{{MLOperandDescriptor/dimensions}} return false, then [=exception/throw=] a "{{DataError}}" {{DOMException}}.
         1. If the [=byte length=] of |descriptor| is not supported by the underlying platform, then [=exception/throw=] a "{{DataError}}" {{DOMException}}.
@@ -4863,9 +4862,9 @@ partial interface MLGraphBuilder {
   <div class=algorithm-steps>
     1. [=Assert=]: the type of |input| is {{MLOperand}}.
     1. Let |outputShape| be an empty array of {{unsigned long}}.
-    1. If |newShape| is a scalar [=number=], set |outputShape| to `«  1  »`.
+    1. If |newShape| is a scalar [=number=], set |outputShape| to `«»`.
     1. Otherwise, if |newShape| is an array of {{unsigned long}}:
-        1. If the [=list/size=] of |newShape| is 0, set |outputShape| to `«  1  »` (reshaping to scalar).
+        1. If the [=list/size=] of |newShape| is 0, set |outputShape| to `«»` (reshaping to scalar).
         1. If |newShape| contains more than one `null` value, then [=exception/throw=] a "{{DataError}}" {{DOMException}}.
         1. If any value in |newShape| is 0, then [=exception/throw=] a "{{DataError}}" {{DOMException}}.
         1. Let |inputElementCount| be the product of all elements in |input|.{{MLOperand/[[descriptor]]}}.{{MLOperandDescriptor/dimensions}}.