leezu commented on a change in pull request #18619:
URL: https://github.com/apache/incubator-mxnet/pull/18619#discussion_r453108121
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File path: python/mxnet/gluon/block.py
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@@ -1573,29 +1534,31 @@ def __init__(self, outputs, inputs, params=None):
arg_types, aux_types = _infer_param_types(syms, out, arg_params,
aux_params)
- def _set_params_attr(name, **kwargs):
- if params.get(name) is None:
- param = Parameter(**kwargs)
- param._name = name
- else:
- param = params[name]
- param._check_and_setattr(**kwargs)
- if self._structured_named:
- lis = structure[name]
- assert len(lis) > 0, "Can not find structured name for
Parameter %s in 'params'. " \
- "Please check 'params' is complete!" % name
- for structured_name in lis:
- self._reg_params[structured_name] = param
- else:
- self._reg_params[name] = param
+ if params is None:
+ params = {}
+ unused_params = set(params.keys()) - set(arg_params) - set(aux_params)
+ if len(unused_params) > 0:
+ raise ValueError('{} params are unused by the
model.'.format(unused_params))
Review comment:
There's the risk that users misuse the API by mistake and don't see the
warning (eg. CI server often doesn't error out for warnings). So IMO it's
better to enforce a high standard and ensure that users don't pass an invalid
parameter dict. If they do so by mistake and don't see the warning, they end up
with randomly initialized parameters instead of the intended values.
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