sever.saveで保存した変数データを読み込めません
2か月ほど前からプログラミングを始めたTetsuoというものです．
OSがWindows10かつColaboratory+Python3のノートブックによる環境下でTnesorflowを用いたMINISTのデータを学習を行っています．
※1 参考サイト
「TensorFlowのMNISTチュートリアルを画像入力に対応させた」
https://qiita.com/JUN_NETWORKS/items/6514e017e89b9adbfb8d
※1のサイトを参考にさせていただき，Tensorflowによる学習を行いましたが，学習済みの変数を読み込もうとしてもエラーが出て読み込めません．
私が行った手順は以下の通りです．
(1) ※1サイトのtrain_mnist.pyをコピペして数字画像の学習をする．
(2) 最終行で
saver.save(sess, ".\ckpt\model.ckpt")
と記入し，学習済みの変数を保存する
(3)※1サイトのinput_num.pyをコピペして学習済みの変数を読み込む
すると
---------------------------------------------------------------------------
ValueError Traceback (most recent call last)
<ipython-input-43-03731490e451> in <module>()
20 sess.run(tf.global_variables_initializer())
21 ckpt = tf.train.get_checkpoint_state('./ckpt')
---> 22 saver.restore(sess, '.\ckpt\model.ckpt') # 変数データの読み込み
23
24 pred = np.argmax(logits.eval(feed_dict={x_image: [ximage], keep_prob: 1.0})[0])
/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/training/saver.py in restore(self, sess, save_path)
1280 if not checkpoint_management.checkpoint_exists_internal(checkpoint_prefix):
1281 raise ValueError("The passed save_path is not a valid checkpoint: " +
-> 1282 checkpoint_prefix)
1283
1284 logging.info("Restoring parameters from %s", checkpoint_prefix)
ValueError: The passed save_path is not a valid checkpoint: .\ckpt\model.ckpt
とエラーが出て変数を読み込めません．
パスの表記方が間違っているのかと考え，saver.saveおよびsaver.restoreのパスを
saver.save(sess, "model.ckpt")
saver.restore(sess, "model.ckpt")
にそれぞれ変更しましたが，この場合は以下のようなエラーが出てしまいやはり成功しません．
---------------------------------------------------------------------------
NotFoundError Traceback (most recent call last)
/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/client/session.py in _do_call(self, fn, *args)
1364 try:
-> 1365 return fn(*args)
1366 except errors.OpError as e:
11 frames
/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/client/session.py in _run_fn(feed_dict, fetch_list, target_list, options, run_metadata)
1349 return self._call_tf_sessionrun(options, feed_dict, fetch_list,
-> 1350 target_list, run_metadata)
1351
/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/client/session.py in _call_tf_sessionrun(self, options, feed_dict, fetch_list, target_list, run_metadata)
1442 fetch_list, target_list,
-> 1443 run_metadata)
1444
NotFoundError: 2 root error(s) found.
(0) Not found: Key conv1_1/Variable not found in checkpoint
[[{{node save_5/RestoreV2}}]]
[[save_5/RestoreV2/_9]]
(1) Not found: Key conv1_1/Variable not found in checkpoint
[[{{node save_5/RestoreV2}}]]
0 successful operations.
0 derived errors ignored.
During handling of the above exception, another exception occurred:
NotFoundError Traceback (most recent call last)
/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/training/saver.py in restore(self, sess, save_path)
1289 sess.run(self.saver_def.restore_op_name,
-> 1290 {self.saver_def.filename_tensor_name: save_path})
1291 except errors.NotFoundError as err:
/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/client/session.py in run(self, fetches, feed_dict, options, run_metadata)
955 result = self._run(None, fetches, feed_dict, options_ptr,
--> 956 run_metadata_ptr)
957 if run_metadata:
/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/client/session.py in _run(self, handle, fetches, feed_dict, options, run_metadata)
1179 results = self._do_run(handle, final_targets, final_fetches,
-> 1180 feed_dict_tensor, options, run_metadata)
1181 else:
/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/client/session.py in _do_run(self, handle, target_list, fetch_list, feed_dict, options, run_metadata)
1358 return self._do_call(_run_fn, feeds, fetches, targets, options,
-> 1359 run_metadata)
1360 else:
/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/client/session.py in _do_call(self, fn, *args)
1383 'disable_meta_optimizer = True')
-> 1384 raise type(e)(node_def, op, message)
1385
NotFoundError: 2 root error(s) found.
(0) Not found: Key conv1_1/Variable not found in checkpoint
[[node save_5/RestoreV2 (defined at /usr/local/lib/python3.6/dist-packages/tensorflow_core/python/framework/ops.py:1748) ]]
[[save_5/RestoreV2/_9]]
(1) Not found: Key conv1_1/Variable not found in checkpoint
[[node save_5/RestoreV2 (defined at /usr/local/lib/python3.6/dist-packages/tensorflow_core/python/framework/ops.py:1748) ]]
0 successful operations.
0 derived errors ignored.
Original stack trace for 'save_5/RestoreV2':
File "/usr/lib/python3.6/runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "/usr/lib/python3.6/runpy.py", line 85, in _run_code
exec(code, run_globals)
File "/usr/local/lib/python3.6/dist-packages/ipykernel_launcher.py", line 16, in <module>
app.launch_new_instance()
File "/usr/local/lib/python3.6/dist-packages/traitlets/config/application.py", line 664, in launch_instance
app.start()
File "/usr/local/lib/python3.6/dist-packages/ipykernel/kernelapp.py", line 477, in start
ioloop.IOLoop.instance().start()
File "/usr/local/lib/python3.6/dist-packages/tornado/ioloop.py", line 888, in start
handler_func(fd_obj, events)
File "/usr/local/lib/python3.6/dist-packages/tornado/stack_context.py", line 277, in null_wrapper
return fn(*args, **kwargs)
File "/usr/local/lib/python3.6/dist-packages/zmq/eventloop/zmqstream.py", line 450, in _handle_events
self._handle_recv()
File "/usr/local/lib/python3.6/dist-packages/zmq/eventloop/zmqstream.py", line 480, in _handle_recv
self._run_callback(callback, msg)
File "/usr/local/lib/python3.6/dist-packages/zmq/eventloop/zmqstream.py", line 432, in _run_callback
callback(*args, **kwargs)
File "/usr/local/lib/python3.6/dist-packages/tornado/stack_context.py", line 277, in null_wrapper
return fn(*args, **kwargs)
File "/usr/local/lib/python3.6/dist-packages/ipykernel/kernelbase.py", line 283, in dispatcher
return self.dispatch_shell(stream, msg)
File "/usr/local/lib/python3.6/dist-packages/ipykernel/kernelbase.py", line 235, in dispatch_shell
handler(stream, idents, msg)
File "/usr/local/lib/python3.6/dist-packages/ipykernel/kernelbase.py", line 399, in execute_request
user_expressions, allow_stdin)
File "/usr/local/lib/python3.6/dist-packages/ipykernel/ipkernel.py", line 196, in do_execute
res = shell.run_cell(code, store_history=store_history, silent=silent)
File "/usr/local/lib/python3.6/dist-packages/ipykernel/zmqshell.py", line 533, in run_cell
return super(ZMQInteractiveShell, self).run_cell(*args, **kwargs)
File "/usr/local/lib/python3.6/dist-packages/IPython/core/interactiveshell.py", line 2718, in run_cell
interactivity=interactivity, compiler=compiler, result=result)
File "/usr/local/lib/python3.6/dist-packages/IPython/core/interactiveshell.py", line 2822, in run_ast_nodes
if self.run_code(code, result):
File "/usr/local/lib/python3.6/dist-packages/IPython/core/interactiveshell.py", line 2882, in run_code
exec(code_obj, self.user_global_ns, self.user_ns)
File "<ipython-input-60-25ee93a2e95a>", line 19, in <module>
saver = tf.train.Saver()
File "/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/training/saver.py", line 828, in __init__
self.build()
File "/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/training/saver.py", line 840, in build
self._build(self._filename, build_save=True, build_restore=True)
File "/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/training/saver.py", line 878, in _build
build_restore=build_restore)
File "/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/training/saver.py", line 508, in _build_internal
restore_sequentially, reshape)
File "/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/training/saver.py", line 328, in _AddRestoreOps
restore_sequentially)
File "/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/training/saver.py", line 575, in bulk_restore
return io_ops.restore_v2(filename_tensor, names, slices, dtypes)
File "/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/ops/gen_io_ops.py", line 1696, in restore_v2
name=name)
File "/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/framework/op_def_library.py", line 794, in _apply_op_helper
op_def=op_def)
File "/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/util/deprecation.py", line 507, in new_func
return func(*args, **kwargs)
File "/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/framework/ops.py", line 3357, in create_op
attrs, op_def, compute_device)
File "/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/framework/ops.py", line 3426, in _create_op_internal
op_def=op_def)
File "/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/framework/ops.py", line 1748, in __init__
self._traceback = tf_stack.extract_stack()
During handling of the above exception, another exception occurred:
NotFoundError Traceback (most recent call last)
/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/training/saver.py in restore(self, sess, save_path)
1299 try:
-> 1300 names_to_keys = object_graph_key_mapping(save_path)
1301 except errors.NotFoundError:
/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/training/saver.py in object_graph_key_mapping(checkpoint_path)
1617 reader = pywrap_tensorflow.NewCheckpointReader(checkpoint_path)
-> 1618 object_graph_string = reader.get_tensor(trackable.OBJECT_GRAPH_PROTO_KEY)
1619 object_graph_proto = (trackable_object_graph_pb2.TrackableObjectGraph())
/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/pywrap_tensorflow_internal.py in get_tensor(self, tensor_str)
914
--> 915 return CheckpointReader_GetTensor(self, compat.as_bytes(tensor_str))
916
NotFoundError: Key _CHECKPOINTABLE_OBJECT_GRAPH not found in checkpoint
During handling of the above exception, another exception occurred:
NotFoundError Traceback (most recent call last)
<ipython-input-60-25ee93a2e95a> in <module>()
20 sess.run(tf.global_variables_initializer())
21 ckpt = tf.train.get_checkpoint_state('./ckpt')
---> 22 saver.restore(sess, 'model.ckpt') # 変数データの読み込み
23
24 pred = np.argmax(logits.eval(feed_dict={x_image: [ximage], keep_prob: 1.0})[0])
/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/training/saver.py in restore(self, sess, save_path)
1304 # a helpful message (b/110263146)
1305 raise _wrap_restore_error_with_msg(
-> 1306 err, "a Variable name or other graph key that is missing")
1307
1308 # This is an object-based checkpoint. We'll print a warning and then do
NotFoundError: Restoring from checkpoint failed. This is most likely due to a Variable name or other graph key that is missing from the checkpoint. Please ensure that you have not altered the graph expected based on the checkpoint. Original error:
2 root error(s) found.
(0) Not found: Key conv1_1/Variable not found in checkpoint
[[node save_5/RestoreV2 (defined at /usr/local/lib/python3.6/dist-packages/tensorflow_core/python/framework/ops.py:1748) ]]
[[save_5/RestoreV2/_9]]
(1) Not found: Key conv1_1/Variable not found in checkpoint
[[node save_5/RestoreV2 (defined at /usr/local/lib/python3.6/dist-packages/tensorflow_core/python/framework/ops.py:1748) ]]
0 successful operations.
0 derived errors ignored.
Original stack trace for 'save_5/RestoreV2':
File "/usr/lib/python3.6/runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "/usr/lib/python3.6/runpy.py", line 85, in _run_code
exec(code, run_globals)
File "/usr/local/lib/python3.6/dist-packages/ipykernel_launcher.py", line 16, in <module>
app.launch_new_instance()
File "/usr/local/lib/python3.6/dist-packages/traitlets/config/application.py", line 664, in launch_instance
app.start()
File "/usr/local/lib/python3.6/dist-packages/ipykernel/kernelapp.py", line 477, in start
ioloop.IOLoop.instance().start()
File "/usr/local/lib/python3.6/dist-packages/tornado/ioloop.py", line 888, in start
handler_func(fd_obj, events)
File "/usr/local/lib/python3.6/dist-packages/tornado/stack_context.py", line 277, in null_wrapper
return fn(*args, **kwargs)
File "/usr/local/lib/python3.6/dist-packages/zmq/eventloop/zmqstream.py", line 450, in _handle_events
self._handle_recv()
File "/usr/local/lib/python3.6/dist-packages/zmq/eventloop/zmqstream.py", line 480, in _handle_recv
self._run_callback(callback, msg)
File "/usr/local/lib/python3.6/dist-packages/zmq/eventloop/zmqstream.py", line 432, in _run_callback
callback(*args, **kwargs)
File "/usr/local/lib/python3.6/dist-packages/tornado/stack_context.py", line 277, in null_wrapper
return fn(*args, **kwargs)
File "/usr/local/lib/python3.6/dist-packages/ipykernel/kernelbase.py", line 283, in dispatcher
return self.dispatch_shell(stream, msg)
File "/usr/local/lib/python3.6/dist-packages/ipykernel/kernelbase.py", line 235, in dispatch_shell
handler(stream, idents, msg)
File "/usr/local/lib/python3.6/dist-packages/ipykernel/kernelbase.py", line 399, in execute_request
user_expressions, allow_stdin)
File "/usr/local/lib/python3.6/dist-packages/ipykernel/ipkernel.py", line 196, in do_execute
res = shell.run_cell(code, store_history=store_history, silent=silent)
File "/usr/local/lib/python3.6/dist-packages/ipykernel/zmqshell.py", line 533, in run_cell
return super(ZMQInteractiveShell, self).run_cell(*args, **kwargs)
File "/usr/local/lib/python3.6/dist-packages/IPython/core/interactiveshell.py", line 2718, in run_cell
interactivity=interactivity, compiler=compiler, result=result)
File "/usr/local/lib/python3.6/dist-packages/IPython/core/interactiveshell.py", line 2822, in run_ast_nodes
if self.run_code(code, result):
File "/usr/local/lib/python3.6/dist-packages/IPython/core/interactiveshell.py", line 2882, in run_code
exec(code_obj, self.user_global_ns, self.user_ns)
File "<ipython-input-60-25ee93a2e95a>", line 19, in <module>
saver = tf.train.Saver()
File "/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/training/saver.py", line 828, in __init__
self.build()
File "/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/training/saver.py", line 840, in build
self._build(self._filename, build_save=True, build_restore=True)
File "/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/training/saver.py", line 878, in _build
build_restore=build_restore)
File "/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/training/saver.py", line 508, in _build_internal
restore_sequentially, reshape)
File "/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/training/saver.py", line 328, in _AddRestoreOps
restore_sequentially)
File "/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/training/saver.py", line 575, in bulk_restore
return io_ops.restore_v2(filename_tensor, names, slices, dtypes)
File "/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/ops/gen_io_ops.py", line 1696, in restore_v2
name=name)
File "/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/framework/op_def_library.py", line 794, in _apply_op_helper
op_def=op_def)
File "/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/util/deprecation.py", line 507, in new_func
return func(*args, **kwargs)
File "/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/framework/ops.py", line 3357, in create_op
attrs, op_def, compute_device)
File "/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/framework/ops.py", line 3426, in _create_op_internal
op_def=op_def)
File "/usr/local/lib/python3.6/dist-packages/tensorflow_core/python/framework/ops.py", line 1748, in __init__
self._traceback = tf_stack.extract_stack()
このような問題の解決方法をご存じでしたらご教授お願いいたします．