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Growing Neural Gas can't be pickled

See original GitHub issue

Hi, When I pickle GNG model, and then load it, it can’t continue training. It gives an error, connecting with edges. dill library has the same error.

~/python3.6/site-packages/neupy/algorithms/competitive/growing_neural_gas.py in train(self, input_train, summary, epochs)
    299             input_test=None, target_test=None,
    300             epochs=epochs, epsilon=None,
--> 301             summary=summary)
    302 
    303     def train_epoch(self, input_train, target_train=None):

~/python3.6/site-packages/neupy/algorithms/base.py in train(self, input_train, target_train, input_test, target_test, epochs, epsilon, summary)
    407 
    408                 try:
--> 409                     train_error = train_epoch(input_train, target_train)
    410 
    411                     if can_compute_validation_error:

~/python3.6/site-packages/neupy/algorithms/competitive/growing_neural_gas.py in train_epoch(self, input_train, target_train)
    346             for to_neuron in list(graph.edges_per_node[closest_neuron]):
    347                 edge_id = make_edge_id(to_neuron, closest_neuron)
--> 348                 age = graph.edges[edge_id]
    349 
    350                 if age >= max_edge_age:

KeyError: (<neupy.algorithms.competitive.growing_neural_gas.NeuronNode object at 0x7f2d9ecff780>, <neupy.algorithms.competitive.growing_neural_gas.NeuronNode object at 0x7f2d9ecff7f0>)

Issue Analytics

State:
Created 5 years ago
Comments:6 (4 by maintainers)

Top GitHub Comments

1reaction

VioletMcommented, Jan 17, 2019

Thank you very much!

I will test it and will let you know about results.

Best regards, Violetta Mishechkina

ср, 16 янв. 2019 г., 23:55 Yurii Shevchuk notifications@github.com:

I added fix into the release/v0.7.3 branch, See PR #230 https://github.com/itdxer/neupy/pull/230 I will appreciate if you can test that it works for you. I added separate case for the pickle storage: https://github.com/itdxer/neupy/pull/230/files#diff-b10ea35f973f702cfca0ff6e3824230fR100

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/itdxer/neupy/issues/229#issuecomment-454937332, or mute the thread https://github.com/notifications/unsubscribe-auth/AIt05aEHnLLTJNsKiV7yLkS8OMfox_05ks5vD5GwgaJpZM4aDaTA .

0reactions

VioletMcommented, Jan 18, 2019

Release 0.7.3 works fine, thanks!

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