Continuous Training / Model tuning / Initialize with pre-trained Model

[mhmgad]

I want to continue/resume training a pre-trained model using new triples. We may assume that there are no new entities or relations but new instants.

What is the best way to load the pre-trained model?

Or is it possible to implement something like? where continue_training=True is a flag to skip initialization?

import numpy as np
from ampligraph.latent_features import ComplEx

model = ComplEx(batches_count=1, seed=555, epochs=20, k=10)
X = np.array([['a', 'y', 'b'],
              ['b', 'y', 'a'],
              ['a', 'y', 'c'],
              ['c', 'y', 'a'],
              ['a', 'y', 'd'],
              ['c', 'y', 'd'],
              ['b', 'y', 'c'],
              ['f', 'y', 'e']])
model.fit(X)
print(model.get_embeddings(['f','e'], embedding_type='entity'))

X2 = np.array([['a', 'y', 'b'],
              ['c', 'y', 'd'],
              ['b', 'y', 'c'],
              ['f', 'y', 'm'],
              ['f', 'y', 'n'],
              ['f', 'y', 'a'],
              ['f', 'y', 'c'],
               ['f', 'z', 'c']])
model.fit(X2, continue_training=True)

[mhmgad]

Quoting @lukostaz answer on slack for loading pre-trained model:

"In theory, you could write a customized Initializer to replace the stock Xavier, RandomNormal, etc: http://docs.ampligraph.org/en/1.2.0/ampligraph.latent_features.html#initializers
http://docs.ampligraph.org/en/1.2.0/generated/ampligraph.latent_features.Initializer.html#ampligraph.latent_features.Initializer
You could inject your pre-trained embeddings to the training loop each time you train the model again - you could even play around with the save/restore utilities:
http://docs.ampligraph.org/en/1.2.0/ampligraph.utils.html#saving-restoring-models "

I think this is the clean solution but it is hard for someone not involved with the code base and may lead to inconsistencies that are hard to discover.

[shaulz]

Hi Luca, what is the status of this enhancement?

Thanks,
Shaul