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33 lines
1.3 KiB
Python
33 lines
1.3 KiB
Python
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from haystack.nodes import FARMReader
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import torch
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def test_distillation():
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student = FARMReader(model_name_or_path="prajjwal1/bert-tiny")
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teacher = FARMReader(model_name_or_path="prajjwal1/bert-small")
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# create a checkpoint of weights before distillation
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student_weights = []
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for name, weight in student.inferencer.model.named_parameters():
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if "weight" in name and weight.requires_grad:
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student_weights.append(torch.clone(weight))
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assert len(student_weights) == 22
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student_weights.pop(-2) # pooler is not updated due to different attention head
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student.distil_from(teacher, data_dir="samples/squad", train_filename="tiny.json")
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# create new checkpoint
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new_student_weights = [torch.clone(param) for param in student.inferencer.model.parameters()]
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new_student_weights = []
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for name, weight in student.inferencer.model.named_parameters():
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if "weight" in name and weight.requires_grad:
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new_student_weights.append(weight)
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assert len(new_student_weights) == 22
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new_student_weights.pop(-2) # pooler is not updated due to different attention head
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# check if weights have changed
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assert not any(torch.equal(old_weight, new_weight) for old_weight, new_weight in zip(student_weights, new_student_weights))
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