spaCy/spacy/tests/parser/test_model.py
Daniël de Kok e27c60a702
Reimplement distillation with oracle cut size (#12214)
* Improve the correctness of _parse_patch

* If there are no more actions, do not attempt to make further
  transitions, even if not all states are final.
* Assert that the number of actions for a step is the same as
  the number of states.

* Reimplement distillation with oracle cut size

The code for distillation with an oracle cut size was not reimplemented
after the parser refactor. We did not notice, because we did not have
tests for this functionality. This change brings back the functionality
and adds this to the parser tests.

* Rename states2actions to _states_to_actions for consistency

* Test distillation max cuts in NER

* Mark parser/NER tests as slow

* Typo

* Fix invariant in _states_diff_to_actions

* Rename _init_batch -> _init_batch_from_teacher

* Ninja edit the ninja edit

* Check that we raise an exception when we pass the incorrect number or actions

* Remove unnecessary get

Co-authored-by: Madeesh Kannan <shadeMe@users.noreply.github.com>

* Write out condition more explicitly

---------

Co-authored-by: Madeesh Kannan <shadeMe@users.noreply.github.com>
2023-02-21 15:47:18 +01:00

62 lines
1.6 KiB
Python

import numpy
import pytest
from spacy.lang.en import English
from spacy.ml.tb_framework import TransitionModelInputs
from spacy.training import Example
TRAIN_DATA = [
(
"They trade mortgage-backed securities.",
{
"heads": [1, 1, 4, 4, 5, 1, 1],
"deps": ["nsubj", "ROOT", "compound", "punct", "nmod", "dobj", "punct"],
},
),
(
"I like London and Berlin.",
{
"heads": [1, 1, 1, 2, 2, 1],
"deps": ["nsubj", "ROOT", "dobj", "cc", "conj", "punct"],
},
),
]
@pytest.fixture
def nlp_parser():
nlp = English()
parser = nlp.add_pipe("parser")
train_examples = []
for text, annotations in TRAIN_DATA:
train_examples.append(Example.from_dict(nlp.make_doc(text), annotations))
for dep in annotations["deps"]:
parser.add_label(dep)
nlp.initialize()
return nlp, parser
def test_incorrect_number_of_actions(nlp_parser):
nlp, parser = nlp_parser
doc = nlp.make_doc("test")
# Too many actions for the number of docs
with pytest.raises(AssertionError):
parser.model.predict(
TransitionModelInputs(
docs=[doc], moves=parser.moves, actions=[numpy.array([0, 0], dtype="i")]
)
)
# Too few actions for the number of docs
with pytest.raises(AssertionError):
parser.model.predict(
TransitionModelInputs(
docs=[doc, doc],
moves=parser.moves,
actions=[numpy.array([0], dtype="i")],
)
)