cache in run_classifier + various fixes to the examples
This commit is contained in:
thomwolf
571
examples/run_classifier_dataset_utils.py
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571
examples/run_classifier_dataset_utils.py
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@@ -0,0 +1,571 @@
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# coding=utf-8
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# Copyright 2018 The Google AI Language Team Authors and The HuggingFace Inc. team.
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# Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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""" BERT classification fine-tuning: utilities to work with GLUE tasks """
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from __future__ import absolute_import, division, print_function
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import csv
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import logging
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import os
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import sys
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from scipy.stats import pearsonr, spearmanr
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from sklearn.metrics import matthews_corrcoef, f1_score
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logger = logging.getLogger(__name__)
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class InputExample(object):
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"""A single training/test example for simple sequence classification."""
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def __init__(self, guid, text_a, text_b=None, label=None):
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"""Constructs a InputExample.
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Args:
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guid: Unique id for the example.
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text_a: string. The untokenized text of the first sequence. For single
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sequence tasks, only this sequence must be specified.
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text_b: (Optional) string. The untokenized text of the second sequence.
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Only must be specified for sequence pair tasks.
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label: (Optional) string. The label of the example. This should be
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specified for train and dev examples, but not for test examples.
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"""
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self.guid = guid
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self.text_a = text_a
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self.text_b = text_b
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self.label = label
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class InputFeatures(object):
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"""A single set of features of data."""
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def __init__(self, input_ids, input_mask, segment_ids, label_id):
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self.input_ids = input_ids
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self.input_mask = input_mask
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self.segment_ids = segment_ids
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self.label_id = label_id
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class DataProcessor(object):
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"""Base class for data converters for sequence classification data sets."""
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def get_train_examples(self, data_dir):
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"""Gets a collection of `InputExample`s for the train set."""
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raise NotImplementedError()
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def get_dev_examples(self, data_dir):
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"""Gets a collection of `InputExample`s for the dev set."""
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raise NotImplementedError()
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def get_labels(self):
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"""Gets the list of labels for this data set."""
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raise NotImplementedError()
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@classmethod
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def _read_tsv(cls, input_file, quotechar=None):
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"""Reads a tab separated value file."""
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with open(input_file, "r", encoding="utf-8") as f:
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reader = csv.reader(f, delimiter="\t", quotechar=quotechar)
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lines = []
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for line in reader:
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if sys.version_info[0] == 2:
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line = list(unicode(cell, 'utf-8') for cell in line)
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lines.append(line)
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return lines
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class MrpcProcessor(DataProcessor):
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"""Processor for the MRPC data set (GLUE version)."""
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def get_train_examples(self, data_dir):
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"""See base class."""
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logger.info("LOOKING AT {}".format(os.path.join(data_dir, "train.tsv")))
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return self._create_examples(
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self._read_tsv(os.path.join(data_dir, "train.tsv")), "train")
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def get_dev_examples(self, data_dir):
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"""See base class."""
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return self._create_examples(
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self._read_tsv(os.path.join(data_dir, "dev.tsv")), "dev")
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def get_labels(self):
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"""See base class."""
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return ["0", "1"]
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def _create_examples(self, lines, set_type):
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"""Creates examples for the training and dev sets."""
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examples = []
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for (i, line) in enumerate(lines):
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if i == 0:
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continue
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guid = "%s-%s" % (set_type, i)
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text_a = line[3]
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text_b = line[4]
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label = line[0]
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examples.append(
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InputExample(guid=guid, text_a=text_a, text_b=text_b, label=label))
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return examples
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class MnliProcessor(DataProcessor):
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"""Processor for the MultiNLI data set (GLUE version)."""
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def get_train_examples(self, data_dir):
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"""See base class."""
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return self._create_examples(
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self._read_tsv(os.path.join(data_dir, "train.tsv")), "train")
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def get_dev_examples(self, data_dir):
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"""See base class."""
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return self._create_examples(
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self._read_tsv(os.path.join(data_dir, "dev_matched.tsv")),
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"dev_matched")
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def get_labels(self):
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"""See base class."""
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return ["contradiction", "entailment", "neutral"]
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def _create_examples(self, lines, set_type):
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"""Creates examples for the training and dev sets."""
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examples = []
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for (i, line) in enumerate(lines):
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if i == 0:
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continue
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guid = "%s-%s" % (set_type, line[0])
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text_a = line[8]
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text_b = line[9]
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label = line[-1]
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examples.append(
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InputExample(guid=guid, text_a=text_a, text_b=text_b, label=label))
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return examples
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class MnliMismatchedProcessor(MnliProcessor):
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"""Processor for the MultiNLI Mismatched data set (GLUE version)."""
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def get_dev_examples(self, data_dir):
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"""See base class."""
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return self._create_examples(
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self._read_tsv(os.path.join(data_dir, "dev_mismatched.tsv")),
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"dev_matched")
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class ColaProcessor(DataProcessor):
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"""Processor for the CoLA data set (GLUE version)."""
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def get_train_examples(self, data_dir):
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"""See base class."""
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return self._create_examples(
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self._read_tsv(os.path.join(data_dir, "train.tsv")), "train")
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def get_dev_examples(self, data_dir):
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"""See base class."""
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return self._create_examples(
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self._read_tsv(os.path.join(data_dir, "dev.tsv")), "dev")
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def get_labels(self):
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"""See base class."""
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return ["0", "1"]
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def _create_examples(self, lines, set_type):
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"""Creates examples for the training and dev sets."""
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examples = []
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for (i, line) in enumerate(lines):
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guid = "%s-%s" % (set_type, i)
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text_a = line[3]
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label = line[1]
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examples.append(
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InputExample(guid=guid, text_a=text_a, text_b=None, label=label))
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return examples
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class Sst2Processor(DataProcessor):
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"""Processor for the SST-2 data set (GLUE version)."""
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def get_train_examples(self, data_dir):
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"""See base class."""
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return self._create_examples(
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self._read_tsv(os.path.join(data_dir, "train.tsv")), "train")
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def get_dev_examples(self, data_dir):
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"""See base class."""
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return self._create_examples(
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self._read_tsv(os.path.join(data_dir, "dev.tsv")), "dev")
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def get_labels(self):
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"""See base class."""
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return ["0", "1"]
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def _create_examples(self, lines, set_type):
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"""Creates examples for the training and dev sets."""
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examples = []
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for (i, line) in enumerate(lines):
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if i == 0:
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continue
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guid = "%s-%s" % (set_type, i)
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text_a = line[0]
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label = line[1]
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examples.append(
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InputExample(guid=guid, text_a=text_a, text_b=None, label=label))
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return examples
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class StsbProcessor(DataProcessor):
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"""Processor for the STS-B data set (GLUE version)."""
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def get_train_examples(self, data_dir):
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"""See base class."""
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return self._create_examples(
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self._read_tsv(os.path.join(data_dir, "train.tsv")), "train")
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def get_dev_examples(self, data_dir):
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"""See base class."""
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return self._create_examples(
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self._read_tsv(os.path.join(data_dir, "dev.tsv")), "dev")
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def get_labels(self):
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"""See base class."""
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return [None]
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def _create_examples(self, lines, set_type):
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"""Creates examples for the training and dev sets."""
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examples = []
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for (i, line) in enumerate(lines):
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if i == 0:
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continue
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guid = "%s-%s" % (set_type, line[0])
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text_a = line[7]
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text_b = line[8]
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label = line[-1]
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examples.append(
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InputExample(guid=guid, text_a=text_a, text_b=text_b, label=label))
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return examples
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class QqpProcessor(DataProcessor):
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"""Processor for the QQP data set (GLUE version)."""
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def get_train_examples(self, data_dir):
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"""See base class."""
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return self._create_examples(
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self._read_tsv(os.path.join(data_dir, "train.tsv")), "train")
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def get_dev_examples(self, data_dir):
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"""See base class."""
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return self._create_examples(
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self._read_tsv(os.path.join(data_dir, "dev.tsv")), "dev")
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def get_labels(self):
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"""See base class."""
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return ["0", "1"]
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def _create_examples(self, lines, set_type):
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"""Creates examples for the training and dev sets."""
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examples = []
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for (i, line) in enumerate(lines):
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if i == 0:
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continue
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guid = "%s-%s" % (set_type, line[0])
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try:
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text_a = line[3]
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text_b = line[4]
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label = line[5]
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except IndexError:
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continue
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examples.append(
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InputExample(guid=guid, text_a=text_a, text_b=text_b, label=label))
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return examples
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class QnliProcessor(DataProcessor):
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"""Processor for the QNLI data set (GLUE version)."""
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def get_train_examples(self, data_dir):
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"""See base class."""
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return self._create_examples(
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self._read_tsv(os.path.join(data_dir, "train.tsv")), "train")
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def get_dev_examples(self, data_dir):
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"""See base class."""
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return self._create_examples(
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self._read_tsv(os.path.join(data_dir, "dev.tsv")),
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"dev_matched")
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def get_labels(self):
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"""See base class."""
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return ["entailment", "not_entailment"]
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def _create_examples(self, lines, set_type):
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"""Creates examples for the training and dev sets."""
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examples = []
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for (i, line) in enumerate(lines):
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if i == 0:
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continue
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guid = "%s-%s" % (set_type, line[0])
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text_a = line[1]
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text_b = line[2]
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label = line[-1]
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examples.append(
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InputExample(guid=guid, text_a=text_a, text_b=text_b, label=label))
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return examples
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class RteProcessor(DataProcessor):
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"""Processor for the RTE data set (GLUE version)."""
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def get_train_examples(self, data_dir):
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"""See base class."""
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return self._create_examples(
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self._read_tsv(os.path.join(data_dir, "train.tsv")), "train")
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def get_dev_examples(self, data_dir):
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"""See base class."""
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return self._create_examples(
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self._read_tsv(os.path.join(data_dir, "dev.tsv")), "dev")
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def get_labels(self):
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"""See base class."""
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return ["entailment", "not_entailment"]
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def _create_examples(self, lines, set_type):
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"""Creates examples for the training and dev sets."""
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examples = []
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for (i, line) in enumerate(lines):
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if i == 0:
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continue
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guid = "%s-%s" % (set_type, line[0])
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text_a = line[1]
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text_b = line[2]
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label = line[-1]
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examples.append(
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InputExample(guid=guid, text_a=text_a, text_b=text_b, label=label))
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return examples
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class WnliProcessor(DataProcessor):
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"""Processor for the WNLI data set (GLUE version)."""
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def get_train_examples(self, data_dir):
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"""See base class."""
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return self._create_examples(
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self._read_tsv(os.path.join(data_dir, "train.tsv")), "train")
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def get_dev_examples(self, data_dir):
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"""See base class."""
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return self._create_examples(
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self._read_tsv(os.path.join(data_dir, "dev.tsv")), "dev")
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def get_labels(self):
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"""See base class."""
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return ["0", "1"]
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def _create_examples(self, lines, set_type):
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"""Creates examples for the training and dev sets."""
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examples = []
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for (i, line) in enumerate(lines):
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if i == 0:
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continue
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guid = "%s-%s" % (set_type, line[0])
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text_a = line[1]
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text_b = line[2]
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label = line[-1]
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examples.append(
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InputExample(guid=guid, text_a=text_a, text_b=text_b, label=label))
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return examples
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def convert_examples_to_features(examples, label_list, max_seq_length,
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tokenizer, output_mode):
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"""Loads a data file into a list of `InputBatch`s."""
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label_map = {label : i for i, label in enumerate(label_list)}
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features = []
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for (ex_index, example) in enumerate(examples):
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if ex_index % 10000 == 0:
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logger.info("Writing example %d of %d" % (ex_index, len(examples)))
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tokens_a = tokenizer.tokenize(example.text_a)
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tokens_b = None
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if example.text_b:
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tokens_b = tokenizer.tokenize(example.text_b)
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# Modifies `tokens_a` and `tokens_b` in place so that the total
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# length is less than the specified length.
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# Account for [CLS], [SEP], [SEP] with "- 3"
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_truncate_seq_pair(tokens_a, tokens_b, max_seq_length - 3)
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else:
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# Account for [CLS] and [SEP] with "- 2"
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if len(tokens_a) > max_seq_length - 2:
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tokens_a = tokens_a[:(max_seq_length - 2)]
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# The convention in BERT is:
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# (a) For sequence pairs:
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# tokens: [CLS] is this jack ##son ##ville ? [SEP] no it is not . [SEP]
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# type_ids: 0 0 0 0 0 0 0 0 1 1 1 1 1 1
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# (b) For single sequences:
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# tokens: [CLS] the dog is hairy . [SEP]
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# type_ids: 0 0 0 0 0 0 0
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#
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# Where "type_ids" are used to indicate whether this is the first
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# sequence or the second sequence. The embedding vectors for `type=0` and
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# `type=1` were learned during pre-training and are added to the wordpiece
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# embedding vector (and position vector). This is not *strictly* necessary
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# since the [SEP] token unambiguously separates the sequences, but it makes
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# it easier for the model to learn the concept of sequences.
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#
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# For classification tasks, the first vector (corresponding to [CLS]) is
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# used as as the "sentence vector". Note that this only makes sense because
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# the entire model is fine-tuned.
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tokens = ["[CLS]"] + tokens_a + ["[SEP]"]
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segment_ids = [0] * len(tokens)
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if tokens_b:
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tokens += tokens_b + ["[SEP]"]
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segment_ids += [1] * (len(tokens_b) + 1)
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input_ids = tokenizer.convert_tokens_to_ids(tokens)
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# The mask has 1 for real tokens and 0 for padding tokens. Only real
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# tokens are attended to.
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input_mask = [1] * len(input_ids)
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# Zero-pad up to the sequence length.
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padding = [0] * (max_seq_length - len(input_ids))
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input_ids += padding
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input_mask += padding
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segment_ids += padding
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assert len(input_ids) == max_seq_length
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assert len(input_mask) == max_seq_length
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assert len(segment_ids) == max_seq_length
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if output_mode == "classification":
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label_id = label_map[example.label]
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elif output_mode == "regression":
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label_id = float(example.label)
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else:
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raise KeyError(output_mode)
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if ex_index < 5:
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logger.info("*** Example ***")
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logger.info("guid: %s" % (example.guid))
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logger.info("tokens: %s" % " ".join(
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[str(x) for x in tokens]))
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logger.info("input_ids: %s" % " ".join([str(x) for x in input_ids]))
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logger.info("input_mask: %s" % " ".join([str(x) for x in input_mask]))
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logger.info(
|
||||
"segment_ids: %s" % " ".join([str(x) for x in segment_ids]))
|
||||
logger.info("label: %s (id = %d)" % (example.label, label_id))
|
||||
|
||||
features.append(
|
||||
InputFeatures(input_ids=input_ids,
|
||||
input_mask=input_mask,
|
||||
segment_ids=segment_ids,
|
||||
label_id=label_id))
|
||||
return features
|
||||
|
||||
|
||||
def _truncate_seq_pair(tokens_a, tokens_b, max_length):
|
||||
"""Truncates a sequence pair in place to the maximum length."""
|
||||
|
||||
# This is a simple heuristic which will always truncate the longer sequence
|
||||
# one token at a time. This makes more sense than truncating an equal percent
|
||||
# of tokens from each, since if one sequence is very short then each token
|
||||
# that's truncated likely contains more information than a longer sequence.
|
||||
while True:
|
||||
total_length = len(tokens_a) + len(tokens_b)
|
||||
if total_length <= max_length:
|
||||
break
|
||||
if len(tokens_a) > len(tokens_b):
|
||||
tokens_a.pop()
|
||||
else:
|
||||
tokens_b.pop()
|
||||
|
||||
|
||||
def simple_accuracy(preds, labels):
|
||||
return (preds == labels).mean()
|
||||
|
||||
|
||||
def acc_and_f1(preds, labels):
|
||||
acc = simple_accuracy(preds, labels)
|
||||
f1 = f1_score(y_true=labels, y_pred=preds)
|
||||
return {
|
||||
"acc": acc,
|
||||
"f1": f1,
|
||||
"acc_and_f1": (acc + f1) / 2,
|
||||
}
|
||||
|
||||
|
||||
def pearson_and_spearman(preds, labels):
|
||||
pearson_corr = pearsonr(preds, labels)[0]
|
||||
spearman_corr = spearmanr(preds, labels)[0]
|
||||
return {
|
||||
"pearson": pearson_corr,
|
||||
"spearmanr": spearman_corr,
|
||||
"corr": (pearson_corr + spearman_corr) / 2,
|
||||
}
|
||||
|
||||
|
||||
def compute_metrics(task_name, preds, labels):
|
||||
assert len(preds) == len(labels)
|
||||
if task_name == "cola":
|
||||
return {"mcc": matthews_corrcoef(labels, preds)}
|
||||
elif task_name == "sst-2":
|
||||
return {"acc": simple_accuracy(preds, labels)}
|
||||
elif task_name == "mrpc":
|
||||
return acc_and_f1(preds, labels)
|
||||
elif task_name == "sts-b":
|
||||
return pearson_and_spearman(preds, labels)
|
||||
elif task_name == "qqp":
|
||||
return acc_and_f1(preds, labels)
|
||||
elif task_name == "mnli":
|
||||
return {"acc": simple_accuracy(preds, labels)}
|
||||
elif task_name == "mnli-mm":
|
||||
return {"acc": simple_accuracy(preds, labels)}
|
||||
elif task_name == "qnli":
|
||||
return {"acc": simple_accuracy(preds, labels)}
|
||||
elif task_name == "rte":
|
||||
return {"acc": simple_accuracy(preds, labels)}
|
||||
elif task_name == "wnli":
|
||||
return {"acc": simple_accuracy(preds, labels)}
|
||||
else:
|
||||
raise KeyError(task_name)
|
||||
|
||||
processors = {
|
||||
"cola": ColaProcessor,
|
||||
"mnli": MnliProcessor,
|
||||
"mnli-mm": MnliMismatchedProcessor,
|
||||
"mrpc": MrpcProcessor,
|
||||
"sst-2": Sst2Processor,
|
||||
"sts-b": StsbProcessor,
|
||||
"qqp": QqpProcessor,
|
||||
"qnli": QnliProcessor,
|
||||
"rte": RteProcessor,
|
||||
"wnli": WnliProcessor,
|
||||
}
|
||||
|
||||
output_modes = {
|
||||
"cola": "classification",
|
||||
"mnli": "classification",
|
||||
"mrpc": "classification",
|
||||
"sst-2": "classification",
|
||||
"sts-b": "regression",
|
||||
"qqp": "classification",
|
||||
"qnli": "classification",
|
||||
"rte": "classification",
|
||||
"wnli": "classification",
|
||||
}
|
||||
Reference in New Issue
Block a user