Delete loading script
Browse files
E3C.py
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# pip install bs4 syntok
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import os
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import random
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import datasets
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import numpy as np
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from bs4 import BeautifulSoup, ResultSet
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from syntok.tokenizer import Tokenizer
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tokenizer = Tokenizer()
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_CITATION = """\
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@report{Magnini2021, \
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author = {Bernardo Magnini and Begoña Altuna and Alberto Lavelli and Manuela Speranza \
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and Roberto Zanoli and Fondazione Bruno Kessler}, \
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keywords = {Clinical data,clinical enti-ties,corpus,multilingual,temporal information}, \
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title = {The E3C Project: \
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European Clinical Case Corpus El proyecto E3C: European Clinical Case Corpus}, \
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url = {https://uts.nlm.nih.gov/uts/umls/home}, \
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year = {2021}, \
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}
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"""
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_DESCRIPTION = """\
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E3C is a freely available multilingual corpus (English, French, Italian, Spanish, and Basque) \
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of semantically annotated clinical narratives to allow for the linguistic analysis, benchmarking, \
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and training of information extraction systems. It consists of two types of annotations: \
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(i) clinical entities (e.g., pathologies), (ii) temporal information and factuality (e.g., events). \
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Researchers can use the benchmark training and test splits of our corpus to develop and test \
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their own models.
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"""
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_URL = "https://github.com/hltfbk/E3C-Corpus/archive/refs/tags/v2.0.0.zip"
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_LANGUAGES = ["English","Spanish","Basque","French","Italian"]
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class E3C(datasets.GeneratorBasedBuilder):
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BUILDER_CONFIGS = [
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datasets.BuilderConfig(name=f"{lang}_clinical", version="1.0.0", description=f"The {lang} subset of the E3C corpus") for lang in _LANGUAGES
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]
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BUILDER_CONFIGS += [
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datasets.BuilderConfig(name=f"{lang}_temporal", version="1.0.0", description=f"The {lang} subset of the E3C corpus") for lang in _LANGUAGES
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]
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DEFAULT_CONFIG_NAME = "French_clinical"
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def _info(self):
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if self.config.name == "default":
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self.config.name = self.DEFAULT_CONFIG_NAME
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if self.config.name.find("clinical") != -1:
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names = ["O","B-CLINENTITY","I-CLINENTITY"]
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elif self.config.name.find("temporal") != -1:
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names = ["O", "B-EVENT", "B-ACTOR", "B-BODYPART", "B-TIMEX3", "B-RML", "I-EVENT", "I-ACTOR", "I-BODYPART", "I-TIMEX3", "I-RML"]
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features = datasets.Features(
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{
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"id": datasets.Value("string"),
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"text": datasets.Value("string"),
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"tokens": datasets.Sequence(datasets.Value("string")),
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"ner_tags": datasets.Sequence(
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datasets.features.ClassLabel(
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names=names,
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),
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),
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}
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)
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return datasets.DatasetInfo(
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description=_DESCRIPTION,
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features=features,
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citation=_CITATION,
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supervised_keys=None,
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)
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def _split_generators(self, dl_manager):
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data_dir = dl_manager.download_and_extract(_URL)
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if self.config.name.find("clinical") != -1:
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return [
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datasets.SplitGenerator(
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name=datasets.Split.TRAIN,
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gen_kwargs={
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"filepath": os.path.join(data_dir, "E3C-Corpus-2.0.0/data_annotation", self.config.name.replace("_clinical",""), "layer2"),
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"split": "train",
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},
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),
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datasets.SplitGenerator(
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name=datasets.Split.VALIDATION,
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gen_kwargs={
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"filepath": os.path.join(data_dir, "E3C-Corpus-2.0.0/data_annotation", self.config.name.replace("_clinical",""), "layer2"),
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"split": "validation",
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},
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),
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datasets.SplitGenerator(
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name=datasets.Split.TEST,
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gen_kwargs={
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"filepath": os.path.join(data_dir, "E3C-Corpus-2.0.0/data_annotation", self.config.name.replace("_clinical",""), "layer1"),
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"split": "test",
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},
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),
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]
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elif self.config.name.find("temporal") != -1:
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return [
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datasets.SplitGenerator(
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name=datasets.Split.TRAIN,
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gen_kwargs={
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"filepath": os.path.join(data_dir, "E3C-Corpus-2.0.0/data_annotation", self.config.name.replace("_temporal",""), "layer1"),
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"split": "train",
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},
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),
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datasets.SplitGenerator(
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name=datasets.Split.VALIDATION,
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gen_kwargs={
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"filepath": os.path.join(data_dir, "E3C-Corpus-2.0.0/data_annotation", self.config.name.replace("_temporal",""), "layer1"),
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"split": "validation",
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},
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),
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datasets.SplitGenerator(
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name=datasets.Split.TEST,
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gen_kwargs={
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"filepath": os.path.join(data_dir, "E3C-Corpus-2.0.0/data_annotation", self.config.name.replace("_temporal",""), "layer1"),
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"split": "test",
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},
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),
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]
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@staticmethod
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def get_annotations(entities: ResultSet, text: str) -> list:
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return [[
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int(entity.get("begin")),
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int(entity.get("end")),
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text[int(entity.get("begin")) : int(entity.get("end"))],
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] for entity in entities]
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def get_clinical_annotations(self, entities: ResultSet, text: str) -> list:
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return [[
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int(entity.get("begin")),
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int(entity.get("end")),
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text[int(entity.get("begin")) : int(entity.get("end"))],
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entity.get("entityID"),
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] for entity in entities]
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def get_parsed_data(self, filepath: str):
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for root, _, files in os.walk(filepath):
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for file in files:
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with open(f"{root}/{file}") as soup_file:
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soup = BeautifulSoup(soup_file, "xml")
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text = soup.find("cas:Sofa").get("sofaString")
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yield {
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"CLINENTITY": self.get_clinical_annotations(soup.find_all("custom:CLINENTITY"), text),
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"EVENT": self.get_annotations(soup.find_all("custom:EVENT"), text),
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"ACTOR": self.get_annotations(soup.find_all("custom:ACTOR"), text),
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"BODYPART": self.get_annotations(soup.find_all("custom:BODYPART"), text),
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"TIMEX3": self.get_annotations(soup.find_all("custom:TIMEX3"), text),
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"RML": self.get_annotations(soup.find_all("custom:RML"), text),
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"SENTENCE": self.get_annotations(soup.find_all("type4:Sentence"), text),
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"TOKENS": self.get_annotations(soup.find_all("type4:Token"), text),
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}
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def _generate_examples(self, filepath, split):
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all_res = []
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key = 0
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parsed_content = self.get_parsed_data(filepath)
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for content in parsed_content:
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for sentence in content["SENTENCE"]:
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tokens = [(
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token.offset + sentence[0],
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token.offset + sentence[0] + len(token.value),
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token.value,
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) for token in list(tokenizer.tokenize(sentence[-1]))]
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filtered_tokens = list(
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filter(
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lambda token: token[0] >= sentence[0] and token[1] <= sentence[1],
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tokens,
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)
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)
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tokens_offsets = [
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[token[0] - sentence[0], token[1] - sentence[0]] for token in filtered_tokens
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]
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clinical_labels = ["O"] * len(filtered_tokens)
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clinical_cuid = ["CUI_LESS"] * len(filtered_tokens)
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temporal_information_labels = ["O"] * len(filtered_tokens)
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for entity_type in ["CLINENTITY","EVENT","ACTOR","BODYPART","TIMEX3","RML"]:
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if len(content[entity_type]) != 0:
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for entities in list(content[entity_type]):
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annotated_tokens = [
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idx_token
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for idx_token, token in enumerate(filtered_tokens)
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if token[0] >= entities[0] and token[1] <= entities[1]
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]
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for idx_token in annotated_tokens:
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if entity_type == "CLINENTITY":
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if idx_token == annotated_tokens[0]:
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clinical_labels[idx_token] = f"B-{entity_type}"
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else:
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clinical_labels[idx_token] = f"I-{entity_type}"
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clinical_cuid[idx_token] = entities[-1]
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else:
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if idx_token == annotated_tokens[0]:
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temporal_information_labels[idx_token] = f"B-{entity_type}"
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else:
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temporal_information_labels[idx_token] = f"I-{entity_type}"
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if self.config.name.find("clinical") != -1:
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_labels = clinical_labels
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elif self.config.name.find("temporal") != -1:
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_labels = temporal_information_labels
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all_res.append({
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"id": key,
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"text": sentence[-1],
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"tokens": list(map(lambda token: token[2], filtered_tokens)),
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"ner_tags": _labels,
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})
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key += 1
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if self.config.name.find("clinical") != -1:
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if split != "test":
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ids = [r["id"] for r in all_res]
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random.seed(4)
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random.shuffle(ids)
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random.shuffle(ids)
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random.shuffle(ids)
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train, validation = np.split(ids, [int(len(ids)*0.8738)])
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if split == "train":
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allowed_ids = list(train)
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elif split == "validation":
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allowed_ids = list(validation)
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for r in all_res:
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if r["id"] in allowed_ids:
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yield r["id"], r
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else:
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for r in all_res:
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yield r["id"], r
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elif self.config.name.find("temporal") != -1:
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ids = [r["id"] for r in all_res]
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random.seed(4)
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random.shuffle(ids)
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random.shuffle(ids)
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random.shuffle(ids)
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train, validation, test = np.split(ids, [int(len(ids)*0.70), int(len(ids)*0.80)])
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if split == "train":
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allowed_ids = list(train)
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elif split == "validation":
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allowed_ids = list(validation)
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elif split == "test":
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allowed_ids = list(test)
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for r in all_res:
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if r["id"] in allowed_ids:
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yield r["id"], r
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