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README.md
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---
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tags:
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- flair
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- entity-mention-linker
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---
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## biosyn-sapbert-bc5cdr-chemical-no-ab3p
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Biomedical Entity Mention Linking for chemical:
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- Model: [dmis-lab/biosyn-sapbert-bc5cdr-chemical](https://huggingface.co/dmis-lab/biosyn-sapbert-bc5cdr-chemical)
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- Dictionary: [CTD Chemicals](https://ctdbase.org/help/chemDetailHelp.jsp) (See [License](https://ctdbase.org/about/legal.jsp))
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NOTE: This model variant does not perform abbreviation resolution via [A3bP](https://github.com/ncbi-nlp/Ab3P)
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### Demo: How to use in Flair
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Requires:
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- **[Flair](https://github.com/flairNLP/flair/)>=0.14.0** (`pip install flair` or `pip install git+https://github.com/flairNLP/flair.git`)
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```python
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from flair.data import Sentence
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from flair.models import Classifier, EntityMentionLinker
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from flair.tokenization import SciSpacyTokenizer
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sentence = Sentence(
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"The mutation in the ABCD1 gene causes X-linked adrenoleukodystrophy, "
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"a neurodegenerative disease, which is exacerbated by exposure to high "
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"levels of mercury in dolphin populations.",
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use_tokenizer=SciSpacyTokenizer()
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)
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# load hunflair to detect the entity mentions we want to link.
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tagger = Classifier.load("hunflair-chemical")
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tagger.predict(sentence)
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# load the linker and dictionary
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linker = EntityMentionLinker.load("chemical-linker")
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linker.predict(sentence)
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# print the results for each entity mention:
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for span in sentence.get_spans(tagger.label_type):
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for link in span.get_labels(linker.label_type):
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print(f"{span.text} -> {link.value}")
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```
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As an alternative to downloading the already precomputed model (much storage). You can also build the model
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and compute the embeddings for the dataset using:
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```python
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linker = EntityMentionLinker.build("dmis-lab/biosyn-sapbert-bc5cdr-chemical", dictionary_name_or_path="ctd-chemicals", hybrid_search=True)
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```
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This will reduce the download requirements, at the cost of computation.
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