Description
This relation extraction model links extractions from anatomical entities (such as Site_Breast or Site_Lung) to other clinical entities (such as Tumor_Finding or Cancer_Surgery).
Predicted Entities
is_location_of, O
How to use
Use relation pairs to include only the combinations of entities that are relevant in your case.
document_assembler = DocumentAssembler()\
.setInputCol("text")\
.setOutputCol("document")
sentence_detector = SentenceDetectorDLModel.pretrained("sentence_detector_dl_healthcare","en","clinical/models")\
.setInputCols(["document"])\
.setOutputCol("sentence")
tokenizer = Tokenizer() \
.setInputCols(["sentence"]) \
.setOutputCol("token")
word_embeddings = WordEmbeddingsModel().pretrained("embeddings_clinical", "en", "clinical/models")\
.setInputCols(["sentence", "token"]) \
.setOutputCol("embeddings")
ner = MedicalNerModel.pretrained("ner_oncology_wip", "en", "clinical/models") \
.setInputCols(["sentence", "token", "embeddings"]) \
.setOutputCol("ner")
ner_converter = NerConverterInternal() \
.setInputCols(["sentence", "token", "ner"]) \
.setOutputCol("ner_chunk")
pos_tagger = PerceptronModel.pretrained("pos_clinical", "en", "clinical/models") \
.setInputCols(["sentence", "token"]) \
.setOutputCol("pos_tags")
dependency_parser = DependencyParserModel.pretrained("dependency_conllu", "en") \
.setInputCols(["sentence", "pos_tags", "token"]) \
.setOutputCol("dependencies")
re_ner_chunk_filter = RENerChunksFilter()\
.setInputCols(["ner_chunk", "dependencies"])\
.setOutputCol("re_ner_chunk")\
.setMaxSyntacticDistance(10)\
.setRelationPairs(["Tumor_Finding-Site_Breast", "Site_Breast-Tumor_Finding", "Tumor_Finding-Anatomical_Site", "Anatomical_Site-Tumor_Finding"])
re_model = RelationExtractionDLModel.pretrained("redl_oncology_location_biobert", "en", "clinical/models")\
.setInputCols(["re_ner_chunk", "sentence"])\
.setOutputCol("relation_extraction")
pipeline = Pipeline(stages=[document_assembler,
sentence_detector,
tokenizer,
word_embeddings,
ner,
ner_converter,
pos_tagger,
dependency_parser,
re_ner_chunk_filter,
re_model])
data = spark.createDataFrame([["In April 2011, she first noticed a lump in her right breast."]]).toDF("text")
result = pipeline.fit(data).transform(data)
```scala
val document_assembler = new DocumentAssembler()
.setInputCol("text")
.setOutputCol("document")
val sentence_detector = SentenceDetectorDLModel.pretrained("sentence_detector_dl_healthcare","en","clinical/models")
.setInputCols(Array("document"))
.setOutputCol("sentence")
val tokenizer = new Tokenizer()
.setInputCols(Array("sentence"))
.setOutputCol("token")
val word_embeddings = WordEmbeddingsModel().pretrained("embeddings_clinical", "en", "clinical/models")
.setInputCols(Array("sentence", "token"))
.setOutputCol("embeddings")
val ner = MedicalNerModel.pretrained("ner_oncology_wip", "en", "clinical/models")
.setInputCols(Array("sentence", "token", "embeddings"))
.setOutputCol("ner")
val ner_converter = new NerConverterInternal()
.setInputCols(Array("sentence", "token", "ner"))
.setOutputCol("ner_chunk")
val pos_tagger = PerceptronModel.pretrained("pos_clinical", "en", "clinical/models")
.setInputCols(Array("sentence", "token"))
.setOutputCol("pos_tags")
val dependency_parser = DependencyParserModel.pretrained("dependency_conllu", "en")
.setInputCols(Array("sentence", "pos_tags", "token"))
.setOutputCol("dependencies")
val re_ner_chunk_filter = new RENerChunksFilter()
.setInputCols(Array("ner_chunk", "dependencies"))
.setOutputCol("re_ner_chunk")
.setMaxSyntacticDistance(10)
.setRelationPairs(Array("Tumor_Finding-Site_Breast", "Site_Breast-Tumor_Finding","Tumor_Finding-Anatomical_Site", "Anatomical_Site-Tumor_Finding"))
val re_model = RelationExtractionDLModel.pretrained("redl_oncology_location_biobert", "en", "clinical/models")
.setPredictionThreshold(0.5f)
.setInputCols(Array("re_ner_chunk", "sentence"))
.setOutputCol("relation_extraction")
val pipeline = new Pipeline().setStages(Array(document_assembler,
sentence_detector,
tokenizer,
word_embeddings,
ner,
ner_converter,
pos_tagger,
dependency_parser,
re_ner_chunk_filter,
re_model))
val data = Seq("""In April 2011, she first noticed a lump in her right breast.""").toDS.toDF("text")
val result = pipeline.fit(data).transform(data)
Results
+--------------+-------------+-------------+-----------+------+-----------+-------------+-----------+------+----------+
| relation| entity1|entity1_begin|entity1_end|chunk1| entity2|entity2_begin|entity2_end|chunk2|confidence|
+--------------+-------------+-------------+-----------+------+-----------+-------------+-----------+------+----------+
|is_location_of|Tumor_Finding| 35| 38| lump|Site_Breast| 53| 58|breast| 0.9628376|
+--------------+-------------+-------------+-----------+------+-----------+-------------+-----------+------+----------+
Model Information
| Model Name: | redl_oncology_location_biobert |
| Compatibility: | Healthcare NLP 5.4.0+ |
| License: | Licensed |
| Edition: | Official |
| Language: | en |
| Size: | 401.7 MB |
References
In-house annotated oncology case reports.
Benchmarking
label recall precision f1
O 0.90 0.94 0.92
is_location_of 0.94 0.90 0.92
macro-avg 0.92 0.92 0.92