Description
The legclf_purchase_agreement_bert model is a Bert Sentence Embeddings Document Classifier used to classify if the document belongs to the class purchase-agreement or not (Binary Classification).
Unlike the Longformer model, this model is lighter in terms of inference time.
Predicted Entities
purchase-agreement, other
How to use
document_assembler = nlp.DocumentAssembler()\
.setInputCol("text")\
.setOutputCol("document")
embeddings = nlp.BertSentenceEmbeddings.pretrained("sent_bert_base_cased", "en")\
.setInputCols("document")\
.setOutputCol("sentence_embeddings")
doc_classifier = legal.ClassifierDLModel.pretrained("legclf_purchase_agreement_bert", "en", "legal/models")\
.setInputCols(["sentence_embeddings"])\
.setOutputCol("category")
nlpPipeline = nlp.Pipeline(stages=[
document_assembler,
embeddings,
doc_classifier])
df = spark.createDataFrame([["YOUR TEXT HERE"]]).toDF("text")
model = nlpPipeline.fit(df)
result = model.transform(df)
Results
+-------+
|result|
+-------+
|[purchase-agreement]|
|[other]|
|[other]|
|[purchase-agreement]|
Model Information
| Model Name: | legclf_purchase_agreement_bert |
| Compatibility: | Legal NLP 1.0.0+ |
| License: | Licensed |
| Edition: | Official |
| Input Labels: | [sentence_embeddings] |
| Output Labels: | [class] |
| Language: | en |
| Size: | 22.8 MB |
References
Legal documents, scrapped from the Internet, and classified in-house + SEC documents
Benchmarking
label precision recall f1-score support
other 0.90 0.93 0.92 82
purchase-agreement 0.85 0.81 0.83 42
accuracy - - 0.89 124
macro-avg 0.88 0.87 0.87 124
weighted-avg 0.89 0.89 0.89 124