Legal Lease Agreement Document Classifier (Bert Sentence Embeddings)

Description

The legclf_lease_agreement_bert model is a Bert Sentence Embeddings Document Classifier used to classify if the document belongs to the class lease-agreement or not (Binary Classification).

Unlike the Longformer model, this model is lighter in terms of inference time.

Predicted Entities

lease-agreement, other

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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_lease_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|
+-------+
|[lease-agreement]|
|[other]|
|[other]|
|[lease-agreement]|

Model Information

Model Name: legclf_lease_agreement_bert
Compatibility: Legal NLP 1.0.0+
License: Licensed
Edition: Official
Input Labels: [sentence_embeddings]
Output Labels: [class]
Language: en
Size: 22.9 MB

References

Legal documents, scrapped from the Internet, and classified in-house + SEC documents

Benchmarking


          label precision recall  f1-score  support
lease-agreement      0.95   0.88      0.91       40
          other      0.94   0.98      0.96       82
       accuracy         -      -      0.94      122
      macro-avg      0.94   0.93      0.93      122
   weighted-avg      0.94   0.94      0.94      122