Module entity

EntityExtractor

class EntityExtractor(BaseComponent)

This node is used to extract entities out of documents. The most common use case for this would be as a named entity extractor. The default model used is dslim/bert-base-NER. This node can be placed in a querying pipeline to perform entity extraction on retrieved documents only, or it can be placed in an indexing pipeline so that all documents in the document store have extracted entities. The entities extracted by this Node will populate Document.entities

EntityExtractor.run

def run(documents: Optional[Union[List[Document], List[dict]]] = None) -> Tuple[Dict, str]

This is the method called when this node is used in a pipeline

EntityExtractor.extract

def extract(text)

This function can be called to perform entity extraction when using the node in isolation.

EntityExtractor.extract_batch

def extract_batch(texts: Union[List[str], List[List[str]]], batch_size: Optional[int] = None)

This function allows to extract entities out of a list of strings or a list of lists of strings.

Arguments:

• texts: List of str or list of lists of str to extract entities from.
• batch_size: Number of texts to make predictions on at a time.

simplify_ner_for_qa

def simplify_ner_for_qa(output)

Returns a simplified version of the output dictionary with the following structure: [ { answer: { ... } entities: [ { ... }, {} ] } ] The entities included are only the ones that overlap with the answer itself.