Relation extraction tasks utilities

---

---

RelationExtractionInput

Subclass of IOModel.

---

__init__

Arguments:

• text (str): Text to process.

• relations (List[Relation]): Relations parameters.

• entities (List[ClassifiedEntity]): Entities to use.

---

---

---

RelationExtractionOutput

Subclass of IOModel.

---

__init__

Arguments:

• output (List[Triplet]): Relations triplets.

---

---

---

Relation

---

__init__

Arguments:

• relation (str): Relation label.

• pairs_filter (Optional[List[Tuple[str, str]]], optional): Expected pairs for relation. If equals to None all pairs will be returned. Defaults to None.

• distance_threshold (int, optional): Distance threshold. It specifies the max distance between spans in the text (i.e., the end of the span that is closer to the start of the text and the start of the next one). Defaults to -1 (no distance threshold).

---

---

---

Triplet

---

__init__

Arguments:

• source (ClassifiedEntity): Source entity in the relation.

• relation (str): Relation label.

• target (ClassifiedEntity): Target entity in the relation.

• score (float): Relation score.

---

---