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The KnowledgeGraph class is responsible for adding, updating, and querying entities and relationships in the graph database, based on a provided ontology.

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__init__(self, ontology: KnowledgeOntology, use_neo4j: bool = False)

Initializes a new instance of the KnowledgeGraph class. 
from a1facts.graph import KnowledgeGraph
from a1facts.ontology import KnowledgeOntology

ontology = KnowledgeOntology(ontology_file="ontology.yaml")
kg = KnowledgeGraph(ontology=ontology, use_neo4j=False)
Parameters:
  • ontology (KnowledgeOntology): The ontology defining the graph’s structure.
  • use_neo4j (bool, optional): Whether to use Neo4j as the backend. Defaults to False.

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query(self, query: str)

Executes a natural language query against the knowledge graph. 
result = kg.query("what do you know about how UnitedHealth competes with CVS?")
print(result)
Parameters:
  • query (str): The natural language query to execute.
Returns:
  • The content of the agent’s response as a string.

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update_knowledge(self, knowledge: str)

Updates the knowledge graph with new, unstructured information. 
knowledge_to_add = "UnitedHealth Group is a diversified health and well-being company."
result = kg.update_knowledge(knowledge_to_add)
print(result)
Parameters:
  • knowledge (str): A string of unstructured knowledge to add to the graph.
Returns:
  • The content of the agent’s response as a string.

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close(self)

Closes the connection to the graph database. 
kg.close()