47 lines
1.3 KiB
Python
47 lines
1.3 KiB
Python
import asyncio
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from typing import Type, List
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from pydantic import BaseModel
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from cognee.infrastructure.databases.graph import get_graph_engine
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from cognee.modules.chunking.models.DocumentChunk import DocumentChunk
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from cognee.modules.data.extraction.knowledge_graph import extract_content_graph
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from cognee.modules.graph.utils import (
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expand_with_nodes_and_edges,
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retrieve_existing_edges,
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)
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from cognee.tasks.storage import add_data_points
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async def extract_graph_from_data(
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data_chunks: list[DocumentChunk], graph_model: Type[BaseModel]
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) -> List[DocumentChunk]:
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"""
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Extracts and integrates a knowledge graph from the text content of document chunks using a specified graph model.
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"""
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chunk_graphs = await asyncio.gather(
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*[extract_content_graph(chunk.text, graph_model) for chunk in data_chunks]
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)
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graph_engine = await get_graph_engine()
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existing_edges_map = await retrieve_existing_edges(
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data_chunks,
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chunk_graphs,
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graph_engine,
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)
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graph_nodes, graph_edges = expand_with_nodes_and_edges(
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data_chunks,
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chunk_graphs,
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existing_edges_map,
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)
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if len(graph_nodes) > 0:
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await add_data_points(graph_nodes)
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if len(graph_edges) > 0:
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await graph_engine.add_edges(graph_edges)
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return data_chunks
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