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50 lines
2.6 KiB
Python
50 lines
2.6 KiB
Python
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from pathlib import Path
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import pytest
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from haystack.graph_retriever import Text2SparqlRetriever
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from haystack.knowledge_graph.graphdb import GraphDBKnowledgeGraph
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from haystack.preprocessor.utils import fetch_archive_from_http
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@pytest.mark.graphdb
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def test_graph_retrieval(graphdb_fixture):
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# TODO rename doc_dir
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graph_dir = "../data/tutorial10_knowledge_graph/"
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s3_url = "https://fandom-qa.s3-eu-west-1.amazonaws.com/triples_and_config.zip"
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fetch_archive_from_http(url=s3_url, output_dir=graph_dir)
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# Fetch a pre-trained BART model that translates natural language questions to SPARQL queries
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model_dir = "../saved_models/tutorial10_knowledge_graph/"
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s3_url = "https://fandom-qa.s3-eu-west-1.amazonaws.com/saved_models/hp_v3.4.zip"
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fetch_archive_from_http(url=s3_url, output_dir=model_dir)
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kg = GraphDBKnowledgeGraph(index="tutorial_10_index")
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kg.delete_index()
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kg.create_index(config_path=Path(graph_dir+"repo-config.ttl"))
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kg.import_from_ttl_file(index="tutorial_10_index",
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path=Path(graph_dir+"triples.ttl"))
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triple = {'p': {'type': 'uri', 'value': 'https://deepset.ai/harry_potter/_paternalgrandfather'}, 's': {'type': 'uri', 'value': 'https://deepset.ai/harry_potter/Melody_fawley'}, 'o': {'type': 'uri', 'value': 'https://deepset.ai/harry_potter/Marshall_fawley'}}
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triples = kg.get_all_triples()
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assert len(triples) > 0
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assert triple in triples
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# Define prefixes for names of resources so that we can use shorter resource names in queries
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prefixes = """PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
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PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
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PREFIX hp: <https://deepset.ai/harry_potter/>
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"""
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kg.prefixes = prefixes
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kgqa_retriever = Text2SparqlRetriever(knowledge_graph=kg,
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model_name_or_path=model_dir+"hp_v3.4")
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result = kgqa_retriever.retrieve(query="In which house is Harry Potter?")
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assert result[0] == {'answer': ['https://deepset.ai/harry_potter/Gryffindor'], 'prediction_meta': {'model': 'Text2SparqlRetriever', 'sparql_query': 'select ?a { hp:Harry_potter hp:house ?a . }'}}
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result = kgqa_retriever._query_kg(sparql_query="select distinct ?sbj where { ?sbj hp:job hp:Keeper_of_keys_and_grounds . }")
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assert result[0][0] == "https://deepset.ai/harry_potter/Rubeus_hagrid"
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result = kgqa_retriever._query_kg(
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sparql_query="select distinct ?obj where { <https://deepset.ai/harry_potter/Hermione_granger> <https://deepset.ai/harry_potter/patronus> ?obj . }")
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assert result[0][0] == "https://deepset.ai/harry_potter/Otter"
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