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16 lines
541 B
Python
16 lines
541 B
Python
import pytest
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from fusion import weighted_score_fusion
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def test_weighted_score_fusion_preserves_top_score_on_duplicate_doc_id():
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"""Verify weighted score fusion preserves top score when duplicate doc_ids exist in ranked list."""
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ranked_lists = {
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"dense": [("doc1", 0.95), ("doc2", 0.80), ("doc1", 0.10)],
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"sparse": [("doc1", 10.0), ("doc2", 5.0)]
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}
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results = weighted_score_fusion(ranked_lists)
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assert results[0][0] == "doc1"
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assert results[1][0] == "doc2"
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assert results[0][1] > results[1][1]
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