57 lines
1.7 KiB
Python
57 lines
1.7 KiB
Python
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"""Testing for bicluster metrics module"""
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import numpy as np
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from sklearn.metrics import consensus_score
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from sklearn.metrics.cluster._bicluster import _jaccard
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from sklearn.utils._testing import assert_almost_equal
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def test_jaccard():
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a1 = np.array([True, True, False, False])
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a2 = np.array([True, True, True, True])
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a3 = np.array([False, True, True, False])
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a4 = np.array([False, False, True, True])
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assert _jaccard(a1, a1, a1, a1) == 1
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assert _jaccard(a1, a1, a2, a2) == 0.25
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assert _jaccard(a1, a1, a3, a3) == 1.0 / 7
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assert _jaccard(a1, a1, a4, a4) == 0
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def test_consensus_score():
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a = [[True, True, False, False], [False, False, True, True]]
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b = a[::-1]
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assert consensus_score((a, a), (a, a)) == 1
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assert consensus_score((a, a), (b, b)) == 1
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assert consensus_score((a, b), (a, b)) == 1
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assert consensus_score((a, b), (b, a)) == 1
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assert consensus_score((a, a), (b, a)) == 0
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assert consensus_score((a, a), (a, b)) == 0
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assert consensus_score((b, b), (a, b)) == 0
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assert consensus_score((b, b), (b, a)) == 0
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def test_consensus_score_issue2445():
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"""Different number of biclusters in A and B"""
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a_rows = np.array(
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[
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[True, True, False, False],
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[False, False, True, True],
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[False, False, False, True],
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]
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)
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a_cols = np.array(
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[
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[True, True, False, False],
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[False, False, True, True],
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[False, False, False, True],
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]
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)
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idx = [0, 2]
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s = consensus_score((a_rows, a_cols), (a_rows[idx], a_cols[idx]))
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# B contains 2 of the 3 biclusters in A, so score should be 2/3
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assert_almost_equal(s, 2.0 / 3.0)
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