Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/networkx/algorithms/centrality/tests/test_harmonic_centrality.py @ 0:4f3585e2f14b draft default tip
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author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |
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1 """ |
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2 Tests for degree centrality. |
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3 """ |
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4 import networkx as nx |
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5 from networkx.algorithms.centrality import harmonic_centrality |
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6 from networkx.testing import almost_equal |
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7 |
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8 |
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9 class TestClosenessCentrality: |
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10 @classmethod |
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11 def setup_class(cls): |
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12 cls.P3 = nx.path_graph(3) |
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13 cls.P4 = nx.path_graph(4) |
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14 cls.K5 = nx.complete_graph(5) |
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15 |
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16 cls.C4 = nx.cycle_graph(4) |
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17 cls.C5 = nx.cycle_graph(5) |
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18 |
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19 cls.T = nx.balanced_tree(r=2, h=2) |
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20 |
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21 cls.Gb = nx.DiGraph() |
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22 cls.Gb.add_edges_from([(0, 1), (0, 2), (0, 4), (2, 1), (2, 3), (4, 3)]) |
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23 |
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24 def test_p3_harmonic(self): |
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25 c = harmonic_centrality(self.P3) |
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26 d = {0: 1.5, 1: 2, 2: 1.5} |
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27 for n in sorted(self.P3): |
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28 assert almost_equal(c[n], d[n], places=3) |
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29 |
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30 def test_p4_harmonic(self): |
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31 c = harmonic_centrality(self.P4) |
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32 d = {0: 1.8333333, 1: 2.5, 2: 2.5, 3: 1.8333333} |
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33 for n in sorted(self.P4): |
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34 assert almost_equal(c[n], d[n], places=3) |
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35 |
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36 def test_clique_complete(self): |
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37 c = harmonic_centrality(self.K5) |
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38 d = {0: 4, 1: 4, 2: 4, 3: 4, 4: 4} |
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39 for n in sorted(self.P3): |
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40 assert almost_equal(c[n], d[n], places=3) |
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41 |
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42 def test_cycle_C4(self): |
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43 c = harmonic_centrality(self.C4) |
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44 d = {0: 2.5, 1: 2.5, 2: 2.5, 3: 2.5} |
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45 for n in sorted(self.C4): |
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46 assert almost_equal(c[n], d[n], places=3) |
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47 |
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48 def test_cycle_C5(self): |
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49 c = harmonic_centrality(self.C5) |
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50 d = {0: 3, 1: 3, 2: 3, 3: 3, 4: 3, 5: 4} |
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51 for n in sorted(self.C5): |
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52 assert almost_equal(c[n], d[n], places=3) |
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53 |
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54 def test_bal_tree(self): |
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55 c = harmonic_centrality(self.T) |
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56 d = {0: 4.0, 1: 4.1666, 2: 4.1666, 3: 2.8333, 4: 2.8333, 5: 2.8333, 6: 2.8333} |
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57 for n in sorted(self.T): |
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58 assert almost_equal(c[n], d[n], places=3) |
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59 |
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60 def test_exampleGraph(self): |
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61 c = harmonic_centrality(self.Gb) |
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62 d = {0: 0, 1: 2, 2: 1, 3: 2.5, 4: 1} |
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63 for n in sorted(self.Gb): |
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64 assert almost_equal(c[n], d[n], places=3) |
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65 |
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66 def test_weighted_harmonic(self): |
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67 XG = nx.DiGraph() |
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68 XG.add_weighted_edges_from( |
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69 [ |
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70 ("a", "b", 10), |
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71 ("d", "c", 5), |
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72 ("a", "c", 1), |
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73 ("e", "f", 2), |
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74 ("f", "c", 1), |
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75 ("a", "f", 3), |
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76 ] |
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77 ) |
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78 c = harmonic_centrality(XG, distance="weight") |
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79 d = {"a": 0, "b": 0.1, "c": 2.533, "d": 0, "e": 0, "f": 0.83333} |
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80 for n in sorted(XG): |
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81 assert almost_equal(c[n], d[n], places=3) |
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82 |
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83 def test_empty(self): |
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84 G = nx.DiGraph() |
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85 c = harmonic_centrality(G, distance="weight") |
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86 d = {} |
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87 assert c == d |
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88 |
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89 def test_singleton(self): |
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90 G = nx.DiGraph() |
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91 G.add_node(0) |
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92 c = harmonic_centrality(G, distance="weight") |
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93 d = {0: 0} |
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94 assert c == d |