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| author | Gard Spreemann <gspr@nonempty.org> | 2020-12-16 15:17:15 +0100 |
|---|---|---|
| committer | Gard Spreemann <gspr@nonempty.org> | 2020-12-16 15:17:15 +0100 |
| commit | 289baa1aadd248940439698173caaa345ac0ba3d (patch) | |
| tree | 719f4cee23b2eb5b98b51fb7520336df920024ae /src/Bottleneck_distance/include/gudhi/Bottleneck.h | |
| parent | 5a450e1d5e0faac25085fb96d756d5963d0a15c4 (diff) | |
| parent | b6a3def70b15baf2dda0844762dcd291e240d2c1 (diff) | |
Merge branch 'dfsg/latest' into debian/sid
Diffstat (limited to 'src/Bottleneck_distance/include/gudhi/Bottleneck.h')
| -rw-r--r-- | src/Bottleneck_distance/include/gudhi/Bottleneck.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/Bottleneck_distance/include/gudhi/Bottleneck.h b/src/Bottleneck_distance/include/gudhi/Bottleneck.h index e466828a..c916898d 100644 --- a/src/Bottleneck_distance/include/gudhi/Bottleneck.h +++ b/src/Bottleneck_distance/include/gudhi/Bottleneck.h @@ -35,8 +35,12 @@ namespace persistence_diagram { inline double bottleneck_distance_approx(Persistence_graph& g, double e) { double b_lower_bound = 0.; - double b_upper_bound = g.diameter_bound(); - const double alpha = std::pow(g.size(), 1. / 5.); + double b_upper_bound = g.max_dist_to_diagonal(); + int siz = g.size(); + if (siz <= 1) + // The value of alpha would be wrong in this case + return b_upper_bound; + const double alpha = std::pow(siz, 1. / 5.); Graph_matching m(g); Graph_matching biggest_unperfect(g); while (b_upper_bound - b_lower_bound > 2 * e) { |