Outlier Detection Using DBSCAN - GBIF Data Blog

Geographic outliers at GBIF are a known problem.

Outliers can be errors, coordinates with high uncertainty, or simply occurrences from an undersampled region.

This is a companion discussion topic for the original entry at https://data-blog.gbif.org/post/outlier-detection-using-dbscan/
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It is difficult to know it GBIF “should” do it. But certainly a good tool to offer if available.

Careful here ! An outlier can also be a signal of something we did not know until now, remember that we only know half of the truth, i.e. what is behind us - Nature still has many surprises for us in store - the hole in the ozone layer was initially treated as an outlier, luckily they did not delete the data !! - of course that is what is real science about: discover something new and challenging through outliers … :wink: