CoType: Joint Extraction of Typed Entities and Relations with Knowledge Bases
Table 1: A study of type label noise. (1): %entity mentions with multiple sibling entity types (e.g., actor, singer) in the given entity type hierarchy; (2): %relation mentions with multiple relation types, for the three experiment datasets.
['[BOLD] Dataset', '[BOLD] NYT\xa0', '[BOLD] Wiki-KBP\xa0,', '[BOLD] BioInfer\xa0']
In Fig. (e.g., born_in, president_of) are assigned to the relation mention in sentence S1 (while only born_in is correct within the context). Similarly, all KB types for Barack Obama (e.g., politician, artist) are assigned to the mention “Obama" in S1 (while only person is true). Label noise becomes an impediment to learn effective type classifiers.