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Table 3 Number of terms in the test corpus per type assignment method and per resource.

From: Event extraction of bacteria biotopes: a knowledge-intensive NLP-based approach

  MBTO EnvO DTa2
% of corpus terms 16% 9% 10%
Exact match 147 46 72
Main head of term 133 114 103
Subterm head 5 4 3
Ambiguous head 26 21 17
Total head matching 164
(52%)
139
(91%)
123
(63%)
Total 311 185 195