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Table 12 F gain(Δ F ) of MeSH compared to BOS

From: The first step in the development of text mining technology for cancer risk assessment: identifying and organizing scientific evidence in risk assessment literature

   Distribution of abstracts per class freq. range
Change in F Σ Classes 20-100 100 - 200 200 - 1100
Δ F > 1% 16 (43%) 75% 33% 8%
F | ≤ 1% 15 (41%) 6% 44% 75%
Δ F < -1% 6 (16%) 19% 33% 17%