. Author manuscript; available in PMC: 2018 Jan 17.

Published in final edited form as: J Data Inf Sci. 2017 Dec;2(4):43–64. doi: 10.1515/jdis-2017-0019

Table 1.

Eight features used to characterize each B-term.

1. Does the B-term occur in more than one paper within literatures A and C?

2. Do the AB and BC sub-literatures share any MeSH terms?

3. Does the B-term map to at least one UMLS semantic category?

4. Does the B-term have a high literature cohesion score?

5. Is the B-term moderately frequent within MEDLINE as a whole?

6. Did the B-term first appear recently within MEDLINE as a whole?

7. Is the B-term highly characteristic within literature A or C?

8. Do the words within the B-term all occur on the customized 1400 word stoplist?

Reprinted from Torvik & Smalheiser (2007) with permission. See this reference for definitions and details regarding how the features were numerically scored.