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Table 4 The eight relevance levels defined by Relemed.

From: Relemed: sentence-level search engine with relevance score for the MEDLINE database of biomedical articles

Relevance level Query must match
1 T and A and M
2 T and A
3 T and M
4 A and M
5 T
6 A
7 M
  1. T = title
  2. A = at least one abstract sentence
  3. M = concatenated MeSH terms
  4. TAM = title, abstract, and MeSH concatenated into one sentence