Table 1 Some entries in the context matrix. Scores are derived from the ratio between frequency of the given word in the given position with respect to the gene (position +1 means immediately after the gene name, position +2 means two words behind, etc.) and the total frequency of the word.
From: Text Detective: a rule-based system for gene annotation in biomedical texts
WORD | POSITION | |||||
|---|---|---|---|---|---|---|
| Â | -3 | -2 | -1 | +1 | +2 | +3 |
gene | 0 | 0.5 | 5.0 | 5.0 | 0.5 | 0 |
function | 0 | 1.8 | 0 | 2.1 | 0 | 0 |
cell | 0 | 0 | -2.5 | -5.0 | 0 | 0 |