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. 2014 Jul 17;9(7):e99982. doi: 10.1371/journal.pone.0099982

Table 2. A table of non-terminals and terminals employed in feature construction.

Name Args Return Type
AND 2 non-terminal boolean Boolean
OR 2 non-terminal boolean Boolean
NOT 2 non-terminal boolean Boolean
Correlational 2 non-terminal boolean, Shift Boolean
Matches Motif Boolean
MatchesAtPosition Matches, Position Boolean
MatchesAtPositionWithShift Motif, Position,Shift Boolean
MatchesAtRegion Matches, Region Boolean
Motif-* ERC-chars Motif
Shift ERC-int Integer
Region ERC-int Integer
Length ERC-int Integer
ERC-char Inline graphic Character
ERC-int Inline graphic Integer