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Table 2 Syntactic features used in identifying causal relations.

From: Semi-supervised learning of causal relations in biomedical scientific discourse

ID Short description T AP AS AR
X1 partOfSpeech(token)    
X2 syntCat(token)    
X3 partOfSpeech(L3)    
X4 syntCat(L3)    
X5 syntCatPathFromRoot(token)    
X6 syntCatCollapsedPathFromRoot(token)    
X7 syntCatPositionPathFromRoot(token)    
X8 ancestor (token,[1..3])    
X9 lowestCommonAncestor (token,neighbourOf (token,left,1))    
X10 distanceBetween(token, X9)    
X11 posString (trigger)    
X12 syntCatString (trigger)    
X13 posStringDupl (trigger)    
X14 syntCatStringDupl (sent)    
X15 containsMainVerb(trigger)    
X16 mainVerb(sent)     
X17 voiceOfVerb(trigger)