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Table 7 

Comparison of features used for the resolution of non-NA anaphora. SM03 = Strube and Müller (2003); M07 = Müller (2007, 2008); CST10 = Chen, Su, and Tan (2010); KH12 = Kolhatkar and Hirst (2012); JGGR15 = Jauhar et al. (2015).

 SM03M07CST10KH12JGGR15
Anaphor features 
Form of anaphor ✓ ✓   ✓ ✓ 
Is demonstrative   ✓     ✓ 
Grammatical function ✓         
Embedding depth ✓ ✓       
Position in sentence         ✓ 
Verb presence         ✓ 
Parent lemma         ✓ 
Parent transitivity         ✓ 
Probability of parent to govern a clause ✓       ✓ 
Parent + grammatical function         ✓ 
Dependency label path to root         ✓ 
Complement clause type   ✓       
Co-occurance patterns     ✓     
  
Antecedent features
Grammatical function of antecedent ✓   ✓ ✓   
Length in tokens   ✓   ✓   
Number of arguments   ✓       
Syntactic type   ✓   ✓   
Semantic role       ✓   
Contains modal verb   ✓   ✓   
Contains finite verb   ✓       
Contains subordinating conjunction   ✓   ✓   
Sentence w/existential there construction   ✓       
Probability of progressive/perfect aspect   ✓       
Embedding depth ✓ ✓ ✓ ✓   
Dependency label path to root         ✓ 
Syntactic parse tree     ✓     
Is negated         ✓ 
Is transitive   ✓     ✓ 
Right-frontier constraint (✓) ✓     ✓ 
I-incompatibility   ✓     ✓ 
Lexical overlap w/title (✓)     ✓   
Lexical overlap w/anaphor sentence       ✓   
Neighbor is preposition or punctuation       ✓   
  
Relational features
Distance in tokens ✓ ✓ ✓   ✓ 
Distance in sentences ✓ ✓ ✓ ✓ ✓ 
Distance (other units) ✓ ✓       
Anaphora vs. cataphora   ✓   ✓ ✓ 
Whether antecedent is ancestor of anaphor   ✓     ✓ 
In same sentence   ✓   ✓   
Whether grammatical functions match ✓         
Whether tense of ante. and ana. parent match   ✓       
 SM03M07CST10KH12JGGR15
Anaphor features 
Form of anaphor ✓ ✓   ✓ ✓ 
Is demonstrative   ✓     ✓ 
Grammatical function ✓         
Embedding depth ✓ ✓       
Position in sentence         ✓ 
Verb presence         ✓ 
Parent lemma         ✓ 
Parent transitivity         ✓ 
Probability of parent to govern a clause ✓       ✓ 
Parent + grammatical function         ✓ 
Dependency label path to root         ✓ 
Complement clause type   ✓       
Co-occurance patterns     ✓     
  
Antecedent features
Grammatical function of antecedent ✓   ✓ ✓   
Length in tokens   ✓   ✓   
Number of arguments   ✓       
Syntactic type   ✓   ✓   
Semantic role       ✓   
Contains modal verb   ✓   ✓   
Contains finite verb   ✓       
Contains subordinating conjunction   ✓   ✓   
Sentence w/existential there construction   ✓       
Probability of progressive/perfect aspect   ✓       
Embedding depth ✓ ✓ ✓ ✓   
Dependency label path to root         ✓ 
Syntactic parse tree     ✓     
Is negated         ✓ 
Is transitive   ✓     ✓ 
Right-frontier constraint (✓) ✓     ✓ 
I-incompatibility   ✓     ✓ 
Lexical overlap w/title (✓)     ✓   
Lexical overlap w/anaphor sentence       ✓   
Neighbor is preposition or punctuation       ✓   
  
Relational features
Distance in tokens ✓ ✓ ✓   ✓ 
Distance in sentences ✓ ✓ ✓ ✓ ✓ 
Distance (other units) ✓ ✓       
Anaphora vs. cataphora   ✓   ✓ ✓ 
Whether antecedent is ancestor of anaphor   ✓     ✓ 
In same sentence   ✓   ✓   
Whether grammatical functions match ✓         
Whether tense of ante. and ana. parent match   ✓       
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