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Table 1 Rules for syntactic feature generation

From: Establishing a baseline for literature mining human genetic variants and their relationships to disease cohorts

Rule name Description
Verb in dependency path In the level of root (verb), shows subordinate dependency relation types and directions
No verb in dependency path Determine whether the sentence has a verb or not between two entities. If not, detect nominalization or weak nominalization rule is processed
Contains clause Check if the sentence has any clauses
Clause distance Distance between clause and entities in left and right, the closest ones. The entities might be all to the right or to the left or divided
Same head Check if two entities have same parent
Full tree path Use it in dependency parsing process
Path length Path length from the parent node to child node