An acl
tag appears in Stanford dependency parses with no explanation in the manual. For example, a sentence like "are you going there" you gives something like:
root(ROOT-0, are-1)
nsubj(are-1, you-2)
acl(you-2, going-3) <--
advmod(going-3, there-4)
Can someone explain what this tag is?
Dependency parsing is the process of analyzing the grammatical structure of a sentence based on the dependencies between the words in a sentence. In Dependency parsing, various tags represent the relationship between two words in a sentence. These tags are the dependency tags.
A dependency parser analyzes the grammatical structure of a sentence, establishing relationships between "head" words and words which modify those heads.
Dependency parsing is the task of extracting a dependency parse of a sentence that represents its grammatical structure and defines the relationships between “head” words and words, which modify those heads.
This is a new label in the Universal Dependencies representation, documented here: http://universaldependencies.github.io/docs/u/dep/acl.html
From the link:
acl stands for finite and non-finite clauses that modify a nominal. The acl relation contrasts with the advcl relation, which is used for adverbial clauses that modify a predicate. The head of the acl relation is the noun that is modified, and the dependent is the head of the clause that modifies the noun.
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