Coordination
#
In SUD, the dependency relation between conjucts or a coordination.
pattern { X -[conj:coord]-> Y }
Chained conjuncts
#
In SUD, when a coordination concerns more than two conjuncts, each conjunct is attached to the head of the previous one in a chain.
This helps to reduce cumbersome long-distance relations.
We also believe it to be a more accurate representation of the cognitive process of coordination.
English
Note that it is different from UD annotation where all conjuncts of a coordination are attached to the head of the first conjunct in a bouquet.
English
Embedded coordination
#
The conjunct of a coordination can itself be a coordination.
Theoretically, this embedding can be nested indefinitely.
In natural corpora, however, there is typically only one level of iteration.
The conj:coord
label does not make a distinction between embedded relations and surface relations because they form a single chain.
However, these relations can be distinguished with the use of the extension @emb
for embedded coordinations.
English
pattern { X -[conj:coord@emb]-> Y }
Shared dependents
#
Left dependents on coordination are attached to the head of the coordination. Since the head of a coordination is the head of the leftmost conjunct, it is not possible to distinguish these dependents from the own dependents of the leftmost conjunct.
Right dependents on a coordination are attached to the head of the rightmost conjunct, but they can be confused with the own dependents of this conjunct.
As a consequence, left and right dependents on a coordination can be marked with feature Shared
with value Yes
and No
,
The value Yes
distinguishes them from the own dependents of the respective leftmost and rightmost conjuncts.
pattern { X [Shared]; X -[conj:coord]-> Y }
X.Shared