A node type to mark long distance dependencies of syntactic movement:

(-NONE- nodes)

In the Penn Treebank project, traces are used to co-index tokens for the dependencies between them.


Traces

The project involves building treebanks from the Brown, Switchboard, ATIS, and Wall Street Journal corpora of English, as well as treebanks in Arabic and Chinese

University of Michigan - Ann Arbor

A treebank is a syntactically annotated corpus that every sentence in the collection is paired with a corresponding parse tree; building a treebank involves the use of parsers and manual correction process.

Treebank

An on-going but a helpful book resource about NLP
https://web.stanford.edu/~jurafsky/slp3/

Learn Before

Related

Learn After