Building a Treebank for Italian: a Data-driven Annotation Schema
Cristina Bosco, Vincenzo Lombardo, D. Vassallo, Leonardo Lesmo · 2000
Many natural language researchers are currently turning their attention to treebank development and trying to achieve accuracy and corpus data coverage in their representation formats.This paper presents a data-driven annotation schema developed for an Italian treebank ensuring data coverage and consistency between annotation of linguistic phenomena.The schema is a dependency-based format centered upon the notion of predicate-argument structure augmented with traces to represent discontinuous constituents.The treebank development involves an annotation process performed by a human annotator helped by an interactive parsing tool that builds incrementally syntactic representation of the sentence.To increase the syntactic knowledge of this parser, a specific data-driven strategy has been applied.We describe the cyclical development of the annotation schema highlighting the richness and flexibility of the format, and we present some representational issues.