UD_Italian-ISDT
Treebank card from UD release 2.18: metadata and texts come from UD_Italian-ISDT/README.md; size is counted by streaming the .conllu files and checked against the release stats.xml. Generated by tools/treebanks build; do not edit by hand. Papers: Papers: UD_Italian-ISDT; seeds: seeds/; converter: convert.md.
| Field | Value |
|---|---|
| UD name | UD_Italian-ISDT |
| Language | Italian (it) |
| Family | IE |
| Treebank code | it_isdt |
| UD page | universaldependencies.org/treebanks/it isdt/index.html |
| License | CC BY-NC-SA 3.0 |
| Genres | legal, news, wiki |
| Text in data | yes |
| Parallel | no |
| In UD since | UD v1.0 |
| Authors | Cristina Bosco; Alessandro Lenci; Simonetta Montemagni; Maria Simi |
| Contact | simi@di.unipi.it |
| Development | outside the UD repo (elsewhere): fixes go to the source or the converter |
Annotation layers
| Layer | Origin |
|---|---|
| Lemmas | converted from manual |
| UPOS | converted from manual |
| XPOS | manual native |
| Features | converted from manual |
| Relations | converted from manual |
UD scale: manual native — annotated by hand directly in UD; converted from manual — converted from manual annotation in another scheme; converted with corrections — converted and partly corrected by hand; automatic with corrections — automatic, with partial manual corrections; automatic — automatic; not available — the layer is absent.
Size
| Split | Sentences | Tokens | Words | Multiword tokens | Empty nodes |
|---|---|---|---|---|---|
| train | 13 121 | 257 612 | 276 014 | 18 377 | 35 |
| dev | 564 | 11 132 | 11 907 | 775 | 1 |
| test | 482 | 9 680 | 10 417 | 736 | 1 |
| total | 14 167 | 278 424 | 298 338 | 19 888 | 37 |
Tokens are surface tokens (Spanish vámonos is one), words are syntactic words (vamos + nos); multiword tokens are those split into several words; empty nodes are the N.M nodes of the enhanced graph.
Summary
The Italian corpus annotated according to the UD annotation scheme was obtained by conversion from ISDT (Italian Stanford Dependency Treebank), released for the dependency parsing shared task of Evalita-2014 (Bosco et al. 2014).
Introduction
ISDT is a resource annotated according to the Stanford dependencies scheme (de Marneffe et al. 2008, 2013a, 2013b, 2014), obtained through a semi-automatic conversion process starting from MIDT (the Merged Italian Dependency Treebank). MIDT, in turn, is the result of a previous effort in the direction of improving interoperability of data sets available for Italian by harmonizing and merging two existing dependency–based resources, differing both in corpus composition and adopted annotation schemes, namely:
- TUT, the Turin University Treebank (Bosco et al. 2000);
- ISST-TANL, first released as ISST-CoNLL for the CoNLL-2007 shared task (Montemagni, Simi 2007), which was developed as a joint effort by the Istituto di Linguistica Computazionale (ILC–CNR) and the University of Pisa and originating from the Italian Syntactic–Semantic Treebank (ISST, Montemagni et al. 2003).
The details of the harmonization and conversion process leading to MIDT are discussed in (Bosco, Montemagni, Simi, 2012). The Stanford annotation scheme, obtained from an enriched version of MIDT, was adapted to the specificity of the Italian language. We refer to (Bosco, Montemagni, Simi, 2013 and 2014) for a discussion.
This page in Markdown → https://md.mova.elamur.ai/free/en/docs/treebanks/it/isdt/