Since version 2.12 (May 2023), this treebank is maintained in SUD in the SUD_French-Sequoia github repository. It was converted from the data available in the Deep-Sequoia, with the rewriting system DSQtoSUD.
A UD version is available in UD released data or on UD_French-Sequoia.
The first version of the Sequoia Corpus was presented in (Candito & Seddah, 2012).
The whole corpus contains 70,546 tokens in 3,099 sentences.
The original sentences of the corpus are taken from:
- French Europarl
Europar.550.conllu(561 sentences, 15,732 tokens)
- Wikipédia Fr
frwiki_50.1000.conllu(996 sentences, 23,127 tokens)
- Newspaper Est Républicain
annodis.er.conllu(524 sentences, 11,723 tokens)
- European Medicines Agency
emea-fr-dev.conllu(574 sentences, 9,722 tokens)emea-fr-test.conllu(444 sentences, 10,242 tokens)
In UD_French-Sequoia, data were randomly split into:
fr_sequoia-ud-test.conllu: 10,044 tokens in 456 sentencesfr_sequoia-ud-dev.conllu: 9,999 tokens in 412 sentencesfr_sequoia-ud-train.conllu: 50,503 tokens in 2,231 sentences
The conversion has been performed by with the Graph Rewriting System described here developed by Guy Perrier.
The Sequoia Corpus was presented in (Candito & Seddah, 2012) and revised later, notably during the project of deep annotation described in (Candito & al. 2014) and (Perrier & al. 2014).
(Candito & Seddah, 2012) Marie Candito, Djamé Seddah. Le corpus Sequoia : annotation syntaxique et exploitation pour l'adaptation d'analyseur par pont lexical. TALN 2012 - 19e conférence sur le Traitement Automatique des Langues Naturelles, Jun 2012, Grenoble, France. 2012.
(Candito & al. 2014) Marie Candito, Guy Perrier, Bruno Guillaume, Corentin Ribeyre, Karën Fort, Djamé Seddah and Éric de la Clergerie. (2014) Deep Syntax Annotation of the Sequoia French Treebank. Proc. of LREC 2014, Reykjavík, Iceland.
(Perrier & al. 2014) Guy Perrier, Marie Candito, Bruno Guillaume, Corentin Ribeyre, Karën Fort and Djamé Seddah. (2014) Un schéma d'annotation en dépendances syntaxiques profondes pour le français. Proc. of TALN 2014, Marseille, France.
(Bonfante & al. 2018) Guillaume Bonfante, Bruno Guillaume, Guy Perrier. Application of Graph Rewriting to Natural Language Processing. ISTE Wiley, 1, pp.272, 2018, Logic, Linguistics and Computer Science Set.
- 2023-05-15 v2.12
- The treebank is now maintained in SUD and converted to UD. See https://github.com/surfacesyntacticud/SUD_French-Sequoia
In the older releases, the process was different (conversion to UD first and from UD to SUD in a second time). For changelog of earlier versions, see UD Changelog