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UD Japanese PUD

Language: Japanese (code: ja)
Family: Japanese

This treebank has been part of Universal Dependencies since the UD v2.1 release.

The following people have contributed to making this treebank part of UD: Mai Omura, Yusuke Miyao, Hiroshi Kanayama, Hiroshi Matsuda, Aya Wakasa, Kayo Yamashita, Masayuki Asahara, Takaaki Tanaka, Yugo Murawaki, Yuji Matsumoto, Kaoru Ito, Taishi Chika, Shinsuke Mori, Sumire Uematsu, Hans Uszkoreit, Vivien Macketanz, Aljoscha Burchardt, Kim Harris, Katrin Marheinecke, Slav Petrov, Tolga Kayadelen, Mohammed Attia, Ali Elkahky, Zhuoran Yu, Emily Pitler, Saran Lertpradit, Atsuko Shimada, Anna Trukhina, Martin Popel, Daniel Zeman.

Repository: UD_Japanese-PUD
Search this treebank on-line: PML-TQ
Download all treebanks: UD 2.15

License: CC BY-SA 3.0

Genre: news, wiki

Questions, comments? General annotation questions (either Japanese-specific or cross-linguistic) can be raised in the main UD issue tracker. You can report bugs in this treebank in the treebank-specific issue tracker on Github. If you want to collaborate, please contact [masayu-a (æt) ninjal • ac • jp]. Development of the treebank happens directly in the UD repository, so you may submit bug fixes as pull requests against the dev branch.

Annotation Source
Lemmas annotated manually in non-UD style, automatically converted to UD
UPOS annotated manually in non-UD style, automatically converted to UD
XPOS annotated manually
Features not available
Relations annotated manually in non-UD style, automatically converted to UD

Description

This is a part of the Parallel Universal Dependencies (PUD) treebanks created for the CoNLL 2017 shared task on Multilingual Parsing from Raw Text to Universal Dependencies.

There are 1000 sentences in each language, always in the same order. (The sentence alignment is 1-1 but occasionally a sentence-level segment actually consists of two real sentences.) The sentences are taken from the news domain (sentence id starts in ‘n’) and from Wikipedia (sentence id starts with ‘w’). There are usually only a few sentences from each document, selected randomly, not necessarily adjacent. The digits on the second and third position in the sentence ids encode the original language of the sentence. The first 750 sentences are originally English (01). The remaining 250 sentences are originally German (02), French (03), Italian (04) or Spanish (05) and they were translated to other languages via English. Translation into German, French, Italian, Spanish, Arabic, Hindi, Chinese, Indonesian, Japanese, Korean, Portuguese, Russian, Thai and Turkish has been provided by DFKI and performed (except for German) by professional translators. Then the data has been annotated morphologically and syntactically by Google according to Google universal annotation guidelines; finally, it has been converted by members of the UD community to UD v2 guidelines.

Additional languages have been provided (both translation and native UD v2 annotation) by other teams: Czech by Charles University, Finnish by University of Turku and Swedish by Uppsala University.

The entire treebank is labeled as test set (and was used for testing in the shared task). If it is used for training in future research, the users should employ ten-fold cross-validation.

In May 2020, we introduced the same coversion method used in UD_Japanese GSD v2.6 for UD_Japanese PUD.

Acknowledgments

Statistics of UD Japanese PUD

POS Tags

ADJ – ADP – ADV – AUX – CCONJ – DET – INTJ – NOUN – NUM – PART – PRON – PROPN – PUNCT – SCONJ – SYM – VERB

Features

Polarity

Relations

acl – advcl – advmod – amod – appos – aux – case – cc – ccomp – compound – cop – csubj – dep – det – discourse – fixed – mark – nmod – nsubj – nsubj:outer – nummod – obj – obl – punct – root

Tokenization and Word Segmentation

Morphology

Tags

Nominal Features

Degree and Polarity

Verbal Features

Pronouns, Determiners, Quantifiers

Other Features

Syntax

Auxiliary Verbs and Copula

Core Arguments, Oblique Arguments and Adjuncts

Here we consider only relations between verbs (parent) and nouns or pronouns (child).

Relations Overview