A brief introduction to the Kaede treebank (楓)

Kaede treebank is a Japanese constituent treebank, which has clause level annotations with syntactic function labels, e.g., syntactic role and clause type, and coordinated construction. The treebank is designed to have complete binary trees, and is currently composed of about 10,000 sentences from the Kyoto University Text Corpus (the Mainichi Shimbun Newspaper).

Due to the copyright issue, this repository provides only annotations, and does not include original raw text data. In order to obtain a treebank with original raw texts, follow this procedure.

Buy Mainichi Shimbun News Data （毎日新聞記事データ集）. You can purchase the data from Nichigai Associates.
Run auto_conv (specify the directory of the Mainichi Shimbun News Data as a command-line argument).

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Tags

Part-of-speech tags (terminal symbols)

symbol	definition
NN	Noun
NNP	Proper noun
NPR	Pronoun
NV	Verbal noun
VB	Verb
ADJ	Adjective
ADNOM	Adnominal adjective
ADV	Adverb
AUX	Auxiliary verb
CONJ	Conjunction
NADJ	Nominal adjective
NADV	Nominal adverb
NNF	Formal noun
NNFV	Formal noun (adverbial)
NUM	Numeral
CL	Classifier
NV	Verbal noun
PX	Prefix
SX	Suffix
SXNADJ	Suffix (nominal adjective)
PCS	Case particle
PADN	Adnominal particle
PBD	Binding particle
PCO	Parallel particle
PCJ	Conjunctive particle
PEND	Sentence-ending particle
P	Particle (others)
PNC	Punctuation
PAR	Parenthesis
SYM	Symbol
INTJ	Interjection
FIL	Filler

Compound word tags (non-terminal symbols)

symbol	definition
AUXCOMP	Compound auxiliary verb
CLCOMP	Compound classifier
NUMCOMP	Compound numeral
PCOMP	Compound particle
PCOMPADN	Compound particle (adnominal)
PCOMPADV	Compound particle (adverbial)
SYMCOMP	Compound symbol

Phrase tags (non-terminal symbols)

symbol	definition
NP	Noun phrase
VP	Verb phrase
VCP	Nominal predicate phrase (w/ copula)
VNP	Nominal predicate phrase (w/o copula)
VQP	Verb phrase (indirect question)
ADJP	Adjective phrase
NADJP	Nominal adjective phrase
ADVP	Adverbial phrase
PP	Postposition phrase
CONJP	Conjunction phrase
INTJP	Interjection phrase
FILP	Filler phrase
IP	Inflectional phrase
IP-MAT	Matrix phrase
IP-ADV	Adverbial phrase
IP-REL	Relative clause
IP-REL_sbj	Relative clause (subject gap)
IP-REL_obj	Relative clause (object gap)
IP-REL_ob2	Relative clause (indirect object gap)
IP-ADN	Adnominal clause (non-gap)
CP	Complementizer phrase
CP-THT	Quotation clause
CP-NNF	Nominalized clause
CP-QUE	Interrogative clause

Function tags

symbol	definition
-SBJ	Subjective case
-OBJ	Objective case
-OB2	Indirect object case
-TMP	Temporal case
-LOC	Locative case
-COORD	Coordinated structure
-ZPRED-COORD	Coordinated structure with ellipsis of predicate
-APPOS	Apposition
-QUE	Question
-ADV	Adverbial modification
-ADNOM	Adnominal modification
-MSR	Measure expression
-FRAG	Fragment

Developers

Takaaki Tanaka (NTT)
Masaaki Nagata (NTT)
Takuya Matsuzaki (Nagoya Univ.)
Yusuke Miyao (NII)
Sumire Uematsu (NII)

Publications

田中貴秋, 永田昌明, 松崎拓也, 宮尾祐介, 植松すみれ: 統語情報と意味情報を統合した日本語句構造ツリーバンクの構築. 言語処理学会第20回年次大会予稿集, pp.737–740 (2014).
Takaaki Tanaka and Masaaki Nagata.: Constructing a Practical Constituent Parser from a Japanese Treebank with Function Labels. In Proceedings of 4th Workshop on Statistical Parsing of Morphologically-Rich Languages (SPMRL 2013), pp.108-118 (2013).
Sumire Uematsu, Takuya Matsuzaki, Hiroaki Hanaoka, Yusuke Miyao, and Hideki Mima.: Integrating Multiple Dependency Corpora for Inducing Wide Coverage Japanese CCG Resources. In Proceedings of the 51st Annual Meeting of the Association for Computational Linguistics (ACL 2013), pp. 1042-1051 (2013).

mynlp/kaede