TY - GEN
T1 - Japanese semantic role labeling with hierarchical tag context trees
AU - Ishihara, Yasuhiro
AU - Takeuchi, Koichi
PY - 2016
Y1 - 2016
N2 - In this paper we describe that the hierarchical tag context tree (HTCT) approach improves the accuracy of semantic role labeling on Japanese text. In Japanese language there are functional multiword expressions such as no-tame-ni and yotte that have potential to designate semantic relations between a predicate and its arguments. Since these expressions come to the end part of each argument, the performance of the CRF-based semantic role labeler can be improved by taking into account the last morphemes of each argument as features. We apply our proposed system to the annotated corpus of semantic role labels on a balanced Japanese corpus. The experimental results show that the CRFbased labeler with features extracted by HTCT approach outperforms the normal CRF-based labeler.
AB - In this paper we describe that the hierarchical tag context tree (HTCT) approach improves the accuracy of semantic role labeling on Japanese text. In Japanese language there are functional multiword expressions such as no-tame-ni and yotte that have potential to designate semantic relations between a predicate and its arguments. Since these expressions come to the end part of each argument, the performance of the CRF-based semantic role labeler can be improved by taking into account the last morphemes of each argument as features. We apply our proposed system to the annotated corpus of semantic role labels on a balanced Japanese corpus. The experimental results show that the CRFbased labeler with features extracted by HTCT approach outperforms the normal CRF-based labeler.
KW - CRFs
KW - Hierarchical tag context trees
KW - Semantic role labeling
UR - http://www.scopus.com/inward/record.url?scp=84961194105&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84961194105&partnerID=8YFLogxK
U2 - 10.1007/978-981-10-0515-2_2
DO - 10.1007/978-981-10-0515-2_2
M3 - Conference contribution
AN - SCOPUS:84961194105
SN - 9789811005145
VL - 593
T3 - Communications in Computer and Information Science
SP - 21
EP - 32
BT - Communications in Computer and Information Science
PB - Springer Verlag
T2 - 14th International Conference of the Pacific Association for Computaitonal Linguistics, PACLING 2015
Y2 - 19 May 2015 through 21 May 2015
ER -