@article{weko_183817_1, author = "Hidetaka,Kamigaito and Taro,Watanabe and Hiroya,Takamura and Manabu,Okumura and Eiichiro,Sumita", title = "Hierarchical Back-off Modeling of Hiero Grammar based on Non-parametric Bayesian Model", journal = "情報処理学会論文誌", year = "2017", volume = "58", number = "10", month = "oct" }