講演抄録/キーワード |
講演名 |
2016-07-24 13:45
Computational modeling of hierarchical morphological structures ○Yohei Oseki・Alec Marantz(NYU) TL2016-24 |
抄録 |
(和) |
Chomsky (1956, 1957) famously showed that sentences are organized as hierarchical structures, not linear strings, of words, concluding that syntax is (at least) "Context-Free Grammar (CFG)", not "Finite-State Grammar (FSG)". However, the question whether words are hierarchical structures of morphemes is controversial. In fact, not only has psycholinguistics, sentence processing in particular, assumed that words are axiomatic units, but also computational linguistics has claimed that morphology is FSG (Karttunen, 1983; Beesley & Karttunen, 2003; Roark & Sproat, 2007). In this paper, taking theoretical linguistics seriously, especially anti-lexicalist theories such as Distributed Morphology (Halle & Marantz, 1993) that morphemes are axiomatic units, we design the computational simulation experiment and ask whether morphology is CFG or FSG. The results of computational simulation strongly indicate that words are organized as hierarchical structures of morphemes and thus morphology is CFG (O'Donnel, 2011). |
(英) |
Chomsky (1956, 1957) famously showed that sentences are organized as hierarchical structures, not linear strings, of words, concluding that syntax is (at least) "Context-Free Grammar (CFG)", not "Finite-State Grammar (FSG)". However, the question whether words are hierarchical structures of morphemes is controversial. In fact, not only has psycholinguistics, sentence processing in particular, assumed that words are axiomatic units, but also computational linguistics has claimed that morphology is FSG (Karttunen, 1983; Beesley & Karttunen, 2003; Roark & Sproat, 2007). In this paper, taking theoretical linguistics seriously, especially anti-lexicalist theories such as Distributed Morphology (Halle & Marantz, 1993) that morphemes are axiomatic units, we design the computational simulation experiment and ask whether morphology is CFG or FSG. The results of computational simulation strongly indicate that words are organized as hierarchical structures of morphemes and thus morphology is CFG (O'Donnel, 2011). |
キーワード |
(和) |
Morphology / Hierarchical structures / Computational modeling / Probabilistic Context-Free Grammar / n-gram / / / |
(英) |
Morphology / Hierarchical structures / Computational modeling / Probabilistic Context-Free Grammar / n-gram / / / |
文献情報 |
信学技報, vol. 116, no. 159, TL2016-24, pp. 65-69, 2016年7月. |
資料番号 |
TL2016-24 |
発行日 |
2016-07-16 (TL) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
TL2016-24 |
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