Presentation 2016-07-24
Computational modeling of hierarchical morphological structures
Yohei Oseki, Alec Marantz,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) 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).
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Morphology / Hierarchical structures / Computational modeling / Probabilistic Context-Free Grammar / n-gram
Paper # TL2016-24
Date of Issue 2016-07-16 (TL)

Conference Information
Committee TL
Conference Date 2016/7/23(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Waseda Univ. (Nishi-Waseda Campus)
Topics (in Japanese) (See Japanese page)
Topics (in English) Human Language Processing and Learning
Chair Masami Suzuki(KDDI R&D Labs.)
Vice Chair Chiaki Kubomura(Yamano College of Aesthetics)
Secretary Chiaki Kubomura(Ehime Univ.)
Assistant Yasushi Tsubota(Kyoto Univ.) / Nobuyuki Jincho(Waseda Univ.)

Paper Information
Registration To Technical Committee on Thought and Language
Language ENG
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Computational modeling of hierarchical morphological structures
Sub Title (in English)
Keyword(1) Morphology
Keyword(2) Hierarchical structures
Keyword(3) Computational modeling
Keyword(4) Probabilistic Context-Free Grammar
Keyword(5) n-gram
1st Author's Name Yohei Oseki
1st Author's Affiliation New York University(NYU)
2nd Author's Name Alec Marantz
2nd Author's Affiliation New York University(NYU)
Date 2016-07-24
Paper # TL2016-24
Volume (vol) vol.116
Number (no) TL-159
Page pp.pp.65-69(TL),
#Pages 5
Date of Issue 2016-07-16 (TL)