서브메뉴
검색
Learning Hidden Structure: Derived Environment Effects and the Richness of the Base
Learning Hidden Structure: Derived Environment Effects and the Richness of the Base
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211151045
- ISBN
- 9798381968682
- DDC
- 401
- 저자명
- Tan, Adeline R.
- 서명/저자
- Learning Hidden Structure: Derived Environment Effects and the Richness of the Base
- 발행사항
- [Sl] : University of California, Los Angeles, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 244 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 85-09, Section: A.
- 주기사항
- Advisor: Zuraw, Kie Ross.
- 학위논문주기
- Thesis (Ph.D.)--University of California, Los Angeles, 2024.
- 초록/해제
- 요약Hidden structure refers to the units of organization that a child cannot directly observe when they are learning language (e.g. phonemes, morpheme boundaries, URs, phrases). In this dissertation, I propose a novel computational model that learns hidden structures in-tandem with the grammar. My model consists of two Maximum Entropy sub-models that are chained via the product rule. Since I treat the hidden structure as a latent variable, the learner is free to match the observed surface pattern via different intermediary URs. Latent variable models have no guarantee of concavity, so I develop a novel sampling technique to simulate a population of language learners.When presented with the same surface information, different human learners may arrive at different analyses (i.e. inter-speaker variation in analyses). In a production task with the -ity suffix and nonce stems, Pierrehumbert (2006) found that 2 in 10 participants never applied velar softening. This suggests that approximately 20% of learners may not learn the grammar for velar softening, but may instead memorize full underlying forms (e.g. /ɪlɛktɹɪsɪti/) for existing words. For velar softening, my model not only correctly predicts that there are multiple solutions for one surface pattern, it also correctly predicts the proportion of human speakers that will pick each solution.In the Rich Base problem, there are two grammars that satisfy one surface pattern. However, humans only acquire one grammar - the Rich Base Grammar (as evidenced by loan word adaptation). In my simulated population of language learners, I find an overwhelming preference for the Rich Base Grammar to be learned. This preference emerges from my model's ability to leverage the superior utility of the Rich Base Grammar over its non-Rich Base counterpart (without needing to build in any extra mechanisms or biases).English CiV lengthening appears at first blush to be a derived environment effect, whose triggering condition - the derived environment - cannot be directly observed. My experiments confirm the productivity of CiV lengthening. I reanalyze CiV lengthening as the emergence of the unmarked Stress-to-Weight Principle, thus simplifying CiV Lengthening from a complex hidden structure problem to a surface true phenomenon.
- 일반주제명
- Linguistics
- 일반주제명
- Language
- 일반주제명
- Sociolinguistics
- 키워드
- Hidden structure
- 키워드
- Maximum entropy
- 키워드
- Phonology
- 기타저자
- University of California, Los Angeles Linguistics 0510
- 기본자료저록
- Dissertations Abstracts International. 85-09A.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008250123s2024 us c eng d■001000017160587
■00520250211151045
■006m o d
■007cr#unu||||||||
■020 ▼a9798381968682
■035 ▼a(MiAaPQ)AAI31140695
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a401
■1001 ▼aTan, Adeline R.
■24510▼aLearning Hidden Structure: Derived Environment Effects and the Richness of the Base
■260 ▼a[Sl]▼bUniversity of California, Los Angeles▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a244 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 85-09, Section: A.
■500 ▼aAdvisor: Zuraw, Kie Ross.
■5021 ▼aThesis (Ph.D.)--University of California, Los Angeles, 2024.
■520 ▼aHidden structure refers to the units of organization that a child cannot directly observe when they are learning language (e.g. phonemes, morpheme boundaries, URs, phrases). In this dissertation, I propose a novel computational model that learns hidden structures in-tandem with the grammar. My model consists of two Maximum Entropy sub-models that are chained via the product rule. Since I treat the hidden structure as a latent variable, the learner is free to match the observed surface pattern via different intermediary URs. Latent variable models have no guarantee of concavity, so I develop a novel sampling technique to simulate a population of language learners.When presented with the same surface information, different human learners may arrive at different analyses (i.e. inter-speaker variation in analyses). In a production task with the -ity suffix and nonce stems, Pierrehumbert (2006) found that 2 in 10 participants never applied velar softening. This suggests that approximately 20% of learners may not learn the grammar for velar softening, but may instead memorize full underlying forms (e.g. /ɪlɛktɹɪsɪti/) for existing words. For velar softening, my model not only correctly predicts that there are multiple solutions for one surface pattern, it also correctly predicts the proportion of human speakers that will pick each solution.In the Rich Base problem, there are two grammars that satisfy one surface pattern. However, humans only acquire one grammar - the Rich Base Grammar (as evidenced by loan word adaptation). In my simulated population of language learners, I find an overwhelming preference for the Rich Base Grammar to be learned. This preference emerges from my model's ability to leverage the superior utility of the Rich Base Grammar over its non-Rich Base counterpart (without needing to build in any extra mechanisms or biases).English CiV lengthening appears at first blush to be a derived environment effect, whose triggering condition - the derived environment - cannot be directly observed. My experiments confirm the productivity of CiV lengthening. I reanalyze CiV lengthening as the emergence of the unmarked Stress-to-Weight Principle, thus simplifying CiV Lengthening from a complex hidden structure problem to a surface true phenomenon.
■590 ▼aSchool code: 0031.
■650 4▼aLinguistics
■650 4▼aLanguage
■650 4▼aSociolinguistics
■653 ▼aEmergence of the unmarked
■653 ▼aHidden structure
■653 ▼aMaximum entropy
■653 ▼aPhonology
■653 ▼aUnderlying representation
■690 ▼a0290
■690 ▼a0679
■690 ▼a0636
■71020▼aUniversity of California, Los Angeles▼bLinguistics 0510.
■7730 ▼tDissertations Abstracts International▼g85-09A.
■790 ▼a0031
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17160587▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


