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Essays in Econometrics: Group Heterogeneity and Misspecification
Essays in Econometrics: Group Heterogeneity and Misspecification
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202103013
- ISBN
- 9798280756205
- DDC
- 310
- 서명/저자
- Essays in Econometrics: Group Heterogeneity and Misspecification
- 발행사항
- [Sl] : University of Pennsylvania, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 235 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-12, Section: B.
- 주기사항
- Advisor: Cheng, Xu;Schorfheide, Frank.
- 학위논문주기
- Thesis (Ph.D.)--University of Pennsylvania, 2025.
- 초록/해제
- 요약Heterogeneity is pervasive in social sciences and manifests in many forms across economic agents and over time. Examples include preferences for products, effects of governmental policies, capital and labor decisions by firms, investment strategies by financial agents, and a large etcetera. Economic and statistical models are by construction a stylized version of reality and group heterogeneity, if not properly accounted for, can lead to model misspecification. An important question is then whether such misspecification transmits to the economic predictions derived from those models, and what are the implications thereof. A related question is how much heterogeneity can be provably captured.This dissertation studies these two related problems-heterogeneity and misspecification-from an econometric perspective in three independent chapters. Chapter 1 treats both problems together by studying a model which allows for time-varying group-specific unobserved heterogeneity, but is misspecified such that the latent group structure cannot be accurately recovered. I show how auxiliary data can help mitigate misspecification and consistently recover time-varying group heterogeneity in an optimal way. To that end, I propose the Covariate-Assisted Shrinkage estimator, derive several analytical properties, and study its performance through simulation experiments and one empirical application.Chapters 2 and 3 zoom in on each of the aforementioned problems individually. Chapter 2 studies how much heterogeneity can be allowed while still able to guarantee valid statistical inference. The framework assumes that statistical dependence stems from links in an underlying network. The strength of dependence is left unrestricted, and conditions are given based on the network topology. Chapter 3 investigates how we should adapt our decisions in the (potential) presence of model misspecification. The starting point is a dynamically misspecified model that is used for forecasting and impulse response estimation. The results show that the consequences of model misspecification are meaningful, and using misspecification-robust methods like the proposed PC and IRFC selection criteria proves crucial.
- 일반주제명
- Statistics
- 키워드
- Econometrics
- 키워드
- Heterogeneity
- 키워드
- Misspecification
- 기타저자
- University of Pennsylvania Economics
- 기본자료저록
- Dissertations Abstracts International. 86-12B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798280756205
■035 ▼a(MiAaPQ)AAI31842934
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a310
■1001 ▼aGonzalez Casasus, Oriol.
■24510▼aEssays in Econometrics: Group Heterogeneity and Misspecification
■260 ▼a[Sl]▼bUniversity of Pennsylvania▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a235 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-12, Section: B.
■500 ▼aAdvisor: Cheng, Xu;Schorfheide, Frank.
■5021 ▼aThesis (Ph.D.)--University of Pennsylvania, 2025.
■520 ▼aHeterogeneity is pervasive in social sciences and manifests in many forms across economic agents and over time. Examples include preferences for products, effects of governmental policies, capital and labor decisions by firms, investment strategies by financial agents, and a large etcetera. Economic and statistical models are by construction a stylized version of reality and group heterogeneity, if not properly accounted for, can lead to model misspecification. An important question is then whether such misspecification transmits to the economic predictions derived from those models, and what are the implications thereof. A related question is how much heterogeneity can be provably captured.This dissertation studies these two related problems-heterogeneity and misspecification-from an econometric perspective in three independent chapters. Chapter 1 treats both problems together by studying a model which allows for time-varying group-specific unobserved heterogeneity, but is misspecified such that the latent group structure cannot be accurately recovered. I show how auxiliary data can help mitigate misspecification and consistently recover time-varying group heterogeneity in an optimal way. To that end, I propose the Covariate-Assisted Shrinkage estimator, derive several analytical properties, and study its performance through simulation experiments and one empirical application.Chapters 2 and 3 zoom in on each of the aforementioned problems individually. Chapter 2 studies how much heterogeneity can be allowed while still able to guarantee valid statistical inference. The framework assumes that statistical dependence stems from links in an underlying network. The strength of dependence is left unrestricted, and conditions are given based on the network topology. Chapter 3 investigates how we should adapt our decisions in the (potential) presence of model misspecification. The starting point is a dynamically misspecified model that is used for forecasting and impulse response estimation. The results show that the consequences of model misspecification are meaningful, and using misspecification-robust methods like the proposed PC and IRFC selection criteria proves crucial.
■590 ▼aSchool code: 0175.
■650 4▼aStatistics
■653 ▼aEconometrics
■653 ▼aHeterogeneity
■653 ▼aMisspecification
■653 ▼aInvestment strategies
■690 ▼a0501
■690 ▼a0511
■690 ▼a0601
■690 ▼a0463
■71020▼aUniversity of Pennsylvania▼bEconomics.
■7730 ▼tDissertations Abstracts International▼g86-12B.
■790 ▼a0175
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17356666▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


