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Three Essays in Applied Statistics and Methodology
Three Essays in Applied Statistics and Methodology
Three Essays in Applied Statistics and Methodology

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20250211152757
ISBN  
9798346568308
DDC  
310
저자명  
Ruan, Lisa L.
서명/저자  
Three Essays in Applied Statistics and Methodology
발행사항  
[Sl] : Harvard University, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
138 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-05, Section: B.
주기사항  
Advisor: Shephard, Neil.
학위논문주기  
Thesis (Ph.D.)--Harvard University, 2024.
초록/해제  
요약In the increasingly complex data landscape of the modern world, the growing diversity of data has opened up exciting new avenues of research. This thesis presents three forays into areas representing different challenges in the realms of time series, text, and image data across an array of applications. • Chapter 1 proposes a Bayesian algorithm for learning about the memory distribution of a superposition of autoregressions. The parameterization of this model structure is delicate and experiments suggest a solution which can be deployed in practice. The methods are illustrated by an analysis of U.S. inflation data.• Chapter 2 examines the integration of text and traditional covariates into a heterogenous dataset within the Concise Comparative Summaries framework. We address key methodological challenges, including optimization strategies, penalization, handling missing data, and reconciling scaling differences. We further compare our integrated approach with text-only and covariate-only analyses, and illustrate its effectiveness through a comprehensive analysis of a heterogeneous medical dataset focused on frequent users of intensive care units.• Chapter 3 leverages machine learning methodology on a dataset of over 200,000 pottery fragment images from the Sanxingdui Bronze culture to achieve precise chronological classification and uncover an anomalous excavation site. This work highlights the untapped potential of applying modern data-driven methods to traditional archaeological practices in demonstrating the value of previously overlooked pottery fragments in archaeological research.
일반주제명  
Statistics
일반주제명  
Computer science
일반주제명  
Information technology
키워드  
Bayesian algorithm
키워드  
U.S. inflation data
키워드  
Autoregressions
키워드  
Penalization
키워드  
Machine learning
기타저자  
Harvard University Statistics
기본자료저록  
Dissertations Abstracts International. 86-05B.
전자적 위치 및 접속  
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MARC

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■1001  ▼aRuan,  Lisa  L.▼0(orcid)0009-0007-2494-2130
■24510▼aThree  Essays  in  Applied  Statistics  and  Methodology
■260    ▼a[Sl]▼bHarvard  University▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a138  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-05,  Section:  B.
■500    ▼aAdvisor:  Shephard,  Neil.
■5021  ▼aThesis  (Ph.D.)--Harvard  University,  2024.
■520    ▼aIn  the  increasingly  complex  data  landscape  of  the  modern  world,  the  growing  diversity  of  data  has  opened  up  exciting  new  avenues  of  research.  This  thesis  presents  three  forays  into  areas  representing  different  challenges  in  the  realms  of  time  series,  text,  and  image  data  across  an  array  of  applications. •  Chapter  1  proposes  a  Bayesian  algorithm  for  learning  about  the  memory  distribution  of  a  superposition  of  autoregressions.  The  parameterization  of  this  model  structure  is  delicate  and  experiments  suggest  a  solution  which  can  be  deployed  in  practice.  The  methods  are  illustrated  by  an  analysis  of  U.S.  inflation  data.•  Chapter  2  examines  the  integration  of  text  and  traditional  covariates  into  a  heterogenous  dataset  within  the  Concise  Comparative  Summaries  framework.  We  address  key  methodological  challenges,  including  optimization  strategies,  penalization,  handling  missing  data,  and  reconciling  scaling  differences.  We  further  compare  our  integrated  approach  with  text-only  and  covariate-only  analyses,  and  illustrate  its  effectiveness  through  a  comprehensive  analysis  of  a  heterogeneous  medical  dataset  focused  on  frequent  users  of  intensive  care  units.•  Chapter  3  leverages  machine  learning  methodology  on  a  dataset  of  over  200,000  pottery  fragment  images  from  the  Sanxingdui  Bronze  culture  to  achieve  precise  chronological  classification  and  uncover  an  anomalous  excavation  site.  This  work  highlights  the  untapped  potential  of  applying  modern  data-driven  methods  to  traditional  archaeological  practices  in  demonstrating  the  value  of  previously  overlooked  pottery  fragments  in  archaeological  research.
■590    ▼aSchool  code:  0084.
■650  4▼aStatistics
■650  4▼aComputer  science
■650  4▼aInformation  technology
■653    ▼aBayesian  algorithm
■653    ▼aU.S.  inflation  data
■653    ▼aAutoregressions
■653    ▼aPenalization
■653    ▼aMachine  learning
■690    ▼a0463
■690    ▼a0489
■690    ▼a0984
■690    ▼a0800
■71020▼aHarvard  University▼bStatistics.
■7730  ▼tDissertations  Abstracts  International▼g86-05B.
■790    ▼a0084
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17163817▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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