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Advancing Bayesian Forecasting: A Bayesian Dirichlet Auto-Regressive Conditional Heteroskedasticity Model, a Bayesian Dirichlet Auto-Regressive Moving Average Model, and Other Innovations
Advancing Bayesian Forecasting: A Bayesian Dirichlet Auto-Regressive Conditional Heteroske...
Advancing Bayesian Forecasting: A Bayesian Dirichlet Auto-Regressive Conditional Heteroskedasticity Model, a Bayesian Dirichlet Auto-Regressive Moving Average Model, and Other Innovations

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자료유형  
 학위논문 서양
최종처리일시  
20260202103623
ISBN  
9798315790983
DDC  
310
저자명  
Katz, Harrison.
서명/저자  
Advancing Bayesian Forecasting: A Bayesian Dirichlet Auto-Regressive Conditional Heteroskedasticity Model, a Bayesian Dirichlet Auto-Regressive Moving Average Model, and Other Innovations
발행사항  
[Sl] : University of California, Los Angeles, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
183 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-12, Section: A.
주기사항  
Advisor: Weiss, Robert E.;Wu, Ying Nian.
학위논문주기  
Thesis (Ph.D.)--University of California, Los Angeles, 2025.
초록/해제  
요약This dissertation introduces new Bayesian time series models for compositional and high-dimensional data with dynamic structure and potential heteroskedasticity. It comprises four papers that offer methodological advances, simulation results, and applications in hospitality and finance.Paper 1 introduces the Bayesian Dirichlet Auto-Regressive Moving Average (B-DARMA) model, motivated by the need to forecast the proportion of future fees recognized in future monthly intervals using daily Airbnb data. By embedding Auto-Regressive Moving Average (ARMA) components on an additive log-ratio scale within a Dirichlet likelihood, the model enforces compositional constraints and yields reasonable forecasts. Simulation studies highlight B-DARMA's predictive performance, and empirical analysis shows more accurate lead-time predictions compared with standard VARMA-based methods-vector auto-regressive moving average models that jointly capture relationships among multiple time series-thereby guiding resource allocation and strategic planning.Paper 2 extends B-DARMA to a Bayesian Dirichlet Auto-Regressive Conditional Heteroskedasticity (B-DARCH) model by incorporating a Generalized Auto-Regressive Conditional Heteroskedasticity (GARCH)-like process for the Dirichlet precision parameter. Empirical analysis of Airbnb's currency-fee data demonstrates that B-DARCH achieves higher forecast accuracy than both B-DARMA and standard VARMA-based methods. Simulation studies further confirm that modeling time-varying volatility significantly improves predictive coverage relative to simpler B-DARMA or transformed VARMA models.Paper 3 conducts a sensitivity analysis of B-DARMA under several priors-normal, Laplace, horseshoe, spike-and-slab, and hierarchical. Six simulation studies highlight shrinkage as crucial for pruning unneeded parameters while showing that prior choice alone cannot fix model misspecification. An application to S&P 500 sector allocations illustrates how prior-based shrinkage manages complexity in high-dimensional or limited-sample scenarios.Paper 4 examines high-dimensional vector auto-regressive processes, comparing horseshoe, lasso, and hierarchical priors with ridge and nonparametric shrinkage methods in three distinct simulations. In Canadian macroeconomic data, horseshoe priors outperform other approaches by shrinking smaller coefficients while retaining major signals, enhancing forecast accuracy.Collectively, these four papers form a cohesive suite of Bayesian methods for compositional and high-dimensional time series, addressing interpretability, over-parameterization, and volatility. They offer theoretically grounded, empirically tested frameworks for accurate inference, improved risk management, and deeper strategic insights in hospitality, macroeconomics, and finance.
일반주제명  
Statistics
일반주제명  
Finance
키워드  
Bayesian time series models
키워드  
Auto-Regressive Moving Average
키워드  
Nonparametric shrinkage methods
기타저자  
University of California, Los Angeles Statistics 0891
기본자료저록  
Dissertations Abstracts International. 86-12A.
전자적 위치 및 접속  
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MARC

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■1001  ▼aKatz,  Harrison.
■24510▼aAdvancing  Bayesian  Forecasting:  A  Bayesian  Dirichlet  Auto-Regressive  Conditional  Heteroskedasticity  Model,  a  Bayesian  Dirichlet  Auto-Regressive  Moving  Average  Model,  and  Other  Innovations
■260    ▼a[Sl]▼bUniversity  of  California,  Los  Angeles▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a183  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-12,  Section:  A.
■500    ▼aAdvisor:  Weiss,  Robert  E.;Wu,  Ying  Nian.
■5021  ▼aThesis  (Ph.D.)--University  of  California,  Los  Angeles,  2025.
■520    ▼aThis  dissertation  introduces  new  Bayesian  time  series  models  for  compositional  and  high-dimensional  data  with  dynamic  structure  and  potential  heteroskedasticity.  It  comprises  four  papers  that  offer  methodological  advances,  simulation  results,  and  applications  in  hospitality  and  finance.Paper  1  introduces  the  Bayesian  Dirichlet  Auto-Regressive  Moving  Average  (B-DARMA)  model,  motivated  by  the  need  to  forecast  the  proportion  of  future  fees  recognized  in  future  monthly  intervals  using  daily  Airbnb  data.  By  embedding  Auto-Regressive  Moving  Average  (ARMA)  components  on  an  additive  log-ratio  scale  within  a  Dirichlet  likelihood,  the  model  enforces  compositional  constraints  and  yields  reasonable  forecasts.  Simulation  studies  highlight  B-DARMA's  predictive  performance,  and  empirical  analysis  shows  more  accurate  lead-time  predictions  compared  with  standard  VARMA-based  methods-vector  auto-regressive  moving  average  models  that  jointly  capture  relationships  among  multiple  time  series-thereby  guiding  resource  allocation  and  strategic  planning.Paper  2  extends  B-DARMA  to  a  Bayesian  Dirichlet  Auto-Regressive  Conditional  Heteroskedasticity  (B-DARCH)  model  by  incorporating  a  Generalized  Auto-Regressive  Conditional  Heteroskedasticity  (GARCH)-like  process  for  the  Dirichlet  precision  parameter.  Empirical  analysis  of  Airbnb's  currency-fee  data  demonstrates  that  B-DARCH  achieves  higher  forecast  accuracy  than  both  B-DARMA  and  standard  VARMA-based  methods.  Simulation  studies  further  confirm  that  modeling  time-varying  volatility  significantly  improves  predictive  coverage  relative  to  simpler  B-DARMA  or  transformed  VARMA  models.Paper  3  conducts  a  sensitivity  analysis  of  B-DARMA  under  several  priors-normal,  Laplace,  horseshoe,  spike-and-slab,  and  hierarchical.  Six  simulation  studies  highlight  shrinkage  as  crucial  for  pruning  unneeded  parameters  while  showing  that  prior  choice  alone  cannot  fix  model  misspecification.  An  application  to  S&P  500  sector  allocations  illustrates  how  prior-based  shrinkage  manages  complexity  in  high-dimensional  or  limited-sample  scenarios.Paper  4  examines  high-dimensional  vector  auto-regressive  processes,  comparing  horseshoe,  lasso,  and  hierarchical  priors  with  ridge  and  nonparametric  shrinkage  methods  in  three  distinct  simulations.  In  Canadian  macroeconomic  data,  horseshoe  priors  outperform  other  approaches  by  shrinking  smaller  coefficients  while  retaining  major  signals,  enhancing  forecast  accuracy.Collectively,  these  four  papers  form  a  cohesive  suite  of  Bayesian  methods  for  compositional  and  high-dimensional  time  series,  addressing  interpretability,  over-parameterization,  and  volatility.  They  offer  theoretically  grounded,  empirically  tested  frameworks  for  accurate  inference,  improved  risk  management,  and  deeper  strategic  insights  in  hospitality,  macroeconomics,  and  finance.
■590    ▼aSchool  code:  0031.
■650  4▼aStatistics
■650  4▼aFinance
■653    ▼aBayesian  time  series  models
■653    ▼aAuto-Regressive  Moving  Average
■653    ▼aNonparametric  shrinkage  methods
■690    ▼a0463
■690    ▼a0501
■690    ▼a0508
■71020▼aUniversity  of  California,  Los  Angeles▼bStatistics  0891.
■7730  ▼tDissertations  Abstracts  International▼g86-12A.
■790    ▼a0031
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17357958▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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