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Novel Experimental Design Techniques for Data Science
Novel Experimental Design Techniques for Data Science
Novel Experimental Design Techniques for Data Science

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자료유형  
 학위논문 서양
최종처리일시  
20260202105521
ISBN  
9798263341213
DDC  
600
저자명  
Huang, Chaofan.
서명/저자  
Novel Experimental Design Techniques for Data Science
발행사항  
[Sl] : Georgia Institute of Technology, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
215 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
주기사항  
Advisor: Joseph, Roshan V.
학위논문주기  
Thesis (Ph.D.)--Georgia Institute of Technology, 2024.
초록/해제  
요약Experimental design [1, 2, 3] is a fundamental area of statistics, with many fascinating techniques developed in recent years. Many of these methodologies possess broader applications beyond experimental design-related problems but are not yet explored. This thesis presents novel applications of experimental design techniques for data science problems, with a focus on sampling, optimization, and machine learning.Chapter 1 and Chapter 2 integrate principles from optimal space-filling design into the weighted resampling methods, an integral part of sequential sampling, survey sampling, etc. The most straightforward approach is to draw sample independently with replacement according to their weights. However, this may result in clustered resamples that provide duplicated information and fail to cover certain regions of the sample space. Chapter 1 introduces a novel deterministic weighted sampling scheme known as the Importance Support Points (ISP) resampling. ISP resampling selects optimal resamples that not only best represent the weighted samples in terms of energy distance but also ensures space-fillingness. We incorporate ISP resampling into sequential sampling methods, and demonstrate its empirical improvement over the existing weighted resampling techniques. However, the quadratic complexity of ISP computation restricts its practicality in large data settings. To address this shortcoming, Chapter 2 presents Weighted Twinning, a nearest-neighbor based heuristic algorithm that is orders of magnitude faster for computing ISP, making it applicable to a broader class of problems.Chapter 3 explores another deterministic resampling method based on the minimum energy design (MinED). MinED resampling also aims to find the set of space-filling resamples that are representative for the target distribution. The effectiveness of MinED resampling is illustrated by its integration with sequential sampling for constructing spacefilling design in highly constrained regions. Extensive simulation results are provided to demonstrate the improved performance over existing state-of-the-art techniques.Chapter 4 presents a novel sequential design technique for efficiently calibrating (optimizing) the parameters of a functional output model. The proposed algorithm improves over the standard Bayesian optimization by (i) utilizing the generalized chi-square distribution as a more appropriate predictive distribution for the squared distance objective function in the calibration problems, and (ii) applying functional principal component analysis to reduce the dimensionality of the functional response data, which allows for efficient approximation of the predictive distribution and subsequent computation of the expected improvement acquisition function.Finally, Chapter 5 applies the variance-based global sensitivity analysis for factor importance computation, one of the fundamental problems in statistics and machine learning. Many existing works focus on the model-based importance, but an important feature in one learning algorithm may hold little significance in another learning algorithm. Hence, a factor importance measure ought to characterize the feature's predictive potential without relying on a specific prediction algorithm. To bypass the modeling step, the equivalence between predictive potential and total Sobol' indices is drawn, and a consistent estimator using only the noisy data is proposed. Integrating with forward selection and backward elimination gives rise to a novel algorithm for factor importance ranking and selection. The effectiveness of the algorithm is demonstrated in simulations and real world examples.
일반주제명  
Friction
일반주제명  
Inverse problems
일반주제명  
Normal distribution
일반주제명  
Data science
일반주제명  
Energy
일반주제명  
Design techniques
일반주제명  
Mathematics
기타저자  
Georgia Institute of Technology.
기본자료저록  
Dissertations Abstracts International. 87-05B.
전자적 위치 및 접속  
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MARC

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■0820  ▼a600
■1001  ▼aHuang,  Chaofan.
■24510▼aNovel  Experimental  Design  Techniques  for  Data  Science
■260    ▼a[Sl]▼bGeorgia  Institute  of  Technology▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a215  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-05,  Section:  B.
■500    ▼aAdvisor:  Joseph,  Roshan  V.
■5021  ▼aThesis  (Ph.D.)--Georgia  Institute  of  Technology,  2024.
■520    ▼aExperimental  design  [1,  2,  3]  is  a  fundamental  area  of  statistics,  with  many  fascinating  techniques  developed  in  recent  years.  Many  of  these  methodologies  possess  broader  applications  beyond  experimental  design-related  problems  but  are  not  yet  explored.  This  thesis  presents  novel  applications  of  experimental  design  techniques  for  data  science  problems,  with  a  focus  on  sampling,  optimization,  and  machine  learning.Chapter  1  and  Chapter  2  integrate  principles  from  optimal  space-filling  design  into  the  weighted  resampling  methods,  an  integral  part  of  sequential  sampling,  survey  sampling,  etc.  The  most  straightforward  approach  is  to  draw  sample  independently  with  replacement  according  to  their  weights.  However,  this  may  result  in  clustered  resamples  that  provide  duplicated  information  and  fail  to  cover  certain  regions  of  the  sample  space.  Chapter  1  introduces  a  novel  deterministic  weighted  sampling  scheme  known  as  the  Importance  Support  Points  (ISP)  resampling.  ISP  resampling  selects  optimal  resamples  that  not  only  best  represent  the  weighted  samples  in  terms  of  energy  distance  but  also  ensures  space-fillingness.  We  incorporate  ISP  resampling  into  sequential  sampling  methods,  and  demonstrate  its  empirical  improvement  over  the  existing  weighted  resampling  techniques.  However,  the  quadratic  complexity  of  ISP  computation  restricts  its  practicality  in  large  data  settings.  To  address  this  shortcoming,  Chapter  2  presents  Weighted  Twinning,  a  nearest-neighbor  based  heuristic  algorithm  that  is  orders  of  magnitude  faster  for  computing  ISP,  making  it  applicable  to  a  broader  class  of  problems.Chapter  3  explores  another  deterministic  resampling  method  based  on  the  minimum  energy  design  (MinED).  MinED  resampling  also  aims  to  find  the  set  of  space-filling  resamples  that  are  representative  for  the  target  distribution.  The  effectiveness  of  MinED  resampling  is  illustrated  by  its  integration  with  sequential  sampling  for  constructing  spacefilling  design  in  highly  constrained  regions.  Extensive  simulation  results  are  provided  to  demonstrate  the  improved  performance  over  existing  state-of-the-art  techniques.Chapter  4  presents  a  novel  sequential  design  technique  for  efficiently  calibrating  (optimizing)  the  parameters  of  a  functional  output  model.  The  proposed  algorithm  improves  over  the  standard  Bayesian  optimization  by  (i)  utilizing  the  generalized  chi-square  distribution  as  a  more  appropriate  predictive  distribution  for  the  squared  distance  objective  function  in  the  calibration  problems,  and  (ii)  applying  functional  principal  component  analysis  to  reduce  the  dimensionality  of  the  functional  response  data,  which  allows  for  efficient  approximation  of  the  predictive  distribution  and  subsequent  computation  of  the  expected  improvement  acquisition  function.Finally,  Chapter  5  applies  the  variance-based  global  sensitivity  analysis  for  factor  importance  computation,  one  of  the  fundamental  problems  in  statistics  and  machine  learning.  Many  existing  works  focus  on  the  model-based  importance,  but  an  important  feature  in  one  learning  algorithm  may  hold  little  significance  in  another  learning  algorithm.  Hence,  a  factor  importance  measure  ought  to  characterize  the  feature's  predictive  potential  without  relying  on  a  specific  prediction  algorithm.  To  bypass  the  modeling  step,  the  equivalence  between  predictive  potential  and  total  Sobol'  indices  is  drawn,  and  a  consistent  estimator  using  only  the  noisy  data  is  proposed.  Integrating  with  forward  selection  and  backward  elimination  gives  rise  to  a  novel  algorithm  for  factor  importance  ranking  and  selection.  The  effectiveness  of  the  algorithm  is  demonstrated  in  simulations  and  real  world  examples.
■590    ▼aSchool  code:  0078.
■650  4▼aFriction
■650  4▼aInverse  problems
■650  4▼aNormal  distribution
■650  4▼aData  science
■650  4▼aEnergy
■650  4▼aDesign  techniques
■650  4▼aMathematics
■690    ▼a0791
■690    ▼a0800
■690    ▼a0405
■71020▼aGeorgia  Institute  of  Technology.
■7730  ▼tDissertations  Abstracts  International▼g87-05B.
■790    ▼a0078
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360414▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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