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Stability of First-Order Methods in Tame Optimization
Stability of First-Order Methods in Tame Optimization
Stability of First-Order Methods in Tame Optimization

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20250211151331
ISBN  
9798382791906
DDC  
519
저자명  
Lai, Lexiao.
서명/저자  
Stability of First-Order Methods in Tame Optimization
발행사항  
[Sl] : Columbia University, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
83 p
주기사항  
Source: Dissertations Abstracts International, Volume: 85-12, Section: B.
주기사항  
Advisor: Josz, Cedric.
학위논문주기  
Thesis (Ph.D.)--Columbia University, 2024.
초록/해제  
요약Modern data science applications demand solving large-scale optimization problems. The prevalent approaches are first-order methods, valued for their scalability. These methods are implemented to tackle highly irregular problems where assumptions of convexity and smoothness are untenable.Seeking to deepen the understanding of these methods, we study first-order methods with constant step size for minimizing locally Lipschitz tame functions. To do so, we propose notions of discrete Lyapunov stability for optimization methods. Concerning common first-order methods, we provide necessary and sufficient conditions for stability. We also show that certain local minima can be unstable, without additional noise in the method. Our analysis relies on the connection between the iterates of the first-order methods and continuous-time dynamics.
일반주제명  
Applied mathematics
일반주제명  
Computer science
키워드  
Data science applications
키워드  
Optimization methods
키워드  
First-order methods
키워드  
Lipschitz tame
기타저자  
Columbia University Operations Research
기본자료저록  
Dissertations Abstracts International. 85-12B.
전자적 위치 및 접속  
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MARC

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■020    ▼a9798382791906
■035    ▼a(MiAaPQ)AAI31241102
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a519
■1001  ▼aLai,  Lexiao.
■24510▼aStability  of  First-Order  Methods  in  Tame  Optimization
■260    ▼a[Sl]▼bColumbia  University▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a83  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  85-12,  Section:  B.
■500    ▼aAdvisor:  Josz,  Cedric.
■5021  ▼aThesis  (Ph.D.)--Columbia  University,  2024.
■520    ▼aModern  data  science  applications  demand  solving  large-scale  optimization  problems.  The  prevalent  approaches  are  first-order  methods,  valued  for  their  scalability.  These  methods  are  implemented  to  tackle  highly  irregular  problems  where  assumptions  of  convexity  and  smoothness  are  untenable.Seeking  to  deepen  the  understanding  of  these  methods,  we  study  first-order  methods  with  constant  step  size  for  minimizing  locally  Lipschitz  tame  functions.  To  do  so,  we  propose  notions  of  discrete  Lyapunov  stability  for  optimization  methods.  Concerning  common  first-order  methods,  we  provide  necessary  and  sufficient  conditions  for  stability.  We  also  show  that  certain  local  minima  can  be  unstable,  without  additional  noise  in  the  method.  Our  analysis  relies  on  the  connection  between  the  iterates  of  the  first-order  methods  and  continuous-time  dynamics.
■590    ▼aSchool  code:  0054.
■650  4▼aApplied  mathematics
■650  4▼aComputer  science
■653    ▼aData  science  applications
■653    ▼aOptimization  methods
■653    ▼aFirst-order  methods
■653    ▼aLipschitz  tame
■690    ▼a0796
■690    ▼a0984
■690    ▼a0364
■71020▼aColumbia  University▼bOperations  Research.
■7730  ▼tDissertations  Abstracts  International▼g85-12B.
■790    ▼a0054
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17161259▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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