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Deep Learning of Biomechanical Dynamics with Spatial Variability Mining and Model Sparsifiation
Deep Learning of Biomechanical Dynamics with Spatial Variability Mining and Model Sparsifi...
Deep Learning of Biomechanical Dynamics with Spatial Variability Mining and Model Sparsifiation

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20250211153107
ISBN  
9798346391654
DDC  
612.76
저자명  
Liu, Ming.
서명/저자  
Deep Learning of Biomechanical Dynamics with Spatial Variability Mining and Model Sparsifiation
발행사항  
[Sl] : Purdue University, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
96 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-05, Section: A.
주기사항  
Advisor: Zhang, Qingxue.
학위논문주기  
Thesis (Ph.D.)--Purdue University, 2024.
초록/해제  
요약Deep learning of biomechanical dynamics is of great promise in smart health and data-driven precision medicine. Biomechanical dynamics are related to the movement patterns and gait characteristics of human people and may provide important insights if mined by deep learning models. However, efficient deep learning of biomechanical dynamics is still challenging, considering that there is a high diversity in the dynamics from different body locations, and the deep learning model may need to be lightweight enough to be able to be deployed in real-time.Targeting these challenges, we have firstly conducted studies on the spatial variability of biomechanical dynamics, aiming to evaluate and determine the optimal body location that is of great promise in robust physical activity type detection. Further, we have developed a framework for deep learning pruning, aiming to determine the optimal pruning schemes while maintaining acceptable performance. More specifically, the proposed approach first evaluates the layer importance of the deep learning model, and then leverages the probabilistic distribution-enabled threshold determination to optimize the pruning rate. The weighted random thresholding method is first investigated to further the understanding of the behavior of the pruning action for each layer. Afterwards, the Gaussian-based thresholding is designed to more effectively optimize the pruning strategies, which can find out the fine-grained pruning schemes with both emphasis and diversity regulation.Even further, we have enhanced and boosted the efficient deep learning framework, to co-optimize the accuracy and the continuity during the pruning process, with the latter metric - continuity meaning that the pruning locations in the weight matrices are encouraged to not cause too many noncontinuous non-pruned locations thereby achieving friendly model implementation. More specifically, the proposed framework leverages the significance scoring and the continuity scoring to quantize the characteristics of each of pruned convolutional filters, then leverages the clustering technique to group the pruned filters for each convolutional stage. Afterwards, the regularized ranking approach is designed to rank the pruned filters, through putting more emphasis on the continuity scores to encourage friendly implementation. In the end, a dual-thresholding strategy is leveraged to increase the diversity in this framework, during significance & continuity cooptimization.Experimental results have demonstrated promising findings, with enhanced understanding of the spatial variability of the biomechanical dynamics and best performance body location selection, with the effective deep learning model pruning framework that can reduce the model size significantly with performance maintained, and further, with the boosted framework that cooptimizes the accuracy and continuity to all consider the friendly implementation during the pruning process. Overall, this research will greatly advance the deep biomechanical mining towards efficient smart health.
일반주제명  
Human mechanics
일반주제명  
Exercise
일반주제명  
Deep learning
일반주제명  
Computer science
일반주제명  
Recommender systems
일반주제명  
Normal distribution
일반주제명  
Clustering
일반주제명  
Camcorders
일반주제명  
Pattern recognition
일반주제명  
Gait
일반주제명  
Neural networks
일반주제명  
Natural language processing
일반주제명  
Biomechanics
일반주제명  
Accelerometers
일반주제명  
Human body
일반주제명  
Kinesiology
일반주제명  
Information science
일반주제명  
Information technology
기타저자  
Purdue University.
기본자료저록  
Dissertations Abstracts International. 86-05A.
전자적 위치 및 접속  
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MARC

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■1001  ▼aLiu,  Ming.
■24510▼aDeep  Learning  of  Biomechanical  Dynamics  with  Spatial  Variability  Mining  and  Model  Sparsifiation
■260    ▼a[Sl]▼bPurdue  University▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a96  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-05,  Section:  A.
■500    ▼aAdvisor:  Zhang,  Qingxue.
■5021  ▼aThesis  (Ph.D.)--Purdue  University,  2024.
■520    ▼aDeep  learning  of  biomechanical  dynamics  is  of  great  promise  in  smart  health  and  data-driven  precision  medicine.  Biomechanical  dynamics  are  related  to  the  movement  patterns  and  gait  characteristics  of  human  people  and  may  provide  important  insights  if  mined  by  deep  learning  models.  However,  efficient  deep  learning  of  biomechanical  dynamics  is  still  challenging,  considering  that  there  is  a  high  diversity  in  the  dynamics  from  different  body  locations,  and  the  deep  learning  model  may  need  to  be  lightweight  enough  to  be  able  to  be  deployed  in  real-time.Targeting  these  challenges,  we  have  firstly  conducted  studies  on  the  spatial  variability  of  biomechanical  dynamics,  aiming  to  evaluate  and  determine  the  optimal  body  location  that  is  of  great  promise  in  robust  physical  activity  type  detection.  Further,  we  have  developed  a  framework  for  deep  learning  pruning,  aiming  to  determine  the  optimal  pruning  schemes  while  maintaining  acceptable  performance.  More  specifically,  the  proposed  approach  first  evaluates  the  layer  importance  of  the  deep  learning  model,  and  then  leverages  the  probabilistic  distribution-enabled  threshold  determination  to  optimize  the  pruning  rate.  The  weighted  random  thresholding  method  is  first  investigated  to  further  the  understanding  of  the  behavior  of  the  pruning  action  for  each  layer.  Afterwards,  the  Gaussian-based  thresholding  is  designed  to  more  effectively  optimize  the  pruning  strategies,  which  can  find  out  the  fine-grained  pruning  schemes  with  both  emphasis  and  diversity  regulation.Even  further,  we  have  enhanced  and  boosted  the  efficient  deep  learning  framework,  to  co-optimize  the  accuracy  and  the  continuity  during  the  pruning  process,  with  the  latter  metric  -  continuity  meaning  that  the  pruning  locations  in  the  weight  matrices  are  encouraged  to  not  cause  too  many  noncontinuous  non-pruned  locations  thereby  achieving  friendly  model  implementation.  More  specifically,  the  proposed  framework  leverages  the  significance  scoring  and  the  continuity  scoring  to  quantize  the  characteristics  of  each  of  pruned  convolutional  filters,  then  leverages  the  clustering  technique  to  group  the  pruned  filters  for  each  convolutional  stage.  Afterwards,  the  regularized  ranking  approach  is  designed  to  rank  the  pruned  filters,  through  putting  more  emphasis  on  the  continuity  scores  to  encourage  friendly  implementation.  In  the  end,  a  dual-thresholding  strategy  is  leveraged  to  increase  the  diversity  in  this  framework,  during  significance  &  continuity  cooptimization.Experimental  results  have  demonstrated  promising  findings,  with  enhanced  understanding  of  the  spatial  variability  of  the  biomechanical  dynamics  and  best  performance  body  location  selection,  with  the  effective  deep  learning  model  pruning  framework  that  can  reduce  the  model  size  significantly  with  performance  maintained,  and  further,  with  the  boosted  framework  that  cooptimizes  the  accuracy  and  continuity  to  all  consider  the  friendly  implementation  during  the  pruning  process.  Overall,  this  research  will  greatly  advance  the  deep  biomechanical  mining  towards  efficient  smart  health.
■590    ▼aSchool  code:  0183.
■650  4▼aHuman  mechanics
■650  4▼aExercise
■650  4▼aDeep  learning
■650  4▼aComputer  science
■650  4▼aRecommender  systems
■650  4▼aNormal  distribution
■650  4▼aClustering
■650  4▼aCamcorders
■650  4▼aPattern  recognition
■650  4▼aGait
■650  4▼aNeural  networks
■650  4▼aNatural  language  processing
■650  4▼aBiomechanics
■650  4▼aAccelerometers
■650  4▼aHuman  body
■650  4▼aKinesiology
■650  4▼aInformation  science
■650  4▼aInformation  technology
■690    ▼a0984
■690    ▼a0648
■690    ▼a0800
■690    ▼a0575
■690    ▼a0723
■690    ▼a0489
■71020▼aPurdue  University.
■7730  ▼tDissertations  Abstracts  International▼g86-05A.
■790    ▼a0183
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17164961▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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