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Unifying Physics and Semantics for Robust Sensor Time Series Analysis
Unifying Physics and Semantics for Robust Sensor Time Series Analysis
Unifying Physics and Semantics for Robust Sensor Time Series Analysis

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20250211151359
ISBN  
9798383191347
DDC  
004
저자명  
Zhang, Xiyuan.
서명/저자  
Unifying Physics and Semantics for Robust Sensor Time Series Analysis
발행사항  
[Sl] : University of California, San Diego, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
210 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-01, Section: B.
주기사항  
Advisor: Gupta, Rajesh K.;Shang, Jingbo.
학위논문주기  
Thesis (Ph.D.)--University of California, San Diego, 2024.
초록/해제  
요약The past decade has witnessed a significant growth of deployed sensors in our daily life, covering applications from healthcare, climate modeling to home automation and robotics. These sensors collect abundant time series data, which facilitate our understanding of various real-life processes. However, the inherent instability of these sensors, combined with the dynamic environments in which they operate, often results in the collection of data that is noisy, sparse, insufficient and varied. This presents a significant contrast to the data typically encountered in other domains such as computer vision and natural language processing. Consequently, current data-driven models trained under controlled experimental settings often fall short of their value in accurate inferencing and analyses. To address these limitations, we propose to bridge the inherent physical contextual knowledge and external semantic contextual knowledge of sensor time series to build a more robust analysis framework for sensor data. Specifically, we first exploit the inherent physics principles underlying time series data - ranging from mathematical models, spatio-temporal correlations to spectral properties - as inherent contextual knowledge. We leverage such physics knowledge to refine raw sensor time series and enhance data quality through denoising, imputation and augmentation. Additionally, sensor time series are often accompanied with external label names or metadata presented as text. Therefore, we build upon the recent advances in language modeling, to incorporate external semantic contextual knowledge from large language models or pre-train our own domain-specific foundation models. Such semantic knowledge further enriches sensor time series understanding and increases cross-domain robustness. Our framework is robust and demonstrates state-of-the-art performance in multiple tasks such as recognition, forecasting and navigation across sensing systems of various scales, from small-scale personal healthcare monitoring, smart home automation, to large-scale smart building control, energy management, climate modeling and beyond.
일반주제명  
Computer science
일반주제명  
Information technology
일반주제명  
Robotics
키워드  
Sensors
키워드  
Time series data
키워드  
Energy management
키워드  
Home automation
키워드  
Climate modeling
기타저자  
University of California, San Diego Computer Science and Engineering
기본자료저록  
Dissertations Abstracts International. 86-01B.
전자적 위치 및 접속  
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MARC

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■020    ▼a9798383191347
■035    ▼a(MiAaPQ)AAI31244163
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a004
■1001  ▼aZhang,  Xiyuan.
■24510▼aUnifying  Physics  and  Semantics  for  Robust  Sensor  Time  Series  Analysis
■260    ▼a[Sl]▼bUniversity  of  California,  San  Diego▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a210  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-01,  Section:  B.
■500    ▼aAdvisor:  Gupta,  Rajesh  K.;Shang,  Jingbo.
■5021  ▼aThesis  (Ph.D.)--University  of  California,  San  Diego,  2024.
■520    ▼aThe  past  decade  has  witnessed  a  significant  growth  of  deployed  sensors  in  our  daily  life,  covering  applications  from  healthcare,  climate  modeling  to  home  automation  and  robotics.  These  sensors  collect  abundant  time  series  data,  which  facilitate  our  understanding  of  various  real-life  processes.  However,  the  inherent  instability  of  these  sensors,  combined  with  the  dynamic  environments  in  which  they  operate,  often  results  in  the  collection  of  data  that  is  noisy,  sparse,  insufficient  and  varied.  This  presents  a  significant  contrast  to  the  data  typically  encountered  in  other  domains  such  as  computer  vision  and  natural  language  processing.  Consequently,  current  data-driven  models  trained  under  controlled  experimental  settings  often  fall  short  of  their  value  in  accurate  inferencing  and  analyses.  To  address  these  limitations,  we  propose  to  bridge  the  inherent  physical  contextual  knowledge  and  external  semantic  contextual  knowledge  of  sensor  time  series  to  build  a  more  robust  analysis  framework  for  sensor  data.  Specifically,  we  first  exploit  the  inherent  physics  principles  underlying  time  series  data  -  ranging  from  mathematical  models,  spatio-temporal  correlations  to  spectral  properties  -  as  inherent  contextual  knowledge.  We  leverage  such  physics  knowledge  to  refine  raw  sensor  time  series  and  enhance  data  quality  through  denoising,  imputation  and  augmentation.  Additionally,  sensor  time  series  are  often  accompanied  with  external  label  names  or  metadata  presented  as  text.  Therefore,  we  build  upon  the  recent  advances  in  language  modeling,  to  incorporate  external  semantic  contextual  knowledge  from  large  language  models  or  pre-train  our  own  domain-specific  foundation  models.  Such  semantic  knowledge  further  enriches  sensor  time  series  understanding  and  increases  cross-domain  robustness.  Our  framework  is  robust  and  demonstrates  state-of-the-art  performance  in  multiple  tasks  such  as  recognition,  forecasting  and  navigation  across  sensing  systems  of  various  scales,  from  small-scale  personal  healthcare  monitoring,  smart  home  automation,  to  large-scale  smart  building  control,  energy  management,  climate  modeling  and  beyond.
■590    ▼aSchool  code:  0033.
■650  4▼aComputer  science
■650  4▼aInformation  technology
■650  4▼aRobotics
■653    ▼aSensors
■653    ▼aTime  series  data
■653    ▼aEnergy  management
■653    ▼aHome  automation
■653    ▼aClimate  modeling
■690    ▼a0984
■690    ▼a0489
■690    ▼a0800
■690    ▼a0771
■71020▼aUniversity  of  California,  San  Diego▼bComputer  Science  and  Engineering.
■7730  ▼tDissertations  Abstracts  International▼g86-01B.
■790    ▼a0033
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17161462▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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