본문

서브메뉴

Enhanced Construction Cost Estimation of Highway Projects Using Emerging Statistical and Machine Learning Techniques
Enhanced Construction Cost Estimation of Highway Projects Using Emerging Statistical and M...
Enhanced Construction Cost Estimation of Highway Projects Using Emerging Statistical and Machine Learning Techniques

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202105559
ISBN  
9798263393816
DDC  
330
저자명  
Li, Mingshu.
서명/저자  
Enhanced Construction Cost Estimation of Highway Projects Using Emerging Statistical and Machine Learning Techniques
발행사항  
[Sl] : Georgia Institute of Technology, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
140 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-05, Section: A.
주기사항  
Advisor: Ashuri, Baabak.
학위논문주기  
Thesis (Ph.D.)--Georgia Institute of Technology, 2024.
초록/해제  
요약Several state departments of transportation (state DOTs) have encountered significant challenges in accurately estimating costs for their highway projects, often resulting in discrepancies between the states' DOT estimates (owner's estimates) and contractors' submitted bids. These inaccuracies can lead to cost overrun, scope change, schedule delay, postponement, and cancellation of transportation projects, which are problematic for both owner organizations and highway contractors. There is a critical need to enhance the quality of construction cost estimates to efficiently allocate public funds and increase confidence in engineer's estimates. Addressing this need, the overarching objective of this research is to advance construction cost estimation for highway projects through the application of emerging statistical modeling and machine learning techniques, examining cost estimation at varying levels of granularity for a comprehensive analysis.The study first adopts a temporal perspective at the monthly level, investigating risk factors that affect the accuracy of the owner's estimate. This level of analysis allows for the examination of several variables representing the local highway construction market, overall construction market, macroeconomic conditions, and the energy market to identify leading indicators of the ratio of low bid to owner's estimate. Appropriate time-series models, such as ARIMAX, will be applied to forecast this ratio using identified leading indicators. This macro-level analysis offers foundational insights into market trends and economic factors influencing cost estimations, setting the stage for more detailed investigations.Transitioning to the project level, the research conducts survival analysis to assess the relationship between several potential drivers and the likelihood of bid over r times estimate. By innovatively applying concepts and methods from survival analysis to construction cost estimation, this part of the study explores the impact of project-specific, bidder-specific, and external market characteristics on estimation accuracy. This project level analysis provides critical insights into the dynamics at play within individual projects, complementing the broader market perspective obtained from the temporal analysis.Finally, at the most granular pay item level, forecasting models for early-phase cost estimation of lump sum pay items (Traffic Control and Grading Complete) are developed using text-mining and machine learning techniques. This approach involves retrieving project information available at the early stages of project development through text analysis and examining various machine learning algorithms with identified key predictive features to select the best-performing model. By focusing on specific pay items, this level of analysis directly addresses the practical needs of designers and cost estimators, offering precise tools for early cost estimation and further enriching the comprehensive understanding gained from the previous analyses.This research contributes to the body of knowledge through: (1) developing appropriate multivariate time-series models (i.e., ARIMAX models) to predict the ratio of low bid to owner's estimate; (2) creating a Cox proportional hazards model to explain and predict the likelihood of bid over r times estimate; (3) developing machine learning algorithms to accurately estimate prices of lump sum pay item at early stages of project development. It is anticipated that the research outcome would help cost estimating professionals in transportation agencies better understand the risk factors and potential drivers of the deviation between owner's estimate and low bids, prepare more accurate cost estimates and develop appropriate risk management strategies for enhanced decision-making. Through its multi-level analysis, the study provides significant insights into project planning, budget allocation, and construction cost management, thereby underscoring the critical role of integrating machine learning and statistical modeling techniques in enhancing the accuracy and reliability of cost estimations for highway projects.
일반주제명  
Forecasting
일반주제명  
Transportation planning
일반주제명  
Data processing
일반주제명  
Causality
일반주제명  
Feature selection
일반주제명  
Prices
일반주제명  
Survival analysis
일반주제명  
Highway construction
일반주제명  
Traffic control
일반주제명  
Design
일반주제명  
Bids
일반주제명  
Computer science
일반주제명  
Transportation
기타저자  
Georgia Institute of Technology.
기본자료저록  
Dissertations Abstracts International. 87-05A.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

 008260126s2024        us                              c    eng  d
■001000017360636
■00520260202105559
■006m          o    d                
■007cr#unu||||||||
■020    ▼a9798263393816
■035    ▼a(MiAaPQ)AAI32315941
■035    ▼a(MiAaPQ)GeorgiaTech75257
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a330
■1001  ▼aLi,  Mingshu.
■24510▼aEnhanced  Construction  Cost  Estimation  of  Highway  Projects  Using  Emerging  Statistical  and  Machine  Learning  Techniques
■260    ▼a[Sl]▼bGeorgia  Institute  of  Technology▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a140  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-05,  Section:  A.
■500    ▼aAdvisor:  Ashuri,  Baabak.
■5021  ▼aThesis  (Ph.D.)--Georgia  Institute  of  Technology,  2024.
■520    ▼aSeveral  state  departments  of  transportation  (state  DOTs)  have  encountered  significant  challenges  in  accurately  estimating  costs  for  their  highway  projects,  often  resulting  in  discrepancies  between  the  states'  DOT  estimates  (owner's  estimates)  and  contractors'  submitted  bids.  These  inaccuracies  can  lead  to  cost  overrun,  scope  change,  schedule  delay,  postponement,  and  cancellation  of  transportation  projects,  which  are  problematic  for  both  owner  organizations  and  highway  contractors.  There  is  a  critical  need  to  enhance  the  quality  of  construction  cost  estimates  to  efficiently  allocate  public  funds  and  increase  confidence  in  engineer's  estimates.  Addressing  this  need,  the  overarching  objective  of  this  research  is  to  advance  construction  cost  estimation  for  highway  projects  through  the  application  of  emerging  statistical  modeling  and  machine  learning  techniques,  examining  cost  estimation  at  varying  levels  of  granularity  for  a  comprehensive  analysis.The  study  first  adopts  a  temporal  perspective  at  the  monthly  level,  investigating  risk  factors  that  affect  the  accuracy  of  the  owner's  estimate.  This  level  of  analysis  allows  for  the  examination  of  several  variables  representing  the  local  highway  construction  market,  overall  construction  market,  macroeconomic  conditions,  and  the  energy  market  to  identify  leading  indicators  of  the  ratio  of  low  bid  to  owner's  estimate.  Appropriate  time-series  models,  such  as  ARIMAX,  will  be  applied  to  forecast  this  ratio  using  identified  leading  indicators.  This  macro-level  analysis  offers  foundational  insights  into  market  trends  and  economic  factors  influencing  cost  estimations,  setting  the  stage  for  more  detailed  investigations.Transitioning  to  the  project  level,  the  research  conducts  survival  analysis  to  assess  the  relationship  between  several  potential  drivers  and  the  likelihood  of  bid  over  r  times  estimate.  By  innovatively  applying  concepts  and  methods  from  survival  analysis  to  construction  cost  estimation,  this  part  of  the  study  explores  the  impact  of  project-specific,  bidder-specific,  and  external  market  characteristics  on  estimation  accuracy.  This  project  level  analysis  provides  critical  insights  into  the  dynamics  at  play  within  individual  projects,  complementing  the  broader  market  perspective  obtained  from  the  temporal  analysis.Finally,  at  the  most  granular  pay  item  level,  forecasting  models  for  early-phase  cost  estimation  of  lump  sum  pay  items  (Traffic  Control  and  Grading  Complete)  are  developed  using  text-mining  and  machine  learning  techniques.  This  approach  involves  retrieving  project  information  available  at  the  early  stages  of  project  development  through  text  analysis  and  examining  various  machine  learning  algorithms  with  identified  key  predictive  features  to  select  the  best-performing  model.  By  focusing  on  specific  pay  items,  this  level  of  analysis  directly  addresses  the  practical  needs  of  designers  and  cost  estimators,  offering  precise  tools  for  early  cost  estimation  and  further  enriching  the  comprehensive  understanding  gained  from  the  previous  analyses.This  research  contributes  to  the  body  of  knowledge  through:  (1)  developing  appropriate  multivariate  time-series  models  (i.e.,  ARIMAX  models)  to  predict  the  ratio  of  low  bid  to  owner's  estimate;  (2)  creating  a  Cox  proportional  hazards  model  to  explain  and  predict  the  likelihood  of  bid  over  r  times  estimate;  (3)  developing  machine  learning  algorithms  to  accurately  estimate  prices  of  lump  sum  pay  item  at  early  stages  of  project  development.  It  is  anticipated  that  the  research  outcome  would  help  cost  estimating  professionals  in  transportation  agencies  better  understand  the  risk  factors  and  potential  drivers  of  the  deviation  between  owner's  estimate  and  low  bids,  prepare  more  accurate  cost  estimates  and  develop  appropriate  risk  management  strategies  for  enhanced  decision-making.  Through  its  multi-level  analysis,  the  study  provides  significant  insights  into  project  planning,  budget  allocation,  and  construction  cost  management,  thereby  underscoring  the  critical  role  of  integrating  machine  learning  and  statistical  modeling  techniques  in  enhancing  the  accuracy  and  reliability  of  cost  estimations  for  highway  projects.
■590    ▼aSchool  code:  0078.
■650  4▼aForecasting
■650  4▼aTransportation  planning
■650  4▼aData  processing
■650  4▼aCausality
■650  4▼aFeature  selection
■650  4▼aPrices
■650  4▼aSurvival  analysis
■650  4▼aHighway  construction
■650  4▼aTraffic  control
■650  4▼aDesign
■650  4▼aBids
■650  4▼aComputer  science
■650  4▼aTransportation
■690    ▼a0389
■690    ▼a0800
■690    ▼a0984
■690    ▼a0501
■690    ▼a0709
■71020▼aGeorgia  Institute  of  Technology.
■7730  ▼tDissertations  Abstracts  International▼g87-05A.
■790    ▼a0078
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360636▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

미리보기

내보내기

chatGPT토론

Ai 추천 관련 도서


    신착도서 더보기
    최근 3년간 통계입니다.

    소장정보

    • 예약
    • 소재불명신고
    • 나의폴더
    • 우선정리요청
    • 비도서대출신청
    • 야간 도서대출신청
    소장자료
    등록번호 청구기호 소장처 대출가능여부 대출정보
    TF15501 전자도서 대출가능 마이폴더 부재도서신고 비도서대출신청 야간 도서대출신청

    * 대출중인 자료에 한하여 예약이 가능합니다. 예약을 원하시면 예약버튼을 클릭하십시오.

    해당 도서를 다른 이용자가 함께 대출한 도서

    관련 인기도서

    로그인 후 이용 가능합니다.