Generalized linear model-based expert system for estimating the cost of transportation projects

Chou, Jui‐Sheng

doi:10.1016/j.eswa.2008.03.017

Cited by 50 publications

(18 citation statements)

References 25 publications

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“…The model can also be used as a tool to monitor the "process continual improvement", a requirement stated in the latest (year 2000) version of the ISO 9000 quality management system. Chou (2009) developed a generalized linear model (GLM) of early quantity prediction technique applied to Texas highway projects using a set of project characteristics. The model depends on geometry-related work activities, namely earthwork, pavement and traffic control which were used for continuous project cost tracking.…”

Section: Literature Reviewmentioning

confidence: 99%

Modeling of Construction Cost of Villas in Oman

Al-Mohsin

Al-Nuaimi

2014

Jou. Eng. Res.

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In this research, a model for estimating construction cost of villas is presented. The model takes into account four major factors affecting villa's cost, namely: built up area, number of toilets, number of bedrooms and the number of stories. A field survey was conducted to collect information required for such model using data collection form designed by the researchers. Information about 150 villas was collected from six well experienced consultants in the field of villa design and supervision in Oman. Collected data was analyzed to develop suggested model which consists of two main levels of estimate. The first level is at the conceptual design stage where the client presents his/her need of space and basic information about the available plot for construction. The second level of cost estimation is carried out after the preliminary design stage where the client has to decide on the finishes and type of structure. At the second level of estimation, the client should be able to decide whether to precede for construction or not, according to his/her budget. The model is general and can be used anywhere and was validated for accepted degree of confidence using the actual cost of the 112 executed villa projects in Oman. The villas included in this study were owned by clients from both high and low income brackets and had different types of finishing material. The developed equations showed good correlation between the selected variables and the actual cost with R2 = 0.79 in the case of conceptual estimate and R2 = 0.601 for preliminary estimate.

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Section: Literature Reviewmentioning

confidence: 99%

Modeling of Construction Cost of Villas in Oman

Al-Mohsin

Al-Nuaimi

2014

Jou. Eng. Res.

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“…The differences should be gradually narrowed down as a project progresses. Once the initial gap between estimated and actual costs can be reduced during the initiation stage, a project should proceed smoothly as additional input information is acquired [1]. Many cost estimation methods have been developed to increase the accuracy of project budgeting.…”

Section: Introductionmentioning

confidence: 99%

Project data warehouse management with multivariate analysis

Chou

Tseng²

2010

2010 IEEE International Conference on Industrial Engineering and Engineering Management

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Numerous studies have generated cost estimating relationships (CERs) for transportation projects via data analysis. Some studies collected data from databases, while others sourced data from conventional paper-based formats. When cost data were not in a consistent format, many studies failed to discuss the streamlining of pattern recognition. This work adopts a standard procedure for identifying CERs for transportation projects. A pavement maintenance and rehabilitation project type was selected as a case study for extracting data and concealed prediction rules. Linear and log-linear statistical approaches were employed to create optimal models. The resulting optimum estimation models via knowledge discovery in databases process can be then integrated into an expert system to facilitate information management and generate preliminary budgets for transportation agencies.

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“…The differences should be gradually narrowed down as a project progresses. Once the initial gap between estimated and actual costs can be reduced during the initiation stage, a project should proceed smoothly as additional input information is acquired (Chou 2009). Many cost estimation methods have been developed to increase the accuracy of project budgeting.…”

Section: Literature Reviewmentioning

confidence: 99%

Project Data Warehouse Management with Multivariate Analysis

Chou¹,

Wang²,

Tseng³

2010

Proceedings -- The 27th International Symposium on Automation and Robotics in Construction

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Many studies have generated cost estimating relationships (CERs) for transportation projects via data analysis. Some studies collected data from databases, while others sourced data from conventional paper-based formats. When cost data were not in a consistent format, many studies failed to discuss the streamlining of pattern recognition. This study adopts a standard procedure for identifying CERs for transportation projects. A pavement maintenance and rehabilitation project type was selected as a case study for extracting data and concealed prediction rules. Linear and log-linear statistical approaches were employed to create optimal models. The resulting optimum estimation models via knowledge discovery in databases process can be then integrated into an expert system to facilitate information management and generate preliminary budgets for transportation agencies.

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Generalized linear model-based expert system for estimating the cost of transportation projects

Cited by 50 publications

References 25 publications

Modeling of Construction Cost of Villas in Oman

Modeling of Construction Cost of Villas in Oman

Project data warehouse management with multivariate analysis

Project Data Warehouse Management with Multivariate Analysis

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