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Anwer, S, Li, H, Antwi-Afari, M F, Umer, W and Wong, A Y L (2021) Evaluation of Physiological Metrics as Real-Time Measurement of Physical Fatigue in Construction Workers: State-of-the-Art Review. Journal of Construction Engineering and Management, 147(05).

Assaad, R and El-adaway, I H (2021) Determining Critical Combinations of Safety Fatality Causes Using Spectral Clustering and Computational Data Mining Algorithms. Journal of Construction Engineering and Management, 147(05).

Besklubova, S, Skibniewski, M J and Zhang, X (2021) Factors Affecting 3D Printing Technology Adaptation in Construction. Journal of Construction Engineering and Management, 147(05).

Castelblanco, G, Guevara, J, Mesa, H and Sanchez, A (2021) Semantic Network Analysis of Literature on Public-Private Partnerships. Journal of Construction Engineering and Management, 147(05).

Chen, X, Zhang, Y, Zhao, B and Yang, S (2021) Investment Probabilistic Interval Estimation for Construction Project Using the Hybrid Model of SVR and GWO. Journal of Construction Engineering and Management, 147(05).

  • Type: Journal Article
  • Keywords: Cost prediction; Support vector regression (SVR); Confidence interval; Nonparametric estimation; Grey wolf optimization (GWO); Error distribution;
  • ISBN/ISSN: 0733-9364
  • URL: https://doi.org/10.1061/(ASCE)CO.1943-7862.0002032
  • Abstract:
    Investment estimation is a key component of early decision-making for a construction project, which is crucial to the project cost control. Currently, most investment estimation researches render the point value results, which could lead to considerable uncertainty in the estimation results and increase the risk of decision-making. Therefore, it is essential to explore a type of systematic, accurate, and effective estimation method. This study proposed an innovative estimation method of probability interval prediction based on the distribution of prediction errors. First, the dimension reduction of the construction indexes was conducted by using exploratory factor analysis (EFA). Then, a model was developed based on the fusion of the support vector regression (SVR) and grey wolf optimization (GWO) algorithm. Finally, cost intervals with different confidence levels were obtained on the basis of kernel density estimation (KDE). The case results indicated that when the confidence was 95%, the comprehensive evaluation index coverage width-based criterion (CWC) and the interval coverage rate PICC of the cost estimation were 2.17 and 93.33%, respectively. Hence, the proposed interval prediction model was fairly reliable, which could provide practical guidance for the investment decisions in the early stage of construction projects and give the decision makers more abundant forecasting information.

Guo, S, Tang, B, Liang, K, Zhou, X and Li, J (2021) Comparative Analysis of the Patterns of Unsafe Behaviors in Accidents between Building Construction and Urban Railway Construction. Journal of Construction Engineering and Management, 147(05).

Johari, S and Neeraj Jha, K (2021) Framework for Identifying Competencies of Construction Workers. Journal of Construction Engineering and Management, 147(05).

Lv, J, Lin, M, Zhou, W and Xu, M (2021) How PPP Renegotiation Behaviors Evolve with Traffic Changes: Evolutionary Game Approach. Journal of Construction Engineering and Management, 147(05).

Moon, S and Munira Chowdhury, A (2021) Utilization of Prior Information in Neural Network Training for Improving 28-Day Concrete Strength Prediction. Journal of Construction Engineering and Management, 147(05).

Mousaei, A, Taghaddos, H, Nekouvaght Tak, A, Behzadipour, S and Hermann, U (2021) Optimized Mobile Crane Path Planning in Discretized Polar Space. Journal of Construction Engineering and Management, 147(05).

Pradhananga, P, ElZomor, M and Santi Kasabdji, G (2021) Identifying the Challenges to Adopting Robotics in the US Construction Industry. Journal of Construction Engineering and Management, 147(05).

Sparkling, A E and Dogra, P (2021) Supervisors’ Reliance on Tacit Knowledge and Barriers to Knowledge Sharing in the Electrical Contracting Industry. Journal of Construction Engineering and Management, 147(05).

Zaalouk, A and Han, S (2021) Parameterized Design Optimization Framework for Worker-Friendly Workplaces in Modular Construction. Journal of Construction Engineering and Management, 147(05).