Optimizing time–cost trade-offs in product development projects with a multi-objective evolutionary algorithm

2016 ◽  
Vol 27 (4) ◽  
pp. 347-366 ◽  
Author(s):  
Christoph Meier ◽  
Ali A. Yassine ◽  
Tyson R. Browning ◽  
Ulrich Walter
2000 ◽  
Vol 48 (6) ◽  
pp. 858-865 ◽  
Author(s):  
Thomas A. Roemer ◽  
Reza Ahmadi ◽  
Robert H. Wang

2003 ◽  
Vol 18 ◽  
pp. 183-215 ◽  
Author(s):  
K. C. Tan ◽  
E. F. Khor ◽  
T. H. Lee ◽  
R. Sathikannan

This paper presents an evolutionary algorithm with a new goal-sequence domination scheme for better decision support in multi-objective optimization. The approach allows the inclusion of advanced hard/soft priority and constraint information on each objective component, and is capable of incorporating multiple specifications with overlapping or non-overlapping objective functions via logical 'OR' and 'AND' connectives to drive the search towards multiple regions of trade-off. In addition, we propose a dynamic sharing scheme that is simple and adaptively estimated according to the on-line population distribution without needing any a priori parameter setting. Each feature in the proposed algorithm is examined to show its respective contribution, and the performance of the algorithm is compared with other evolutionary optimization methods. It is shown that the proposed algorithm has performed well in the diversity of evolutionary search and uniform distribution of non-dominated individuals along the final trade-offs, without significant computational effort. The algorithm is also applied to the design optimization of a practical servo control system for hard disk drives with a single voice-coil-motor actuator. Results of the evolutionary designed servo control system show a superior closed-loop performance compared to classical PID or RPT approaches.


Energies ◽  
2018 ◽  
Vol 11 (7) ◽  
pp. 1863 ◽  
Author(s):  
Rui Oliveira ◽  
António Figueiredo ◽  
Romeu Vicente ◽  
Ricardo Almeida

This paper discusses the thermal and energy performance of a detached lightweight building. The building was monitored with hygrothermal sensors to collect data for building energy model calibration. The calibration was performed using a dynamic simulation through EnergyPlus® (EP) (Version 8.5, United States Department of Energy (DOE), Washington, DC, USA) with a hybrid evolutionary algorithm to minimise the root mean square error of the differences between the predicted and real recorded data. The results attained reveal a good agreement between predicted and real data with a goodness of fit below the limits imposed by the guidelines. Then, the evolutionary algorithm was used to meet the compliance criteria defined by the Passive House standard for different regions in Portugal’s mainland using different approaches in the overheating evaluation. The multi-objective optimisation was developed to study the interaction between annual heating demand and overheating rate objectives to assess their trade-offs, tracing the Pareto front solution for different climate regions throughout the whole of Portugal. However, the overheating issue is present, and numerous best solutions from multi-objective optimisation were determined, hindering the selection of a single best option. Hence, the life cycle cost of the Pareto solutions was determined, using the life cycle cost as the final criterion to single out the optimal solution or a combination of parameters.


2012 ◽  
Vol 459 ◽  
pp. 145-148
Author(s):  
Wan Qing Li ◽  
Shu Fen Tian ◽  
Ling Yu Meng ◽  
Qing Heng Zhang

The optimization of the three objectives, time, cost and quality, is the important project management content. This paper applies co-evolutionary algorithm to the optimization of the three engineering project objectives. The populations of time, cost and quality are separately designed for cooperative evolutionary operators in the paper, which are coordinated and compromised to get the coordination solution in pareto optimum. All the programming algorithms are through Matlab, and finally the feasibility and superioirty of this algorithm is proved by a engineering project


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