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研究生: Andreas Franskie Van Roy
Andreas - Franskie Van Roy
論文名稱: Evolutionary Fuzzy Decision Model for Construction Management using Weighted Support Vector Machine
Evolutionary Fuzzy Decision Model for Construction Management using Weighted Support Vector Machine
指導教授: 鄭明淵
Min-Yuan Cheng
口試委員: 周瑞生
Jui-Sheng Chou
曾惠斌
Hui-Ping Tserng
王維志
Wei-Chih Wang
鄭道明
Tao-Ming Cheng
學位類別: 博士
Doctor
系所名稱: 工程學院 - 營建工程系
Department of Civil and Construction Engineering
論文出版年: 2010
畢業學年度: 98
語文別: 英文
論文頁數: 139
外文關鍵詞: Fast messy genetic algorithms, weighted Support vector machine, Fuzzy logic, Construction management
相關次數: 點閱:253下載:13
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  • Construction projects are, by their very nature, challenging; and project decision makers must work successfully within an environment that is frequently complex and fraught with uncertainty. As many decisions must be made intuitively based on limited information, successful decision making depends heavily on two factors, including the experience of the expert(s) involved and the quality of knowledge accumulated from previous experience. Knowledge, however, is subject to various factors that cause its value and accuracy to deteriorate. Research has demonstrated that artificial intelligence has the potential to overcome these factors.
    The Evolutionary Fuzzy Support Vector Machine Inference Model (EFSIM), an artificial intelligence hybrid system that fuses together fuzzy logic (FL), weighted support vector machines (SVMs) and a fast messy genetic algorithm (fmGA), represents an alternative approach to retaining and utilizing experiential knowledge. In the EFSIM, FL handles imprecision in the environment and approximate reasoning; weighted SVMs act as a supervised learning tool to handle fuzzy input-output mapping focused on data characteristics; and fmGA is used as an optimization tool to search simultaneously for fittest membership functions, defuzzification parameter and weighted SVMs parameters (herein C,  and ).
    The Evolutionary Fuzzy Support Vector Machine Inference System (EFSIS), in effect an automated EFSIM adaptation process, used one artificial and four real construction management problems to demonstrate the EFSIM as an effective and potential tool for solving various problems in construction management.

    TABLE OF CONTENTS ABSTRACT i ACKNOWLEDGEMENTS iii TABLE OF CONTENTS iv ABBREVIATIONS AND SYMBOLS vii LIST OF FIGURES xiv LIST OF TABLES xvi 1. INTRODUCTION 1 1.1 Research Motivation 1 1.2 Research Objectives 5 1.3 Scope Definition 6 1.3.1 Boundary Identification 6 1.3.2 Research Hypotheses and Assumptions 7 1.4 Research Methodology 8 1.4.1 Problem Formulation 10 1.4.2 Literature Review 11 1.4.3 Model Construction 11 1.4.4 System Development 12 1.4.5 Assessment 13 1.5 Study Outline 13 2. FUZZY LOGIC (FL), WEIGHTED SUPPORT VECTOR MACHINES (WEIGTED SVMs), FAST MESSY GENETIC ALGORITHMS (fmGA), AND OBJECT ORIENTED SYSTEM DEVELOPMENT (OOSD) 15 2.1 Fuzzy Logic 16 2.1.1 Basic Concept 16 2.1.2 Application in Construction Management 19 2.1.2 Advantages and Disadvantages 20 2.2 Weighted Support Vector Machines (Weighted SVMs) 22 2.2.1 Basic Concept 22 2.2.2 Advantages and Disadvantages 25 2.3 Fast Messy Genetic Algorithms (fmGA) 27 2.3.1 Basic Concept 27 2.3.2 Advantages and Disadvantages 32 2.4 Object-Oriented System Development (OOSD) 33 2.4.1 Basic Concept 33 2.4.3 Advantages and Disadvantages 36 3. EVOLUTIONARY FUZZY SUPPORT VECTOR MACHINES INFERENCE MODEL 38 3.1 Model Architecture 38 3.2 Model Adaptation Pocess 40 3.2.1 Initialize Competitive Template 42 3.2.1.1 Use the SWRM to Encode MFs 44 3.2.1.2. Encode dfp, C,  and  3.2.2 Initial Phase 46 3.2.2.1 Probabilistic Initialization 46 3.2.2.2. Evaluate Individuals  3.2.3 Primordial Phase 52 3.2.3.1 Threshold Selection 53 3.2.3.2. Building Blocks Filtering  3.2.4 Juxtapositional Phase 54 3.2.4.1 Cut and Splice 54 3.2.4.2. Mutation  3.3 Model Application Process 55 3.4 Model Requirements and Limitations 58 3.5 Potential Application Areas 59 4. EVOLUTIONARY FUZZY SUPPORT VECTOR MACHINE INFERENCE SYSTEM 60 4.1 Object-Oriented System Development Process 60 4.1.1 Planning Phase 61 4.1.2 Building Phase 62 4.1.2.1 System Analysis 63 4.1.2.2 System Design 68 4.1.2.3 System Construction 73 4.1.2.4 System Testing 74 4.1.3 Deploying Phase 74 4.2 System Demonstration 78 4.2.1 System Main View and Case Problem Parameters Setting 78 4.2.2 Result Files 80 5. SYSTEM VALIDATION 83 5.1 Prepare for System Validation 84 5.1.1 Data Preprocessing 84 5.1.2 Configuration of Model Parameters 85 5.1.3 Performance Evaluation 86 5.2 Function Approximation 87 5.2.1 Problem Statement 87 5.2.2 Model Application 87 5.3 Conceptual Cost Estimates 88 5.3.1 Problem Statement 88 5.3.2 Model Application 89 5.4 Estimate at Completion for Construction Projects 93 5.4.1 Problem Statement 93 5.4.2 Model Application 95 5.5 Controlling Project Cash Flow 99 5.5.1 Problem Statement 99 5.5.2 Model Application 101 5.6 Prediction of Project Success 105 5.6.1 Problem Statement 105 5.6.2 Model Application 109 5.7 Discussion Implementation of EFSIM 121 6. CONCLUSIONS AND RECOMMENDATIONS 122 6.1 Review the Research Purpose 122 6.2 Research Accomplishment 123 6.3 Conclusions 124 6.4 Research Contributions 126 6.5 Future Research Direction and Recommendations 127 BIBLIOGRAPHY 129 APPENDIX A (Table of Fittest Membership Functions) A-1 APPENDIX B (EFSIS Manual) B-1 CURRICULUM VITAE LIST OF FIGURES Figure 1.1 Research Flow Chart 8 Figure 1.2 Detailed Research Flow Chart 9 Figure 2.1 General Schema of Fuzzy Logic System (FLS). 17 Figure 2.2 Underspecified messy chromosomes are evaluated by taking the missing genes from the competitive template (Knjazew 2002) 29 Figure 2.3 Cut–splice operator. (Feng et al. 2006) 29 Figure 2.4 Mutation operator. (Feng et al. 2006) 30 Figure 2.5 The Incremental and Iterative Method (Ko, 2002) 35 Figure 3.1 EFSIM Architecture 40 Figure 3.2 EFSIM Adaptation Process 41 Figure 3.3 EFSIM Adaptation Structure 42 Figure 3.4 EFSIM Chromosome Structure 43 Figure 3.5 Membership function: (a) trapezoidal; (b) triangular; (c) complete MF set (Ko, 2002) 44 Figure 3.6 Fuzzification process 50 Figure 3.7 Illustration curve of the time function: (a) linear; (b) quadratic (Lin and Wang, 2002) 51 Figure 3.8 Cut–splice operators 54 Figure 3.9 Mutation (Genotype) 55 Figure 3.10 Model Application Process 56 Figure 3.11 Potential Application Areas of the EFSIM in Construction Management 59 Figure 4.1 EFSIS Object-Oriented System Development Process 61 Figure 4.2 System Usage Process 64 Figure 4.3 System Concepts 66 Figure 4.4 System Behaviors: (a) Sequence Diagram of Handle Record Use Case; (b) Sequence Diagram of Search Optimal Solution Use Case; (c) Sequence Diagram of Infer Possible Results Use Case 67 Figure 4.5 Two-Tiered Object-Oriented EFSIS Architecture 69 Figure 4.6 Object Interactions: (a) Collaboration Diagram of Handle Record Use Case; (b) Collaboration Diagram of Search Optimal Solution Use Case; (c) Collaboration Diagram of Calculate Actual Output Use Case 70 Figure 4.7 System Software Classes: (A) Class Diagram: Management Concept; (B) Class Diagram: Adaptation Concept; (C) Class Diagram: Inference Concept 72 Figure 4.8 System Application Process 77 Figure 4.9 EFSIS Main View 78 Figure 4.10 Examples of Input Case Problem Parameters and Characteristic 79 Figure 4.11 Input Views for Number of Cases per Project 80 Figure 4.12 Example of the Output Text File 81 Figure 4.13 Example of the Optimal Text File 81 Figure 4.14 Example of the Pred Text File 82 Figure 4.15 Example of the Summwidth Text File 82 Figure 5.1 Example of Three Sequential Period of ECF as One Set of Historical Data 103 Figure 5.2 Specific Model Application Process for Prediction of Project Success. 109 Figure 5.3 Average s-curves graphs for actual owner expenditures and zone apportion of project outcomes degree 114 Figure 5.4 The project outcome degree of project I.D. 233 until 50% completion 115 LIST OF TABLES Table 3.1 Summary of EFSIM parameter settings 46 Table 4.1 Type of Function in the System 62 Table 4.2 High-Level Use Case of the EFSIS 65 Table 4.3 System Operation Contrast 68 Table 5.1 Model Parameters 86 Table 5.2 Detailed Information on SVMs Implementation 86 Table 5.3 Detailed Information on ESIM Implementation 87 Table 5.4 Input and output pattern 88 Table 5.5 Performance comparison of Function Approximation 88 Table 5.6 Patterns for Conceptual Estimating of Building Costs 91 Table 5.7 Description of Qualitative Factors Involved in Conceptual Cost Estimations 92 Table 5.8 Generalization Comparison for Conceptual Estimating of Building Cost 93 Table 5.9 Description of 10 input factors and 1 output factor 96 Table 5.10 Example of 24 Training Cases Taken from 1 Project 97 Table 5.11 Data of 17 Testing Cases from 1 Project 97 Table 5.12 Generalization Comparison for Estimate at Completion for Construction Projects 98 Table 5.13 Example of sequential ECF training data from 1 project (Liu, 2006) 103 Table 5.14 Generalization Comparison for Project Cash Flow Problem 105 Table 5.15 Description of 11 time-dependent factors with level of significance below 0.10 112 Table 5.16 Four Quantitative Values Associated to Degree of Project Outcomes 116 Table 5.17 Example learning and testing data on 50% completion data of project I.D. 233 (11 time-dependent variables and 1 output) 117 Table 5.18 RSME and the average error percentage comparison between EFSIM, SVMs and ESIM on Three Learning Sets 119 Table 5.19 Detail error percentage comparison on 50%, 67%, 90% completion 120

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