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Content Summary. Introduction. CHAPTER 1. Introduction. 1.1 Purpose and Significance. 1.2 Summary of Research and Problems. 1.2.1 Fault Tree Research. 1.2.2 Multi-factor Influence and Fault Big Data. 1.2.3 System Function Structure Analysis and Factor Space. 1.2.4 System Reliability and Influencing Factors. 1.2.5 Cloud Model and Similarity. 1.2.6 Object Classification and Similarity. 1.3 Deficiency of System Reliability. References. CHAPTER 2. Continuous Space Fault Tree. 2.1 Concepts of CSFT. 2.2 Fault Probability Distribution. 2.2.1 Component Fault Probability Distribution. 2.2.2 System Fault Probability Distribution. 2.3 Importance Distributions. 2.3.1 Probability Importance Distribution. 2.3.2 Criticality Importance Distribution. 2.4 System Fault Probability Distribution Trend. 2.5 Calculation of MTLa. 2.6 Conclusions. References. CHAPTER 3. Discrete Space Fault Tree. 3.1 Discrete Space Fault Tree. 3.2 Significance of DSFT Modified Using Fuzzy Structured Element. 3.3 Factor Projection Fitting Method. 3.4 Constructions and Applications of EDSFT. 3.4.1 E-Characteristic Function. 3.4.2 E-Component Fault Probability Distribution. 3.4.3 E-System Fault Probability Distribution. 3.4.4 E-Probability Importance Distribution. 3.4.5 E-Criticality Importance Distribution. 3.4.6 E-System Fault Probability Distribution Trend. 3.4.7 E-Component Domain Importance. 3.4.8 E-Factor Importance Distribution. 3.4.9 E-Factor Joint Importance Distribution. 3.5 Conclusions. References. CHAPTER 4. Inward Analysis of System Factor Structure. 4.1 Inward Analysis of System Factor Structure. 4.2 Human-Machine Cognition. 4.3 Table Method. 4.4 Classification Reasoning Method. 4.5 Mathematical Description of Classification Reasoning Method. 4.6 Item-By-Item Analyses. 4.7 Mathematical Description of Item-by-Item Analyses. 4.8 Conclusions. References. CHAPTER 5. Function Structure Analysis and Factor Space. 5.1 Factor Analysis Method of Function Structure. 5.1.1 Factors and Dimension Variability. 5.1.2 Function Structure Analysis Space. 5.2 Factor Logic Description of Function Structure. 5.2.1 Axiom System of Function Structure Analysis. 5.2.2 Minimization Method of System Function Structure. 5.3 Analysis of System Function Structure. 5.3.1 Analysis with Incomplete Information. 5.3.2 Analysis with Complete Information. 5.4 Conclusions. References. CHAPTER 6. System Reliability with Influencing Factors. 6.1 Methodology of Concepts and Definitions. 6.2 Analysis of Relationship between Reliability and Influencing Factors. 6.2.1 Random Variable Decomposition Formula. 6.2.2 Causal Relationship Reasoning. 6.2.3 Causal Concept Extraction. 6.2.4 Background Relationship Analysis. 6.2.5 Factor Dimension Reduction. 6.2.6 Compression of Fault Probability Distribution. 6.3 Algorithm Application. 6.3.1 Random Variable Decomposition Formula. 6.3.2 Causal Relationship Reasoning. 6.3.3 Causal Concept Extraction. 6.3.4 Background Relationship Analysis. 6.3.5 Factor Dimension Reduction. 6.3.6 Compression of Fault Probability Distribution. 6.4 Conclusions. References. CHAPTER 7. Cloudization Space Fault Tree. 7.1 Definitions of SFT. 7.2 Construction of Cloudization Space Fault Tree. 7.2.1 Basis of CLSFT. 7.2.2 Cloudization Fault Probability Distribution. 7.2.3 Cloudization Fault Probability Distribution Trend. 7.2.4 Cloudization Importance Distribution Probability and Criticality. 7.2.5 Cloudization Factor Importance and Joint Importance Distribution. 7.2.6 Cloudization Component Domain Importance. 7.2.7 Cloudization Path Set Domain and Cut Set Domain. 7.2.8 Uncertainty Analysis of Reliability Data. 7.3 Example Analysis. 7.3.1 Cloudization Fault Probability Distribution. 7.3.2 Cloudization Fault Probability Distribution Trend. 7.3.3 Cloudization Importance Distribution Probability and Criticality. 7.3.4 Cloudization Importance Distribution of Factor and Factor Joint. 7.3.5 Cloudization Component Domain Importance. 7.3.6 Cloudization Path Set Domain and Cut Set Domain. 7.3.7 Uncertainty Analysis of Reliability Data. References. CHAPTER 8. Cloud Similarity. 8.1 Similarity Algorithms of Cloud Model. 8.2 Cloud Similarity Computation Based on Envelope. 8.3 Algorithm Application. 8.4 Analyses of Algorithm Advantage. 8.5 Conclusions. References. CHAPTER 9. Clustering Analysis and Similarity. 9.1 Preliminary Knowledge. 9.2 Concepts and Properties of Attribute Circle. 9.3 Object Clustering Analysis Method. 9.4 Improvements of Clustering Analysis. 9.5 Example Analyses. 9.6 Conclusions. References. CHAPTER 10. Development and Future Prospects. 10.1 Summary of Space Fault Tree. 10.2 Future Development of Space Fault Tree.

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