This paper presents a novel method for constructing fuzzy controllers based on a real time reinforcement genetic algorithm. This methodology introduces the real-time learning capability of neural networks into globall...This paper presents a novel method for constructing fuzzy controllers based on a real time reinforcement genetic algorithm. This methodology introduces the real-time learning capability of neural networks into globally searching process of genetic algorithm, aiming to enhance the convergence rate and real-time learning ability of genetic algorithm, which is then used to construct fuzzy controllers for complex dynamic systems without any knowledge about system dynamics and prior control experience. The cart-pole system is employed as a test bed to demonstrate the effectiveness of the proposed control scheme, and the robustness of the acquired fuzzy controller with comparable result.展开更多
A novel approach to control the unpredictable behavior of chaotic systems is presented. The control algorithm is based on fuzzy logic control technique combined with genetic algorithm. The use of fuzzy logic allows fo...A novel approach to control the unpredictable behavior of chaotic systems is presented. The control algorithm is based on fuzzy logic control technique combined with genetic algorithm. The use of fuzzy logic allows for the implementation of human "rule-of-thumb" approach to decision making by employing linguistic variables. An improved Genetic Algorithm (GA) is used to learn to optimally select the fuzzy membership functions of the linguistic labels in the condition portion of each rule, and to automatically generate fuzzy control actions under each condition. Simulation results show that such an approach for the control of chaotic systems is both effective and robust.展开更多
目的分析心房颤动抗凝治疗研究的全球现状、热点和变化趋势。方法以Web of Science核心合集为数据来源,检索并收集2006~2020年心房颤动抗凝治疗的相关文献。利用可视化软件CiteSpace和VOSviewer对发文机构、发文期刊及关键词进行共引、...目的分析心房颤动抗凝治疗研究的全球现状、热点和变化趋势。方法以Web of Science核心合集为数据来源,检索并收集2006~2020年心房颤动抗凝治疗的相关文献。利用可视化软件CiteSpace和VOSviewer对发文机构、发文期刊及关键词进行共引、共现、突现分析,探索和分析国内外房颤抗凝治疗的研究热点和前沿。结果共检索到相关文献11764篇。近年来房颤抗凝的研究热度逐步升高,已发表的研究集中在北美洲,最重要的研究机构是伯明翰大学。研究热点主要集中在华法林、卒中预防、新型口服抗凝药、抗血栓抗血小板治疗、合并疾病等方面,研究前沿为新型口服抗凝药的研究及心房颤动合并冠心病的抗血栓管理。结论文献计量学研究结果认为全球心房颤动抗凝研究热点是华法林、卒中预防、新型口服抗凝药、抗血栓抗血小板治疗、合并疾病等方面;研究前沿是新型口服抗凝药的研究及心房颤动合并冠心病的抗血栓管理。展开更多
文摘This paper presents a novel method for constructing fuzzy controllers based on a real time reinforcement genetic algorithm. This methodology introduces the real-time learning capability of neural networks into globally searching process of genetic algorithm, aiming to enhance the convergence rate and real-time learning ability of genetic algorithm, which is then used to construct fuzzy controllers for complex dynamic systems without any knowledge about system dynamics and prior control experience. The cart-pole system is employed as a test bed to demonstrate the effectiveness of the proposed control scheme, and the robustness of the acquired fuzzy controller with comparable result.
文摘A novel approach to control the unpredictable behavior of chaotic systems is presented. The control algorithm is based on fuzzy logic control technique combined with genetic algorithm. The use of fuzzy logic allows for the implementation of human "rule-of-thumb" approach to decision making by employing linguistic variables. An improved Genetic Algorithm (GA) is used to learn to optimally select the fuzzy membership functions of the linguistic labels in the condition portion of each rule, and to automatically generate fuzzy control actions under each condition. Simulation results show that such an approach for the control of chaotic systems is both effective and robust.
文摘目的分析心房颤动抗凝治疗研究的全球现状、热点和变化趋势。方法以Web of Science核心合集为数据来源,检索并收集2006~2020年心房颤动抗凝治疗的相关文献。利用可视化软件CiteSpace和VOSviewer对发文机构、发文期刊及关键词进行共引、共现、突现分析,探索和分析国内外房颤抗凝治疗的研究热点和前沿。结果共检索到相关文献11764篇。近年来房颤抗凝的研究热度逐步升高,已发表的研究集中在北美洲,最重要的研究机构是伯明翰大学。研究热点主要集中在华法林、卒中预防、新型口服抗凝药、抗血栓抗血小板治疗、合并疾病等方面,研究前沿为新型口服抗凝药的研究及心房颤动合并冠心病的抗血栓管理。结论文献计量学研究结果认为全球心房颤动抗凝研究热点是华法林、卒中预防、新型口服抗凝药、抗血栓抗血小板治疗、合并疾病等方面;研究前沿是新型口服抗凝药的研究及心房颤动合并冠心病的抗血栓管理。
