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求解离子通道开关持续时间概率密度函数的Q-矩阵法 被引量:1
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作者 刘向明 林家瑞 《中南民族学院学报(自然科学版)》 2001年第4期48-51,共4页
系统地阐述了离子通道门控动力学中求解任意马尔科夫门控模型的开关持续时间概率密度函数的 Q-矩阵法的理论基础 ,推导了相应的计算公式 ,并用此法求解了 PC12细胞 K+离子通道门控模型的开关持续时间的概率密度函数 (pdf)
关键词 马尔科夫模型 q-矩阵法 PC12细胞 离子通道 开关持续时间 概率密度函数 生物教学
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INCREMENTAL AUGMENT ALGORITHM BASED ON REDUCED Q-MATRIX 被引量:2
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作者 杨淑群 丁树良 丁秋林 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2010年第2期183-189,共7页
Reduced Q-matrix (Qr matrix) plays an important role in the rule space model (RSM) and the attribute hierarchy method (AHM). Based on the attribute hierarchy, a valid/invalid item is defined. The judgment method... Reduced Q-matrix (Qr matrix) plays an important role in the rule space model (RSM) and the attribute hierarchy method (AHM). Based on the attribute hierarchy, a valid/invalid item is defined. The judgment method of the valid/invalid item is developed on the relation between reachability matrix and valid items. And valid items are explained from the perspective of graph theory. An incremental augment algorithm for constructing Qr matrix is proposed based on the idea of incremental forward regression, and its validity is theoretically considered. Results of empirical tests are given in order to compare the performance of the incremental augment algo-rithm and the Tatsuoka algorithm upon the running time. Empirical evidence shows that the algorithm outper-forms the Tatsuoka algorithm, and the analysis of the two algorithms also show linear growth with respect to the number of valid items. Mathematical models with 10 attributes are built for the two algorithms by the linear regression analysis. 展开更多
关键词 reduced q-matrix(Qr matrix) valid items incremental augment algorithm linear regression
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