针对传统的增量式支持向量机（Incremental Support Vector Machine,ISVM）在处理数据集时易受数据噪声和学习过程中振荡问题影响的缺点,将改进的核函数U-RBF和构造备用集的同心圆方法相结合,提出了基于备用集的增量式支持向量机（Reser...针对传统的增量式支持向量机（Incremental Support Vector Machine,ISVM）在处理数据集时易受数据噪声和学习过程中振荡问题影响的缺点,将改进的核函数U-RBF和构造备用集的同心圆方法相结合,提出了基于备用集的增量式支持向量机（Reserved Set-Incremental Support Vector Machine,RS-ISVM）方法。该方法首先将特征属性的均值和均方差值嵌入到核函数RBF中,并通过同心圆方法将后续学习过程中最有可能成为支持向量的样本划入备用集。入侵检测实验证明RS-ISVM能够降低学习过程的振荡现象,提高了学习的速度,有非常好的性能和可靠性。展开更多
Objective： To analyze postoperative mobility after cardiac surgery. Methods： Observational study in patients, aged 〉 18 years, undergoing myocardial revascularization and/or valvular heart surgery, hospitalized in ...Objective： To analyze postoperative mobility after cardiac surgery. Methods： Observational study in patients, aged 〉 18 years, undergoing myocardial revascularization and/or valvular heart surgery, hospitalized in a Brazil hospital. The data collection took place between April 2016 and March 2017. On admission to the ward, patients received a calibrated pedometer. They were asked to use the device during five consecutive days, yet only three days of full use were analyzed. Results： Analyzed were data of 87 individuals with mean age of 58.70 ~ 12.59 years, 52 （59.8%） of them were males. Regarding surgery, 53 （60.9%） underwent myocardial revascularization. The median number of steps was 738 （185-1,557）, which showed a weak and inverse correlation with the length of stay in the intensive care unit （r = -0.3/p = 0.02）, however, it was not statistically significant when related to clinical and surgical data. Male patients had a better mobility when compared to patients of the female sex （p = 0.04）. Conclusions： Individuals who had a longer stay in the intensive care unit, as well as females, had a lower mobility in the ward. The mobility did not show a relation with intra- and postoperative factors.展开更多
In this paper, the authors introduce and study the concept of （1, 2）^＊-generalized closed sets with respect to an ideal in a bitopological space. Also, some characterizations and applications of（1, 2）^＊-generali...In this paper, the authors introduce and study the concept of （1, 2）^＊-generalized closed sets with respect to an ideal in a bitopological space. Also, some characterizations and applications of（1, 2）^＊-generalized closed sets are given.展开更多
文摘针对传统的增量式支持向量机（Incremental Support Vector Machine,ISVM）在处理数据集时易受数据噪声和学习过程中振荡问题影响的缺点,将改进的核函数U-RBF和构造备用集的同心圆方法相结合,提出了基于备用集的增量式支持向量机（Reserved Set-Incremental Support Vector Machine,RS-ISVM）方法。该方法首先将特征属性的均值和均方差值嵌入到核函数RBF中,并通过同心圆方法将后续学习过程中最有可能成为支持向量的样本划入备用集。入侵检测实验证明RS-ISVM能够降低学习过程的振荡现象,提高了学习的速度,有非常好的性能和可靠性。
文摘Objective： To analyze postoperative mobility after cardiac surgery. Methods： Observational study in patients, aged 〉 18 years, undergoing myocardial revascularization and/or valvular heart surgery, hospitalized in a Brazil hospital. The data collection took place between April 2016 and March 2017. On admission to the ward, patients received a calibrated pedometer. They were asked to use the device during five consecutive days, yet only three days of full use were analyzed. Results： Analyzed were data of 87 individuals with mean age of 58.70 ~ 12.59 years, 52 （59.8%） of them were males. Regarding surgery, 53 （60.9%） underwent myocardial revascularization. The median number of steps was 738 （185-1,557）, which showed a weak and inverse correlation with the length of stay in the intensive care unit （r = -0.3/p = 0.02）, however, it was not statistically significant when related to clinical and surgical data. Male patients had a better mobility when compared to patients of the female sex （p = 0.04）. Conclusions： Individuals who had a longer stay in the intensive care unit, as well as females, had a lower mobility in the ward. The mobility did not show a relation with intra- and postoperative factors.
文摘In this paper, the authors introduce and study the concept of （1, 2）^＊-generalized closed sets with respect to an ideal in a bitopological space. Also, some characterizations and applications of（1, 2）^＊-generalized closed sets are given.
