由于现有的多数概念演化检测方法本质上是基于监督学习,且通常用于解决一个时间段内仅出现一个新类,不能处理数据流中的类消失和类循环任务。为此,提出一种基于弱监督集成的概念演化自适应检测方法(AD_WE:Adaptive Detection Method for...由于现有的多数概念演化检测方法本质上是基于监督学习,且通常用于解决一个时间段内仅出现一个新类,不能处理数据流中的类消失和类循环任务。为此,提出一种基于弱监督集成的概念演化自适应检测方法(AD_WE:Adaptive Detection Method for Concept Evolution Based on Weakly Supervised Ensemble)。该方法利用弱监督集成策略构建集成学习器,对数据块中的训练样本进行局部预测,在此基础上,基于局部密度和相对距离识别特征空间中具有较强内聚性的相似数据并对其聚类,对聚类结果进行相似度比较,实现新类实例的检测及不同新类的区分;同时根据数据随时间变化特征建立动态衰减模型,及时消除消失类,并通过相似度比较检测循环类。实验表明,所提方法能对概念演化做出及时响应,可有效识别消失类和循环类,提高学习器的泛化性能。展开更多
In this paper, we analyze the enthalpy, enthalpy energy density, thermodynamic volume, and the equation of state of a modified white hole. We obtain new possible mathematical connections with some sectors of Number Th...In this paper, we analyze the enthalpy, enthalpy energy density, thermodynamic volume, and the equation of state of a modified white hole. We obtain new possible mathematical connections with some sectors of Number Theory, Ramanujan Recurring Numbers, DN Constant and String Theory, that enable us to extract the quantum geometrical properties of these thermodynamic equations and the implication to the quantum vacuum spacetime geometry of our early universe as they act as the constraints to the nature of quantum gravity of the universe.展开更多
文摘由于现有的多数概念演化检测方法本质上是基于监督学习,且通常用于解决一个时间段内仅出现一个新类,不能处理数据流中的类消失和类循环任务。为此,提出一种基于弱监督集成的概念演化自适应检测方法(AD_WE:Adaptive Detection Method for Concept Evolution Based on Weakly Supervised Ensemble)。该方法利用弱监督集成策略构建集成学习器,对数据块中的训练样本进行局部预测,在此基础上,基于局部密度和相对距离识别特征空间中具有较强内聚性的相似数据并对其聚类,对聚类结果进行相似度比较,实现新类实例的检测及不同新类的区分;同时根据数据随时间变化特征建立动态衰减模型,及时消除消失类,并通过相似度比较检测循环类。实验表明,所提方法能对概念演化做出及时响应,可有效识别消失类和循环类,提高学习器的泛化性能。
文摘In this paper, we analyze the enthalpy, enthalpy energy density, thermodynamic volume, and the equation of state of a modified white hole. We obtain new possible mathematical connections with some sectors of Number Theory, Ramanujan Recurring Numbers, DN Constant and String Theory, that enable us to extract the quantum geometrical properties of these thermodynamic equations and the implication to the quantum vacuum spacetime geometry of our early universe as they act as the constraints to the nature of quantum gravity of the universe.