ID 原文 译文
56868 此外,在文本和图像数据集上进行的两个案例分析表明,本文提出的可视分析系统能够进一步带来0.28%～5. 24%的分类准确率提升. In addition, we conducted case studies on text and image data to demonstrate that theproposed visual analysis system can further improve classification accuracy by 0. 28%–5. 24%
56869 自步学习是近年来机器学习领域提出的一种启发于人和动物"由易到难"学习过程的学习机制. Self-paced learning (SPL) is a learning regime, inspired by human and animal learning processes, thatgradually incorporates simple to more complex samples into a training dataset.
56870 尽管自步学习已取得可喜的理论与应用进展,但是当前的自步学习算法仍存在超参数选择的瓶颈问题. Recently, SPL has seen significantresearch progress. However, current SPL algorithms still have critical limitations, such as how to determine theage hyper-parameters (especially the age parameters).
56871 针对该问题当前主要采用一些启发式的手工设计方法或者交叉验证方法,然而此类方法效率很低,缺乏理论性指导,难以推广应用到广泛的实践问题中. Some heuristic strategies based on cross-validation havebeen designed. In addition, setting these parameters manually has been proposed. However, such strategiesare very inefficient, not supported by theoretical evidence, and are very difficult to apply generally in practice.
56872 针对这一挑战性问题,本文提出一种基于元学习机理的自步学习算法,该方法能使自步学习中涉及的超参数以数据驱动的方式自动习得,从而大大减弱了自步学习的这一核心问题. To address these issues, we propose a meta-learning regime for adaptively learning age parameters involved inSPL.
56873 特别地,我们针对3种典型的自步学习实现格式,将所提元学习策略实质性嵌入,通过回归和分类实验验证了所提算法的准确性和泛化性,特别验证了相比于传统超参设置方法的显著优越性. Three types of typical SPL algorithms are integrated into the proposed regime, and their accuracy andgeneralization capability are substantiated through regression and classification experiments, and compared toconventional SPL paradigms that do not include adaptive age parameter tuning.
56874 针对椭圆球面波函数(prolate spheroidal wave functions, PSWFs)信号处理与检测复杂度高的问题,基于具有相同奇偶对称性的PSWFs信号进行线性运算后其奇偶对称性不变的特点,提出了时域严格奇偶对称的PSWFs信号构建方法. Aiming at solving the problem of high signal processing and detection complexity of prolate spheroidal wave functions (PSWFs), we propose a time domain strict parity symmetry PSWFs signal construction method, based on the characteristics of PSWFs with the same parity symmetry after linear operation.
56875 依据相同奇偶对称性的PSWFs信号在半符号周期与整符号周期其正交性相同的特性,采用对奇对称、偶对称信号分组处理,利用半符号周期信号进行检测,降低参与运算的信号数值解点数的思路,提出了基于时域奇偶特性的PSWFs信号检测方法. According to the characteristics that the PSWFs of the same parity symmetry have the same orthogonality in the half-symbol period and the whole symbol period, we propose a PSWFs signal detection method based on the parity characteristics, which groups processing of odd symmetric and even symmetric signals and detects PSWFs signal in the half?symbol period signal to reduce the number of signal solutions for participating in the operation.
56876 理论与数值分析表明,与相干检测相比,所提的信号检测方法能够在不降低系统误码性能的前提下,检测计算复杂度由O(NQ)降低为O(NQ/2),降低约50%. Compared with the coherent detection method, theoretical and numerical analyses show that the proposed signal detection method can reduce the computational complexity from O(NQ) to O(NQ/2) (i. e. , about 50%) without reducing the system error performance.
56877 Apache IoTDB是一个新型的开源时序数据库管理系统. Apache Internet of Things Database (IoTDB) is a new open-source timeseries database managementsystem.