China Development Bank, or CDB for short, was a policy-based financial institution founded in March 1994, which is a wholly state-owned commercial bank directly under the State Council. In December 2008, CDB was restr...China Development Bank, or CDB for short, was a policy-based financial institution founded in March 1994, which is a wholly state-owned commercial bank directly under the State Council. In December 2008, CDB was restructured into China Development Bank Co., Ltd. Ever since its foundation, CDB dedicated itself to the comprehensive development of financial, economic and展开更多
越来越多的物联网数据呈现高维度特征,针对目前传感器数据异常检测算法对高维数据在线检测的困难,提出一种基于深度信念网络的高维传感器数据异常检测算法。首先利用深度信念网络对高维数据进行特征提取,降低原始数据维度,再对降维后的...越来越多的物联网数据呈现高维度特征,针对目前传感器数据异常检测算法对高维数据在线检测的困难,提出一种基于深度信念网络的高维传感器数据异常检测算法。首先利用深度信念网络对高维数据进行特征提取,降低原始数据维度,再对降维后的数据进行异常检测。在检测过程中将QSSVM(Quarter-Sphere Support Vector Machine)与滑动窗口模型相结合,实现了在线式的异常检测。通过在四组真实传感器数据上的大量实验,与先前的异常检测算法做了对比,实验结果表明,新算法相对于OCSVM(One-Class Support Vector Machine)仅利用原有算法50%的计算时间,将检测准确度提高了约20%。展开更多
文摘China Development Bank, or CDB for short, was a policy-based financial institution founded in March 1994, which is a wholly state-owned commercial bank directly under the State Council. In December 2008, CDB was restructured into China Development Bank Co., Ltd. Ever since its foundation, CDB dedicated itself to the comprehensive development of financial, economic and
文摘越来越多的物联网数据呈现高维度特征,针对目前传感器数据异常检测算法对高维数据在线检测的困难,提出一种基于深度信念网络的高维传感器数据异常检测算法。首先利用深度信念网络对高维数据进行特征提取,降低原始数据维度,再对降维后的数据进行异常检测。在检测过程中将QSSVM(Quarter-Sphere Support Vector Machine)与滑动窗口模型相结合,实现了在线式的异常检测。通过在四组真实传感器数据上的大量实验,与先前的异常检测算法做了对比,实验结果表明,新算法相对于OCSVM(One-Class Support Vector Machine)仅利用原有算法50%的计算时间,将检测准确度提高了约20%。