rate of defect

Aiming at the defect of gradient-descending arithmetic, such as low-speed of constringency, easily falling into local minimum, an improved approach based on affixation momentum and self-adaptive learning rate is proposed.

针对传统BP算法即梯度下降法，收敛速度慢、容易陷入局部极小值等缺点，提出了基于附加动量法和自适应学习速率的改进方法。

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In order to improve the recognition rate of cold rolled strip surface defects, a new method of feature extraction was investigated for defect images based on Independent Component Analysis ( ICA).

为了提高冷轧带钢表面缺陷识别率，提出基于独立成分分析（ICA）的缺陷图像特征提取方法。

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The incidence rate of neural tube defect ranked the first in the north of Anhui and extremitas malformation occurred commonly in the other parts. The incidence of birth defects, was higher in rural areas ( 16.35 ‰) than in cities ( 7.37 ‰).

农村出生缺陷发生率（16.35‰）高于城市（7.37‰），两者有显著性差异（P0.01）。皖北地区神经管畸形居首位；

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The market rate of interest can not directly substitute the social discount rate for its defect on preference revealing, interest forming, the reward of risk, etc.

而市场利率由于在偏好揭示、利率形成、风险报酬等方面的缺陷，又不能直接替代社会贴现率。

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But the black list detection has lagged behind, and page similarity detection is in the presence of low detection rate of defect.

但是黑名单检测具有滞后性，页面相似度检测存在检出率低的缺陷。

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For now, high defect rate and large noise in the grinding process are the main defects of the domestic polishing machine. As for the polishing head, serious cam concentrated wear, low kinematic accuracy of the swing link and high repair rate are the main flaws.

目前，国产抛光机设备主要存在着抛光磨削加工过程中碎砖现象严重，加工噪音大等缺陷，尤其是抛光磨头更存在凸轮局部磨损现象严重，摆杆运动精度低以及返修率高等问题。

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