不是一般性,我们在这里讨论二分类问题中正例个数远远少于反例的情形。常见的处理非平衡数据集的办法主要有: 1.阈值移动(Threshold Moving): 通常我们预测类别的方法是学习得到正例概率$P$,如果:\begin{equation}\frac{P}{1-P}> 1\end{equation}则我们判断样本为正,否则为负。但是对于“代价敏感模型”(cost s...
Threshold-moving 阈值移动文献(pubmed) 赞助商链接以下为句子列表:英文: Study on Sweetness Threshold中文: 甜度味觉阈值研究 英文: STUDIES ON VENTILATION ANAEROBIC THRESHOLD, LACTATE THRESHOLD AND MAXIMAL OXYGEN UPTAKE OF HIGHLAND WOMEN ROAD CYCLISTS中文: 高原(2260m)女子公路自行车运动员的通气无氧阈、乳酸阈...
1) Moving Rate Threshold 移动速率阈值2) Rate-value 速率阈值3) threshold velocity of blasting vibration 振动速度阈值 1. According to the theory of stress wave in solid matter a theoretical verification and validity of the threshold velocity of blasting vibration for rock slope are discussed,The...
【Key words】 Infectious Diseases;Moving percentile method;Threshold;Outbreak detection 为提高基层疾病预防控制机构的传染病暴发早 期发现能力 ,中国疾病预防控制 中心(CDC)采用法 定传染病监测信息报告管理系统的监测数据 ,开展 了传染病暴发 的早期预警技术研究 。基于移动百 ...
Number of outbreaks and time to detection were recorded and the amount of signals acted as the indicators for determining the optimal threshold of moving percentile method in CIDARS. The optimal threshold for bacillary and amebic dysentery was P(50). For non-cholera infectious diarrhea, dysentery,...
Abstract: In order to improve the accuracy, efficiency and adaptability of point cloud filtering algorithm, a hierarchical threshold adaptive for point cloud filter algorithm of moving surface fitting was proposed.Firstly, the noisy points are removed by using a statistic histogram method.Secondly, the...
KEYWORDS: Influenza;Threshold;Intensity;Moving epidemic method;Cross-validation procedure Corresponding author: Yang Peng, Email: moc.361cdcgnepgnay FUNDING: Beijing Talents Fund(2014000021223ZK36) Capital’s Research Fund for Health Development(2018-2-1013) COPYRIGHTS: Copyright by Chinese Medical ...
基金 北京市优秀人才培养资助青年拔尖个人项目(2014000021223ZK36) 首都卫生发展科研专项(2018-2-1013)。 关键词 流感 阈值 强度 移动流行区间法 交叉验证 Influenza Threshold Intensity Moving epidemic method Cross-validation procedure 分类号 R181 [医药卫生—流行病学] R51 [医药卫生—内科学] 相关...
[Application of moving epidemic method in establishing epidemic intensity threshold of hand, foot, and mouth disease in southern China]. ≤5岁儿童手足口病周发病率,使用移动流行区间法(MEM)计算2018-2019年南方地区各省市强度阈值,评价手足口病流行强度.结果:南方地区2018-2019年第1个流行季中,≤5... T...
while optimal sensitivity CIDARSwerestillthesame.Conclusionthethresholddifierentdiseasesand for Optimizing by provinces MPMinCIDARScouldreducethe of number while thesame andtimeto signals maintainingsensitivity detection. 【Key Communicable words】 diseases;Diseaseoutbreaks;Models,statistical; Moving method ...