理解accuracy/precision_score、micro/macro 1、accuracy即我们通常理解的准确率,计算的时候是指在预测值pred与目标值target之间重叠的部分的大小除以pred的大小(或target的大小,因为sklearn要求pred与target大小必须一致)。 比如 target=[2,2,2,3,2] pred=[2,2,1,3,4] 此时重叠的部分为pred[0]、pred[1]、pr...
Hutchinson, Harry
商标名称 MICRO ACCURACY 国际分类 第09类-科学仪器 商标状态 商标注册申请 申请/注册号 33296705 申请日期 2018-09-04 申请人名称(中文) 广东妙机精密科技股份有限公司 申请人名称(英文) - 申请人地址(中文) 广东省东莞市道滘镇万道路2号华科城创新岛产业孵化园9栋10、11、12号 申请人地址(英文) - 初审公告...
在测试集每类数量相同的情况下,多分类度量指标Accuracy=macro-Recall=micro-F1;在测试集每类数量不相同的情况下,多分类度量指标Accuracy= micro-F1。 1、二分类混淆矩阵及度量指标 2、多分类混淆矩阵及度量指标 3、计算三分类度量指标 4、证明结论
在多分类的时候,用sklearn的classification_report会发现有的会打印出micro avg,有的则是accuracy。 例子展示 例子1 y_pred = [1, 1, 2] y_true = [1, 1, 1] print(classification_report(y_true, y_pred, labels=[1, 2])) precision recall f1-score support 1 1.00 0.67 0.80 3 2 0.00 0.00...
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6.Test current accuracy: ± 5% 7.Measurement time: fast, 10~60 seconds, continuous testing optional 8.Special testing line: resistance<20m Ω 9.Charging power supply: Input 180V~240VAC, 50Hz/60Hz, 10.Data storage: Store 100 sets of measurement dat...
A Swiss company with a branch in North Carolina has introduced a CNC waterjet cutting machine with a positioning accuracy within 1 micrometer, about 10 times tighter than conventional waterjet cutting machines. The company, Waterjet AG, based in Aarwangen, says the cutting accuracy of the machine...
Micro-encoder based on higher-order diffracted light interference A micro-encoder based on higher-order diffracted light interference has been developed for use in high-precision positioning. It uses ±3-order diffracted ... E Higurashi,R Sawada - 《Journal of Micromechanics & Microengineering》 被...
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