machine learning key word (part two)
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machine learning key word (part two)
error rate:错误率accuracy:精度error:误差training error:训练误差(或“empirical error:经验误差”)test error:测试误差generalization error:泛化误差overfitting:过拟合underfitting:欠拟合model selection:模型选择hold-out:留出法sampling:采样stratified sampling:分层采样cross validation:交叉验证k-fold cross validation:k折交叉验证validation set:验证集Leave-One-Out:留一法(简称“LOO”)bootstrapping:自助法bootstrap sampling:自助采样out-of-bag estimate:包外估计parameter tunning:调参performance measure:性能度量mean squared error:均方误差precision:查准率,亦称“准确率”recall:查全率,亦称“召回率”true positive:真正例True Positive Rate:真正例率(简称"TPR")false positive:假正例False Positive Rate:假正例率(简称"FPR")true negative:真反例false negative:假反例confusion matrix:混淆矩阵Break-Evendors Point:平衡点(简称“BEP”)threshold:阈值cut point:截断点ROC:受试者工作曲线AUC:Area under ROC Curveloss:损失unequal cost:非均等代价cost-sensitive:代价敏感hypothesis test:假设检验binomial test:二项测试confidence:置信度two-tailed:双边t-test:t检验paired t-test:成对t检验contingency table:列联表bias-variance decomposition:偏差-方差分解bias-variance dilemma:偏差-方差窘境cost-sensitive learning:代价敏感学习harmonic mean:调和平均
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