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多分类模型Accuracy, Precision, Recall和F1-score的超级无 …
Web7. f1分数. 但通常,如果想要找到二者之间的一个平衡点,我们就需要一个新的指标:f1分数。f1分数同时考虑了查准率和查全率,让二者同时达到最高,取一个平衡。 f1分数的公式为 = 2*查准率*查全率 / (查准率 + 查全率) … WebMay 11, 2024 · You can see that the F1-score did not change at all (compared to the first example) while the balanced accuracy took a massive hit (decreased by 50%). This shows how F1-score only cares about the points the model said are positive, and the points that actually are positive, and doesn't care at all about the points that are negative. WebNov 15, 2024 · F1 Score是precision和recall整合在一起的判定标准。 在最初的例子中,如果模型只输出‘健康’,而无法成功辨别任何一例‘癌症’病人,那么F1 Score将会被直接归零。 from little things big things grow piano