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关于f1值的计算有个疑问
你好，看了下df.csv的表，发现当pred_true为0的时候，也就是True Positive为0吧，按照F1score的计算方式，不应该是precision和recall都为0吗，那么F1score应该也为0吧，为什么还会是0.49呢？希望大佬有空能够解答下我这个小白的问题，万分感激！
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