sklearn.metrics.f1_score
#Classification_metrics_(sklearn)
https://scikit-learn.org/stable/modules/generated/sklearn.metrics.f1_score.html
F1のmean/macro/micro
sklearn.metrics.fbeta_score
の特殊な場合と理解
実装でも
beta=1でfbeta_scoreを呼び出す
https://github.com/scikit-learn/scikit-learn/blob/1.3.0/sklearn/metrics/_classification.py#L1238-L1247
式の参考
https://ja.wikipedia.org/wiki/F値_(評価指標)