Metric of Machine Learning
Accuracy
from sklearn.metrics import accuracy_score
accuracy = accuracy_score(y_test, y_pred)
A confusion matrix is not a metric in machine learning, but it is a useful tool for understanding the performance of a classification model and calculating evaluation metrics.
Precision
Recall
F1-score
ROC-AUC score
Mean Squared Error
Root Mean Squared Frror
R-squared score
Log loss
Metrics of Knowledge Graph Embedding:
HITS@1
HITS@3
HITS@10
HIT（Hit Rate，HR）命中率：它反映的是在推荐序列中是否包含了用户真正点击的item。
MR
MRR（Mean Reciprocal Rank,MRR）平均倒数排名，该指标反应的是我们找到的这些item是否摆在用户更明显的位置，强调位置关系，顺序性。
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