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。