sklearn.metrics.dcg_score¶
- sklearn.metrics.dcg_score(y_true, y_score, k=5)[source]¶
Discounted cumulative gain (DCG) at rank K.
Parameters: y_true : array, shape = [n_samples]
Ground truth (true relevance labels).
y_score : array, shape = [n_samples]
Predicted scores.
k : int
Rank.
Returns: score : float
References
[R214] Wikipedia entry for the Discounted Cumulative Gain