autointent.metrics.retrieval_ndcg_intersecting#
- autointent.metrics.retrieval_ndcg_intersecting(query_labels, candidates_labels, k=None)#
Calculate the Normalized Discounted Cumulative Gain (NDCG) at position k for the intersecting labels.
NDCG at position
for intersecting labels is calculated as:where:
is the Discounted Cumulative Gain for the intersecting labels at position , is the Ideal Discounted Cumulative Gain for the intersecting labels at position .
Intersecting relevance is determined by checking whether the query labels overlap with the candidate labels. NDCG values are normalized between 0 and 1, where 1 indicates the ideal ranking.
- Parameters:
query_labels (autointent.metrics.custom_types.LABELS_VALUE_TYPE) – For each query, this list contains its class labels
candidates_labels (autointent.metrics.custom_types.CANDIDATE_TYPE) – For each query, these lists contain class labels of items ranked by a retrieval model (from most to least relevant)
k (int | None) – Number of top items to consider for each query
- Returns:
Score of the retrieval metric
- Return type: