Normalized discounted cumulative gain
A ranked-retrieval metric that gives more credit to highly relevant results near the top.
What Normalized discounted cumulative gain means
Its value depends entirely on the relevance judgments and cutoff used.
Terms this definition uses
Related terms in Retrieval engineering
How pages become chunks, vectors and candidates inside an answer engine, and why being retrieved is not being cited.
Corpus · Document ingestion · Data connector · Parsing · OCR · Layout-aware parsing · Semantic chunking · Fixed-size chunking · Chunk overlap · Parent-child retrieval · Metadata filtering · Vector database · Vector index · Sparse vector · Dense vector · Cosine similarity · Dot-product similarity · Approximate nearest neighbor · HNSW · Top-k · Retrieval recall · Retrieval precision · Mean reciprocal rank · Relevance score · Candidate generation · Query rewriting · Query expansion · HyDE · Multi-query retrieval · Reciprocal rank fusion · Late interaction · Lexical retrieval · Semantic search · Exact-match retrieval · Freshness boosting · Authority weighting · Source diversity · Deduplication · Near-duplicate detection · Semantic cache · Retrieval latency · Retrieval cutoff · Citation mapping · Answer synthesis
Questions about Normalized discounted cumulative gain
What is Normalized discounted cumulative gain?
A ranked-retrieval metric that gives more credit to highly relevant results near the top.
Which area of the glossary does Normalized discounted cumulative gain belong to?
Retrieval engineering: How pages become chunks, vectors and candidates inside an answer engine, and why being retrieved is not being cited.
← Mean reciprocal rank · Relevance score →
See it in the full glossary · 772 terms across 19 areas.
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