[KongchangAI]
Benchmark归一化折损累计增益 / Normalized Discounted Cumulative Gain

nDCG@10

A ranking quality evaluation metric commonly used in information retrieval. It measures how closely the top 10 results returned by a retriever approach an ideal ranking, with values from 0 to 1.

Timeline (last 90 days)

Nov 4

In stress tests with isolated targets, just five query-targeted documents per query can reduce the nDCG@10 of classic retrievers by 40.2% to 61.5%.

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Nov 4

nDCG@10 is normalized Discounted Cumulative Gain, which measures how close the top 10 retrieval results are to the ideal ranking, ranging from 0 to 1, with higher values indicating that the top-ranked results are closer to the ideal state.

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Oct 12

On the nDCG@10 ranking metric, SAFE-QE shows no statistically significant difference from generative expansion and corpus-guided expansion.

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