Matching primary charge explains 99.2% of the NDCG@10 gap between BM25 and best systems on LeCaRDv2 because benchmark relevance is defined by charge-encoding elements.
In: Proceedings of the 47th In- ternational ACM SIGIR Conference on Research and Development in Infor- mation Retrieval
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An LLM agent self-evolves a set of query-rewriting rules that raise BM25 performance on the LeCaRD-v2 legal retrieval benchmark above human-designed and greedy baselines.
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Charge as a Construct-Validity Factor in Chinese Legal Case Retrieval: A Cross-Benchmark Audit
Matching primary charge explains 99.2% of the NDCG@10 gap between BM25 and best systems on LeCaRDv2 because benchmark relevance is defined by charge-encoding elements.