CoHyDE: Iterative Co-Training of LLM Rewriter & Dense Encoder for Tool Retrieval

In three linesCoHyDE iteratively co-trains a dense encoder and LLM rewriter to improve tool retrieval over large API catalogs. On ToolBench (~10k tools), three rounds gain +2.5 pp NDCG@5 on standard queries and +6.3 pp on vague queries, outperforming single-component baselines.

Summary generated by Claude — human-verified