Results on retrieval ranking: baseline cosine top-K: NDCG@10 0.5123, Recall@10 0.6924 mem0 additive fusion: NDCG@10 0.4903, Recall@10 0.6625 rrf(cosine, BM25): NDCG@10 0.5196, Recall@10 0.6989 rrf(cosine, cos2, BM25): NDCG@10 0.5278, Recall@10 0….