{
  "split_name": "NanoTouche2020",
  "queries": 49,
  "corpus": 5745,
  "qrels": 932,
  "source_non_positive_qrels": 0,
  "qrels_selection": {
    "qrels_per_query_cap": 100,
    "removed_qrels_over_cap": 0,
    "qrels_cap_policy": "positive qrels are capped per query to the BM25 candidate top_k"
  },
  "bm25": {
    "config": {
      "backend": "bm25s",
      "algorithm": "okapi",
      "source": "computed_bm25s",
      "tokenizer": "regex",
      "tokenizer_name": null,
      "stemmer_algorithm": "english",
      "top_k": 100,
      "k1": 1.5,
      "b": 0.75,
      "show_progress": true,
      "auto_selected": true,
      "auto_detected_language": "sr",
      "auto_detection_language_counts": {
        "sr": 9,
        "hr": 1
      },
      "auto_detection_sample_size": 10
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    "ndcg_at_10": 0.47410659894654067,
    "candidate_coverage": {
      "top_k": 100,
      "query_count": 49,
      "query_with_relevance_count": 49,
      "covered_query_count": 49,
      "query_coverage": 1.0,
      "relevant_count": 932,
      "covered_relevant_count": 932,
      "relevant_coverage": 1.0
    },
    "rebuild_policy": "BM25 candidates were recomputed locally and qrels-positive documents missing from the raw top-k were forced into the final candidate list.",
    "forced_queries": 47,
    "forced_doc_count": 308,
    "missing_positive_doc_count_after_forcing": 0,
    "rebuilt_at_utc": "2026-05-19T01:35:10.573665+00:00"
  }
}