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        "D9",
        "D2"
      ],
      "reranked": [
        "D1",
        "D9",
        "D3",
        "D2",
        "D4"
      ],
      "dense_scores": {
        "D1": 0.386056125164032,
        "D3": 0.3707321882247925,
        "D2": 0.34013333916664124,
        "D9": 0.33381885290145874,
        "D4": 0.09391427040100098,
        "D5": 0.021265041083097458,
        "D7": 0.0029186010360717773,
        "D8": -0.01489977166056633,
        "D6": -0.02345743402838707
      },
      "cross_encoder_scores": {
        "D1": -1.6232635974884033,
        "D4": -11.024877548217773,
        "D3": -2.2420878410339355,
        "D9": -1.774195909500122,
        "D2": -4.14900016784668
      },
      "metrics_at_3": {
        "bm25": {
          "recall": null,
          "mrr": null,
          "ndcg": null
        },
        "dense": {
          "recall": null,
          "mrr": null,
          "ndcg": null
        },
        "rrf": {
          "recall": null,
          "mrr": null,
          "ndcg": null
        },
        "reranked": {
          "recall": null,
          "mrr": null,
          "ndcg": null
        }
      },
      "latency_ms": {
        "bm25_with_index": 0.29679201543331146,
        "dense_query": 2.5288750184699893,
        "rrf": 0.006749993190169334,
        "rerank": 10.323834023438394
      },
      "unjudged_no_answer": true
    }
  ],
  "corpus_encoding_ms": 29.36154103372246,
  "gates": {
    "invalid_fact_rejected": true,
    "stale_translation_rejected": true,
    "correct_translation_passes": true,
    "claim_labels": [
      {
        "id": "C1",
        "text": "AX-220 requires 220 V supply.",
        "sources": [
          "D1"
        ],
        "human_label": "supported",
        "reason": "Exact model, quantity and condition agree with D1."
      },
      {
        "id": "C2",
        "text": "AX-220 works on US 110 V with a plug adapter.",
        "sources": [
          "D1",
          "D9"
        ],
        "human_label": "contradicted",
        "reason": "D9 explicitly says a plug change does not convert voltage."
      },
      {
        "id": "C3",
        "text": "AX-220 has a five-year warranty.",
        "sources": [
          "D1"
        ],
        "human_label": "insufficient",
        "reason": "No warranty period is given. A valid link does not support this statement."
      },
      {
        "id": "C4",
        "text": "AX-220 has a 20 L tank and works outdoors.",
        "sources": [
          "D1"
        ],
        "human_label": "partly-supported",
        "reason": "The capacity is supported but the outdoor condition is contradicted. Split into atomic claims."
      }
    ],
    "limitation": "Claim labels are author-reviewed annotations, not automated entailment or truth verification."
  },
  "statistics": {
    "questions": 6,
    "runs_per_period": 18,
    "before_rate": 0.16666666666666666,
    "after_rate": 0.5,
    "paired_change": 0.3333333333333333,
    "paired_question_bootstrap_95": [
      0.0,
      0.6666666666666666
    ],
    "bootstrap_seed": 20261002,
    "bootstrap_replicates": 10000,
    "independent_example": {
      "successes": 2,
      "n": 10,
      "wilson_95": [
        0.05668215145437519,
        0.5098375284633583
      ]
    },
    "limitation": "Synthetic repeated records. Resample paired questions, not individual repeated runs. Six clusters are too few for reliable real-world inference. No causal claim."
  },
  "chunking": {
    "fixed_character_window": 64,
    "fixed": [
      "AX-220 extraction cleaner. Supply 220 V only. Tank 20 L. Indoor ",
      "sealed hard floors. Do not use outdoors or on untreated wood. Ma",
      "nual v1, section electrical. No US 110 V compatibility claim."
    ],
    "structured": [
      "AX-220 | electrical | Supply 220 V only. | D1 | v1",
      "AX-220 | use | Indoor sealed hard floors. Do not use outdoors or on untreated wood. | D1 | v1",
      "AX-220 | tank | Tank 20 L. | D1 | v1"
    ],
    "comparisons": [
      {
        "window": 32,
        "chunks": [
          "AX-220 extraction cleaner. Suppl",
          "y 220 V only. Tank 20 L. Indoor ",
          "sealed hard floors. Do not use o",
          "utdoors or on untreated wood. Ma",
          "nual v1, section electrical. No ",
          "US 110 V compatibility claim."
        ],
        "standalone_checks": {
          "voltage": false,
          "capacity": false,
          "usage_limits": false
        }
      },
      {
        "window": 64,
        "chunks": [
          "AX-220 extraction cleaner. Supply 220 V only. Tank 20 L. Indoor ",
          "sealed hard floors. Do not use outdoors or on untreated wood. Ma",
          "nual v1, section electrical. No US 110 V compatibility claim."
        ],
        "standalone_checks": {
          "voltage": true,
          "capacity": true,
          "usage_limits": false
        }
      },
      {
        "window": 128,
        "chunks": [
          "AX-220 extraction cleaner. Supply 220 V only. Tank 20 L. Indoor sealed hard floors. Do not use outdoors or on untreated wood. Ma",
          "nual v1, section electrical. No US 110 V compatibility claim."
        ],
        "standalone_checks": {
          "voltage": true,
          "capacity": true,
          "usage_limits": true
        }
      }
    ],
    "structured_checks": {
      "voltage": true,
      "capacity": true,
      "usage_limits": true
    },
    "note": "Standalone checks require the model and full, author-selected phrases in one chunk. This literal check is not semantic entailment or retrieval/generation evaluation. Structured chunks are explicitly authored, not an automatic document parser. No universal web paragraph length is implied."
  },
  "limitations": [
    "Nine synthetic English records; ten authored queries, including one Chinese stress query and one no-answer query.",
    "No-answer query is excluded from ranking averages, never treated as perfect recall.",
    "Author labels are not independent annotator consensus. No held-out tuning or external validity.",
    "CPU timings are single-run observations. Index construction is included only for lexical timing; no speed comparison claim.",
    "English embedding/reranking models are not validated as Chinese search engines. A nearest neighbour is not a factual answer."
  ]
}