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meld
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{
  "model_type": "meld",
  "architecture": "MeldV7Detector",
  "version": "v8",
  "backbone": "jhu-clsp/ettin-encoder-1b",
  "backbone_hidden_size": 1792,
  "style_rank": 48,
  "n_human_anchors": 8,
  "n_families": 7,
  "families": [
    "openai_gpt",
    "anthropic_claude",
    "google_gemini_gemma",
    "meta_llama",
    "mistral",
    "qwen",
    "others"
  ],
  "n_ops": 6,
  "ops": [
    "generate",
    "polish_formalize",
    "paraphrase_rewrite",
    "humanize_mimic",
    "summarize",
    "expand"
  ],
  "rho": 0.25,
  "tau_agg": 1.0,
  "max_length": 2048,
  "backbone_max_length": 8192,
  "cap_tokens": 16384,
  "null_reduction": "max",
  "score_offsets": {
    "overall": {
      "fpr_0.01": 2.008819580078125,
      "fpr_0.05": -0.4406634569168091,
      "fpr_0.1": -1.7987771034240723
    },
    "n_human": 22190,
    "strata": {
      "consumer_opinion": {
        "n": 2490,
        "fpr_0.01": 1.5814101696014404,
        "fpr_0.05": -0.3111945688724518,
        "fpr_0.1": -1.286853551864624
      },
      "creative": {
        "n": 2500,
        "fpr_0.01": 0.45580801367759705,
        "fpr_0.05": -2.677462100982666,
        "fpr_0.1": -3.904209613800049
      },
      "general_web": {
        "n": 2500,
        "fpr_0.01": 1.5588948726654053,
        "fpr_0.05": -1.170554280281067,
        "fpr_0.1": -2.748509168624878
      },
      "news": {
        "n": 2500,
        "fpr_0.01": 2.726632833480835,
        "fpr_0.05": 1.2478327751159668,
        "fpr_0.1": 0.1839705854654312
      },
      "peer_review": {
        "n": 2500,
        "fpr_0.01": -4.437159061431885,
        "fpr_0.05": -5.963565826416016,
        "fpr_0.1": -6.306556701660156
      },
      "reference_howto": {
        "n": 2500,
        "fpr_0.01": -1.06562077999115,
        "fpr_0.05": -3.6017556190490723,
        "fpr_0.1": -4.638963222503662
      },
      "scientific_paper": {
        "n": 2500,
        "fpr_0.01": 2.3307437896728516,
        "fpr_0.05": 0.10951182246208191,
        "fpr_0.1": -1.107822299003601
      },
      "social_qa_chat": {
        "n": 2490,
        "fpr_0.01": 2.3400607109069824,
        "fpr_0.05": -0.013203833252191544,
        "fpr_0.1": -0.9907770752906799
      },
      "student_essay": {
        "n": 2210,
        "fpr_0.01": 3.0058677196502686,
        "fpr_0.05": 0.2508733570575714,
        "fpr_0.1": -1.1999095678329468
      }
    }
  },
  "released_step": 15629,
  "checkpoint_sha12": "2d6ec6314168",
  "scoring_contract": {
    "schema": "meld-canonical-scorer-v1",
    "window_tokens": 2048,
    "content_tokens_per_window": 2046,
    "window_overlap": "none",
    "fresh_special_tokens_per_window": true,
    "special_tokens_excluded": true,
    "precision": "fp32",
    "autocast": "disabled",
    "input_cap_tokens": 16384,
    "pooling": "top_quantile_mean_over_all_windows_jointly",
    "rho": 0.25
  }
}