{
  "release": "IrishCore-DiffMask-135M-v1-rc3",
  "base_model": "OpenMed/OpenMed-PII-mLiteClinical-Base-135M-v1",
  "public_references": {
    "rc5": "temsa/OpenMed-mLiteClinical-IrishCorePII-135M-v2-rc5",
    "rc8": "temsa/OpenMed-mLiteClinical-IrishCorePII-135M-v2-rc8"
  },
  "task": "Irish core PII detection and masking in English and Irish Gaelic",
  "coverage": [
    "PPSN",
    "ACCOUNT_NUMBER",
    "BANK_ROUTING_NUMBER",
    "CREDIT_DEBIT_CARD",
    "PASSPORT_NUMBER",
    "POSTCODE",
    "PHONE_NUMBER",
    "EMAIL",
    "FIRST_NAME",
    "LAST_NAME",
    "SWIFT_BIC"
  ],
  "architecture": {
    "family": "DistilBERT-size token-span extractor",
    "diffusion_style_training": true,
    "runtime_diffusion": false,
    "scanner_free": true,
    "validator_free": true,
    "heads": [
      "token_presence_head",
      "typed_start_boundary_head",
      "typed_end_boundary_head"
    ]
  },
  "training_data": {
    "published": [
      "temsa/OpenMed-Irish-CorePII-TrainMix-v1",
      "temsa/OpenMed-Irish-PPSN-Eircode-Spec-v1",
      "joelniklaus/mapa",
      "gretelai/synthetic_pii_finance_multilingual"
    ],
    "local_synthetic_hardening_sets": [
      "irish_dllm_hardening_v1",
      "dllm_gap_patch_v1",
      "dllm_gap_patch_v2",
      "dllm_gap_patch_v3",
      "dllm_gap_patch_v4",
      "dllm_uat_replay_v1",
      "dllm_uat_patch_v3",
      "irish_core_diffmask_v2_mix",
      "irish_core_diffmask_v3_mix",
      "irish_core_diffmask_v4_mix",
      "irish_core_diffmask_v5_mix",
      "irish_core_diffmask_focus_v3"
    ],
    "selection_note": "The published rc3 checkpoint keeps the stronger focusv3 continuation and then publishes a narrower decoder profile tuned for email continuation and q8 passport recovery."
  },
  "training_recipe": {
    "noise_schedule_family": "linear masked denoising schedule",
    "runtime_diffusion": false,
    "train_time_diffusion_steps": 4,
    "start_noise_fraction": 0.65,
    "end_noise_fraction": 0.05,
    "loss": "average BCE losses over token presence and typed boundaries across noised passes"
  },
  "release_selection": {
    "published_checkpoint": "focusv3 continuation with rc3 decoder profile",
    "selection_strategy": "publish the stronger focusv3 checkpoint while retuning the decoder thresholds for the public config",
    "reason": "This preserved rc2-level Irish core quality while improving the UAT replay exact suite and multilingual PPSN coverage."
  },
  "benchmark_caveats": [
    "user_raw_regression_cases_v1 is a legacy PPSN-only negative suite. In rc3 the counted false positive is 0871234567, now intentionally masked as PHONE_NUMBER.",
    "The remaining UAT misses are the second phone in the long Client Identity Services sentence, R93 EC57 inside the longer centre block, and EPStamp4@enterprise.gov.ie."
  ],
  "references": [
    {
      "title": "BERT",
      "url": "https://arxiv.org/abs/1810.04805"
    },
    {
      "title": "DistilBERT",
      "url": "https://arxiv.org/abs/1910.01108"
    },
    {
      "title": "Boundary Smoothing for Named Entity Recognition",
      "url": "https://aclanthology.org/2022.acl-long.490/"
    },
    {
      "title": "SPANNER: Named Entity Re-/Recognition as Span Prediction",
      "url": "https://aclanthology.org/2021.acl-long.558/"
    },
    {
      "title": "LLaDA 2.0: Scaling Up Diffusion Language Models to 100B",
      "url": "https://arxiv.org/abs/2512.15745"
    },
    {
      "title": "Scaling Diffusion Language Models via Adaptation from Autoregressive Models",
      "url": "https://arxiv.org/abs/2410.17891"
    }
  ]
}