{
 "schema_version": "1.7.0",
 "id": "x_NXMC-2019-0004",
 "modified": "2026-10-19T02:33:38.839Z",
 "published": "2026-10-18T09:00:52.565Z",
 "summary": "roberta-large: structural change at 5cae447 (2019-09-26)",
 "details": "roberta-large: derived parameters 354.3M to 354.3M (+2.0K, +0.00 GB of bf16 weights); context window 512 to 514 tokens (2019-09-26).\n\nRepository: https://huggingface.co/FacebookAI/roberta-large. Revisions from 5cae4475acf96517d6c1e33b4bf8f9444539988d onward carry this change; a pin at f0c702d5c384ae53c3a7f7eec945c70c93526a32 or earlier does not.\n\nChanged keys:\n- max_position_embeddings: 512 -> 514 (structural)\n\nThis record says what the change does mechanically. It is not a report that anything broke for anyone.",
 "affected": [
  {
   "ranges": [
    {
     "type": "GIT",
     "repo": "https://huggingface.co/FacebookAI/roberta-large",
     "events": [
      {
       "introduced": "5cae4475acf96517d6c1e33b4bf8f9444539988d"
      }
     ]
    }
   ],
   "database_specific": {
    "model": "FacebookAI/roberta-large",
    "previous_revision": "f0c702d5c384ae53c3a7f7eec945c70c93526a32"
   }
  }
 ],
 "references": [
  {
   "type": "INTRODUCED",
   "url": "https://huggingface.co/FacebookAI/roberta-large/commit/5cae4475acf96517d6c1e33b4bf8f9444539988d"
  },
  {
   "type": "PACKAGE",
   "url": "https://huggingface.co/FacebookAI/roberta-large"
  },
  {
   "type": "WEB",
   "url": "https://www.neurarch.com/changes-feeds/models/FacebookAI/roberta-large.html"
  }
 ],
 "database_specific": {
  "source": "neurarch model change tracker",
  "model": "FacebookAI/roberta-large",
  "kind": "structural",
  "classes": [
   "structural"
  ],
  "changed_keys": [
   {
    "file": "config",
    "key": "max_position_embeddings",
    "before": 512,
    "after": 514,
    "class": "structural"
   }
  ],
  "impact": {
   "memory": true,
   "serving": true,
   "tokenizer": false,
   "licence": null
  },
  "breaking": true,
  "breaking_rule": "https://www.neurarch.com/changes-feeds/advisories/index.json#breaking_rule",
  "consequence": {
   "params": {
    "before": 354255872,
    "after": 354257920
   },
   "weightsGbBf16": {
    "before": 0.709,
    "after": 0.709
   },
   "trainPeakGb": {
    "before": 20.564,
    "after": 20.618
   },
   "fingerprint": null,
   "context": {
    "before": 512,
    "after": 514
   },
   "eos": null,
   "bos": null
  },
  "commit_date": "2019-09-26T17:03:17.000Z",
  "detected_at": "2026-10-18T09:00:52.565Z",
  "detected_by": "backfill",
  "days_since_first_commit": 52,
  "license": "CC-BY-4.0"
 }
}