Pith Number

pith:UJ5MEGR6

pith:2019:UJ5MEGR6WFVWIQ7ISOAMXYWGSG

not attested not anchored not stored refs pending

Understanding the Behaviour of the Empirical Cross-Entropy Beyond the Training Distribution

Leonardo Rey Vega, Matias Vera, Pablo Piantanida

arxiv:1905.11972 v1 · 2019-05-28 · stat.ML · cs.IT · cs.LG · math.IT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UJ5MEGR6WFVWIQ7ISOAMXYWGSG}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-17T23:44:49.795843Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a27ac21a3eb16b6443e89380cbe2c6918f6c3b59c7fd2d68bd9f9f73101e81da

Aliases

arxiv: 1905.11972 · arxiv_version: 1905.11972v1 · doi: 10.48550/arxiv.1905.11972 · pith_short_12: UJ5MEGR6WFVW · pith_short_16: UJ5MEGR6WFVWIQ7I · pith_short_8: UJ5MEGR6

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/UJ5MEGR6WFVWIQ7ISOAMXYWGSG \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: a27ac21a3eb16b6443e89380cbe2c6918f6c3b59c7fd2d68bd9f9f73101e81da

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "388aa333c74047e3439f854ce0b0729fcac6f603b77bedac9821efca99dc02f6",
    "cross_cats_sorted": [
      "cs.IT",
      "cs.LG",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2019-05-28T17:48:48Z",
    "title_canon_sha256": "877daba1639c473e73bfbdbb320ce1c387ddae4b063c2ff01e60896a9ec066e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.11972",
    "kind": "arxiv",
    "version": 1
  }
}