Pith Number

pith:IBYWDFBW

pith:2019:IBYWDFBWOY6WUHPF6J54PNYHZW

not attested not anchored not stored refs pending

Semi-supervised Learning with Contrastive Predicative Coding

Jian Cheng, Jiaxing Wang, Junzhou Huang, Xiaoshuang Chen, Yin Zheng

arxiv:1905.10514 v1 · 2019-05-25 · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IBYWDFBWOY6WUHPF6J54PNYHZW}

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	2026-05-17T23:45:08.247057Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4071619436763d6a1de5f27bc7b707cda1170d322dde40df4e9161c6e9a08e82

Aliases

arxiv: 1905.10514 · arxiv_version: 1905.10514v1 · doi: 10.48550/arxiv.1905.10514 · pith_short_12: IBYWDFBWOY6W · pith_short_16: IBYWDFBWOY6WUHPF · pith_short_8: IBYWDFBW

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/IBYWDFBWOY6WUHPF6J54PNYHZW \
  | 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: 4071619436763d6a1de5f27bc7b707cda1170d322dde40df4e9161c6e9a08e82

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0364f3cb1b7e59424d8dd731fb6919c0bff9b408d5d009e8d4ac0d93f4978855",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-05-25T03:53:13Z",
    "title_canon_sha256": "80fdc54be94bdc0931cc6c45ad2be66415da52f4c80a056b19be348d8281336b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.10514",
    "kind": "arxiv",
    "version": 1
  }
}