Pith Number

pith:NIE5KHLB

pith:2019:NIE5KHLBOKUV45UL3NURFWW54Q

not attested not anchored not stored refs pending

An unsupervised transfer learning algorithm for sleep monitoring

Alfred O. Hero, Christopher W. Woods, Geoffrey S. Ginsburg, Peter X.K. Song, Ricardo Henao, Xichen She, Yaya Zhai

arxiv:1904.03720 v1 · 2019-04-07 · stat.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NIE5KHLBOKUV45UL3NURFWW54Q}

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	2026-05-17T23:49:08.334085Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a09d51d6172a95e768bdb6912dadde4314631ec859a8d79eee81cd53b75712a

Aliases

arxiv: 1904.03720 · arxiv_version: 1904.03720v1 · doi: 10.48550/arxiv.1904.03720 · pith_short_12: NIE5KHLBOKUV · pith_short_16: NIE5KHLBOKUV45UL · pith_short_8: NIE5KHLB

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/NIE5KHLBOKUV45UL3NURFWW54Q \
  | 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: 6a09d51d6172a95e768bdb6912dadde4314631ec859a8d79eee81cd53b75712a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9c7707da047ca6d721a25fff985dcc9601dd9fd5bfd27870ab2708ca278cf86",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2019-04-07T19:42:20Z",
    "title_canon_sha256": "e7dc38f6c93dbdccdc0e869a03b7cded600bfad2fa029bf6a529dc5f729b1070"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.03720",
    "kind": "arxiv",
    "version": 1
  }
}