Pith Number

pith:C2GGTFJH

pith:2015:C2GGTFJHB3JKM2PJWJHBWTYKDY

not attested not anchored not stored refs pending

Metadata Embeddings for User and Item Cold-start Recommendations

Maciej Kula (Lyst.com)

arxiv:1507.08439 v1 · 2015-07-30 · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{C2GGTFJHB3JKM2PJWJHBWTYKDY}

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.

Cited by

1 paper in Pith

Embedding models for recommendation under contextual constraints

Receipt and verification

First computed	2026-05-18T01:36:06.457671Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

168c6995270ed2a669e9b24e1b4f0a1e03268c719ce33bc5cda682c48303f3b7

Aliases

arxiv: 1507.08439 · arxiv_version: 1507.08439v1 · doi: 10.48550/arxiv.1507.08439 · pith_short_12: C2GGTFJHB3JK · pith_short_16: C2GGTFJHB3JKM2PJ · pith_short_8: C2GGTFJH

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/C2GGTFJHB3JKM2PJWJHBWTYKDY \
  | 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: 168c6995270ed2a669e9b24e1b4f0a1e03268c719ce33bc5cda682c48303f3b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3996a479e8b02dd3f6f5f30447efa6be232abdd55796dc492bb54d00662a4cb6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2015-07-30T10:08:14Z",
    "title_canon_sha256": "bb8751ef5ce7d1f6eab02b02cfaa847f6536a1c93584198b3b4633be628df922"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.08439",
    "kind": "arxiv",
    "version": 1
  }
}