Pith Number

pith:6DI3CYUB

pith:2017:6DI3CYUBNSGO2U75SPOFP6LSCE

not attested not anchored not stored refs pending

Embedded Collaborative Filtering for "Cold Start" Prediction

Ali Nadaf, Yubo Zhou

arxiv:1704.02552 v1 · 2017-04-09 · 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{6DI3CYUBNSGO2U75SPOFP6LSCE}

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	2026-05-18T00:46:45.137076Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f0d1b162816c8ced53fd93dc57f97211362bb75a3f353af4297025d30ea4fbd6

Aliases

arxiv: 1704.02552 · arxiv_version: 1704.02552v1 · doi: 10.48550/arxiv.1704.02552 · pith_short_12: 6DI3CYUBNSGO · pith_short_16: 6DI3CYUBNSGO2U75 · pith_short_8: 6DI3CYUB

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/6DI3CYUBNSGO2U75SPOFP6LSCE \
  | 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: f0d1b162816c8ced53fd93dc57f97211362bb75a3f353af4297025d30ea4fbd6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d9af8b9d3140cee27a532536834ee081de6d50778ab04e400fde1d6b8ebfcb92",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2017-04-09T01:24:32Z",
    "title_canon_sha256": "c06394d5cd9da332fafa6b2121c142fdfe255bf3b51a0496ae1e6a0acca66fc2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.02552",
    "kind": "arxiv",
    "version": 1
  }
}