Pith Number

pith:L6F6HUO7

pith:2018:L6F6HUO7UTBIZYZJSQUOZDRPP6

not attested not anchored not stored refs pending

cf2vec: Collaborative Filtering algorithm selection using graph distributed representations

Andr\'e C.P.L.F. de Carvalho, Carlos Soares, Tiago Cunha

arxiv:1809.06120 v1 · 2018-09-17 · 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{L6F6HUO7UTBIZYZJSQUOZDRPP6}

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	2026-05-18T00:05:35.590373Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f8be3d1dfa4c28ce3299428ec8e2f7f9070677dd6b2f30d2a593b7a9cc47932

Aliases

arxiv: 1809.06120 · arxiv_version: 1809.06120v1 · doi: 10.48550/arxiv.1809.06120 · pith_short_12: L6F6HUO7UTBI · pith_short_16: L6F6HUO7UTBIZYZJ · pith_short_8: L6F6HUO7

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/L6F6HUO7UTBIZYZJSQUOZDRPP6 \
  | 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: 5f8be3d1dfa4c28ce3299428ec8e2f7f9070677dd6b2f30d2a593b7a9cc47932

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "300554da1ce1d4d567db3e55b0d61757a8ce083097d2f1523761b7b5c0aedf39",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2018-09-17T10:36:16Z",
    "title_canon_sha256": "e7702edcd9154424731c24202c448ef4669227d0ca0a6f756cff990272710769"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.06120",
    "kind": "arxiv",
    "version": 1
  }
}